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In the power range up to 20W, high-power-density and cost-effective isolated auxiliary power supplies can be designed using single-transistor fly-back, forward or quasi-resonant topologies working at relatively high switching frequencies to minimize transformer and output capacitor size.

We offer a range of integrated – actually a power MOSFET, PWM controller and protection circuit in a single package – high-voltage converters providing extremely low stand-by power, high – 800 and 900V – breakdown voltages and a range of protection features to help maximize efficiency and enhance reliability of power supplies.

In addition, we provide a comprehensive set of hardware and software evaluation and development tools as well as reference designs to enable a fast time to market.

Part Number
Description
STEVAL-ISA110V1 12 V/12 W wide range non-isolated flyback based on the VIPER26LN Quick view

Key Features

  • Universal input mains range:
    • input voltage 90 - 264 VAC
    • frequency 45 - 65 Hz
  • Single output voltage: 12 V @ 1 A continuous operation
  • Standby mains consumption: < 30 mW @ 265 VAC
  • Average efficiency: > 85%
  • Fully protected against faults (overload, feedback disconnection and overheating)
  • EMI: according to EN55022-Class-B

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STEVAL-ISA175V1 9.4 W, 15 V-5 V-3.3 V, three output isolated flyback converter for smart meter and power line systems using the VIPER26HD Quick view

Key Features

  • Triple output voltage: 15 V @ 0.55 Arms (0.7 A peak), 3.3 V @ 200 mA and 5 V @ 100 mA
  • Extended AC mains input voltage range: 90 VAC to 440 VAC
  • Meets STCOMET smart meter and power line communication system specs
  • EMC with EN55022, EN61000, EN61000-4-4, EN61000-4-5, EN61000-4-6
  • RoHS compliant

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STEVAL-ISA184V1 5V/1.2A 12V/750mA double output flyback converter using VIPER37LD Quick view

Key Features

  • Universal input mains range: 85 – 265 VAC ; frequency: 50 – 60 Hz
  • Output voltage 1: 5 V / 1.2 A
  • Output voltage 2: 12 V / 0.75 A
  • Very compact size
  • Standby mains consumption: < 40 mW at 230 VAC
  • Average efficiency: > 75%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA140V1 15W, 12V output, isolated flyback converter using VIPer™ Plus - VIPER37HE Quick view

Key Features

  • AC Main Input voltage range: 100 VAC to 265 VAC
  • Mains frequency (fL ): 50 Hz / 60 Hz
  • Output voltage typ: 12 V
  • Output current: 1.25 A
  • Output ripple voltage: 50 mV
  • Rated output power: 15 W
  • Input power in standby @230 VAC : 50 mW
  • Active mode efficiency: 78%
  • Ambient operating temperature: 60 °C
  • RoHS compliant

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STEVAL-ISA162V1 12 V/10 W isolated flyback converter based on VIPer25HD Quick view

Key Features

  • Universal input mains range: 90 – 265 VAC , frequency: 50 – 60 Hz
  • Output voltage: 12 V/0.84 A
  • Very compact size
  • Quasi resonant operation
  • Standby mains consumption: < 35 mW at 230 VAC
  • Average efficiency: > 82% (compliant with CoC version 5, Tier 2)
  • EMI: in accordance with EN55022-Class-B

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STEVAL-ISA196V1 5 V / 1.2 A non-isolated flyback converter using VIPerPlus?VIPer114LS Quick view

Key Features

  • Universal AC main input voltage range: 85VAC to 265VAC
  • Output voltage: 5 V
  • Output current: 1.2 A
  • Rated output power: 6 W
  • No load input power @230 VAC : < 10 mW
  • Active mode efficiency: > 78%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA122V1 Wide input-range, single-output 5 V / 11 W power supply demonstration board based on the VIPer27 Quick view

Key Features

  • Wide input voltage range (VIN ): 90 to 265 Vrms
  • Nameplate output voltage (Vout ): 5 V
  • Max output current IOUT : 2.2 A
  • Precision of output regulation: ±5%
  • High frequency output voltage ripple (ΔVout_HF ): 50 mV
  • Max ambient operating temperature (TA ): 60 °C
  • RoHS compliant

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STEVAL-ISA135V1 4 W, 12 V output, isolated flyback converter using VIPer™ Plus - VIPER06HS Quick view

Key Features

  • AC main input voltage: VIN 85 VAC - 265 VAC
  • Main frequency: fL 50 Hz - 60 Hz
  • Output voltage: VOUT 12 V
  • Max output current: IOUT 333 mA
  • Precision of output regulation: ΔVOUT_LF ±5 %
  • High frequency output voltage ripple: ΔVOUT_HF 50 mV
  • Min active mode efficiency: ηAV 71 %
  • Max ambient operating temperature: TAMB 60 ºC
  • Thermal shutdown with hysteresis
  • Delayed overload protection
  • Open loop failure protection (if auxiliary winding is used)
  • RoHS compliant

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STEVAL-ISA171V1 12 V - 15 W quasi resonant flyback converter based on the VIPER35HD Quick view

Key Features

  • Wide input voltage range: 90 VAC to 264 VAC
  • Output voltage: 12 V
  • Output current: 1.25 A
  • Rated output power: 15 W
  • Quasi resonant operation
  • Input power standby @ 230 VAC : < 30 mW
  • Active mode efficiency: > 82%
  • EMI: pre-compliance with EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA197V1 12 V, 7.8 W isolated flyback converter based on VIPer114LS Quick view

Key Features

  • Universal input mains range: 90 – 265VAC , frequency: 50 – 60 Hz
  • Output voltage: 12 V
  • Output current: 0.65 A
  • Very compact size
  • Stand-by mains consumption: < 20 mW at 230VAC
  • Average efficiency: > 81%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA182V1 8.4 W / 30 W peak power offline flyback converter using VIPER38HD Quick view

Key Features

  • US input range: 85 – 132 VAC , frequency: 50 – 60 Hz
  • Output voltage / current: 12 V / 0.7 A (2.5 A peak)
  • Very compact size
  • Standby mains consumption: lower than 25 mW at 115 VAC
  • Min. active mode efficiency: 81.14%
  • Min. active mode at 10% load efficiency: 71.14%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA081V1 12 V /1 A SMPS wide range demonstration board based on the VIPER26 Quick view

Key Features

  • Vin: 85 ~ 305 Vrms / f: 45 ~ 66 Hz
  • Vout1 : 12 VDC ± 10 %, 1 A (at 3.3 V not loaded)
  • Vout2 : 3.3 VDC ± 4 %, 100 mA
  • Maximum total output current: 1 A
  • Standby < 120 mW at 230 VAC
  • Short-circuit: protected
  • PCB type and size: FR4, single-side 35 μm, 32 x 90 mm
  • Isolation: isolated 4 kV / 8 mm
  • EMI: according to EN55022 Class
  • RoHS compliant

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STEVAL-ISA125V1 5 V/10 W, 60 kHz isolated flyback with extra power management based on the VIPer28L Quick view

Key Features

  • Input voltage range: 90 VRMS - 265 VRMS
  • Output voltage: 5 V
  • Max output current: IOUT max = 2 A
  • Peak output current: IOUT pk = 3 A
  • Precision of output regulation: ΔVOUT_LF ±5%
  • High frequency output voltage ripple: ΔVOUT_HF = 50 mV
  • Max ambient operating temperature: TA = 60 ºC
  • 800 V avalanche-rugged power section
  • PWM operation at 60 kHz with frequency jittering for lower EMI
  • Limiting current with adjustable set point
  • On-board soft-start
  • Safe auto-restart after a fault condition; low standby power (< 50 mW at 265 Vac ).
  • Adjustable, accurate overvoltage protection, thermal shutdown with hysteresis, delayed overload protection

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STEVAL-ISA103V1 Wide range (90 V - 265 V) input, 5 V - 12 W output demonstration board with improved standby performance based on VIPER27LN Quick view

Key Features

  • Vin: 90 V - 265 V
  • Vout: 5 V
  • Pout: 12 W
  • Very low standby consumption
  • Overload protection
  • Secondary winding short-circuit protection
  • Output overvoltage protection
  • Brownout protection
  • ENERGY STAR® compliant
  • RoHS compliant

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STEVAL-ISA183V1 16 W triple output quasi resonant flyback converter for air conditioning applications using VIPer35LD Quick view

Key Features

  • AC main input voltage range : 175 VAC to 275 VAC
  • Triple output voltages: 12 V - 1 A (isolated), 15 V - 200 mA (non-isolated), 5 V - 200 mA (non-isolated), continuous operation
  • High performance at low load conditions: < 50 mW at no-load condition and < 1.5 W input power at minimum operative output power (0.91 W)
  • Efficiency at full load: > 81%
  • EMI: According to EN55022-Class-B, using low cost input filter
  • RoHS compliant

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STEVAL-ISA180V1 12 V - 0.6 A flyback isolated converter using VIPer™ Plus - VIPer0P Quick view

Key Features

  • Universal AC main input voltage range: 85 to 265 VAC
  • Output range: 12 V - 0.6 A
  • Rated output power: 7.2 W
  • Input power in standby @ 230 VAC : less than 18 mW
  • Active mode efficiency: > 80%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA117V1 Wide range isolated flyback demonstration board, single output 12 V/4.2 W based on the VIPer16LN Quick view

Key Features

  • Universal input mains range:
    • input voltage 90 - 264 VAC
    • frequency 45 - 65 Hz
  • Single output voltage: 12 V at 0.35 A continuous operation
  • Stand-by mains consumption: < 30 mW at 230 VAC
  • Average efficiency: > 75 %
  • Fully protected against faults (overload, feedback disconnection and overheating)
  • EMI: according to EN55022-Class-B

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STEVAL-ISA062V1 6 W dual output SMPS demonstration board based on the VIPER17 Quick view

Key Features

  • Efficiency: 80% typical at 12 V output
  • Line regulation: +/- 0.2%
  • EMI: EN55022 class \"B\"
  • Safety: overvoltage, overcurrent, brown out
  • Load and cross regulation #2: +/-10%
  • Load and cross regulation #1: +/-1%
  • Input voltage range: 85 Vac to 264 Vac
  • Temperature range from: 0° to 85 °C 105°C possible
  • Input frequency: 47 Hz to 63 Hz
  • Output voltage and current # 2: 12 V @ 0.25 A
  • Output power: 5.5 W
  • Output voltage and current # 1: 5 V @ 0.5 A

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STEVAL-ISA134V1 12 V - 4 W, 115 kHz isolated flyback based on the VIPer06 Quick view

Key Features

  • AC main input voltage VIN : 85 VAC - 265 VAC
  • Main frequency fL : 50 Hz; 60 Hz
  • Output voltage VOUT : 12 V
  • Max output current IOUT : 333 mA
  • Precision of output regulation ΔVOUT_LF : ± 5%
  • High frequency output voltage ripple: ΔVOUT_HF 50 mV
  • Min active mode efficiency ηAV = 71%
  • Max ambient operating temperature: TAMB = 60 °C

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STEVAL-ISA121V1 Wide range single-output demonstration board based on the VIPER37LE Quick view

Key Features

  • Universal input mains range:
    • input voltage 90 - 264 VAC
    • frequency 45 - 65 Hz
  • Single-output voltage: 5 V @ 3 A continuous operation
  • Standby mains consumption:< 30 mW @ 230 VAC
  • Average efficiency: > 75%
  • Complies with EuP Lot 6 requirements
  • Fully protected against faults overload, overvoltage, transformer saturation and overheating
  • Compliant with EMC norm EN55022-Class-B
  • RoHS compilant

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STEVAL-ISA191V1 5 V - 12 V, 15 W double output isolated flyback converter based on VIPer37LE Quick view

Key Features

  • Universal input mains range: 85 – 265 VAC frequency: 50 – 60 Hz
  • Output voltage1: 5 V / 1.2 A
  • Output voltage2: 12 V / 0.75 A
  • Very compact size
  • Stand-by mains consumption: < 40 mW at 230 VAC
  • Average efficiency: > 75%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA136V1 3W, 5V output, isolated flyback converter using VIPer™ Plus - VIPER06HN Quick view

Key Features

  • Universal input mains range: 85 - 265 VAC frequency: 50 - 60 Hz
  • Output voltage: 5 V / 0.6 A
  • Very compact size
  • Stand-by mains consumption: < 30 mW at 230 VAC
  • Min active mode efficiency ηAV =66.89%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA153V1 12 V, 15 W (20 W peak) isolated flyback converter based on the VIPER38LE Quick view

Key Features

  • Universal input mains range: 90 – 265 VAC frequency: 50 - 60 Hz
  • Output voltage/current: 12 V/1.25 A (1.65 A peak)
  • Very compact size
  • Standby mains consumption: lower than 30 mW at 230 VAC
  • Minimum active mode efficiency: 81.55%
  • Minimum active mode at 10% load efficiency: 71.55%
  • EMI: in accordance with EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA126V1 5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN Quick view

Key Features

  • Input voltage range: 90 VRMS to 265 VRMS
  • Output voltage: 5 V
  • Max output current: IOUTmax 2 A
  • Peak output current: IOUTpk 3 A
  • Precision of output regulation: ΔVOUT_LF ±5%
  • High frequency output voltage ripple: ΔVOUT_HF 50 mV
  • Max ambient operating temperature: TA 60 ºC
  • 800 V avalanche rugged power section
  • PWM operation , at 115 kHz with frequency jittering for lower EMI
  • Limiting current with adjustable set point
  • On-board soft-start
  • Safe auto-restart after a fault condition, low standby power (< 50 mW at 265 Vac)
  • Adjustable and accurate over voltage protection, thermal shutdown with hysteresis, delayed overload protection
  • RoHS compliant

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Part Number
STEVAL-ISA110V1

12 V/12 W wide range non-isolated flyback based on the VIPER26LN

Key Features

  • Universal input mains range:
    • input voltage 90 - 264 VAC
    • frequency 45 - 65 Hz
  • Single output voltage: 12 V @ 1 A continuous operation
  • Standby mains consumption: < 30 mW @ 265 VAC
  • Average efficiency: > 85%
  • Fully protected against faults (overload, feedback disconnection and overheating)
  • EMI: according to EN55022-Class-B

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STEVAL-ISA175V1

9.4 W, 15 V-5 V-3.3 V, three output isolated flyback converter for smart meter and power line systems using the VIPER26HD

Key Features

  • Triple output voltage: 15 V @ 0.55 Arms (0.7 A peak), 3.3 V @ 200 mA and 5 V @ 100 mA
  • Extended AC mains input voltage range: 90 VAC to 440 VAC
  • Meets STCOMET smart meter and power line communication system specs
  • EMC with EN55022, EN61000, EN61000-4-4, EN61000-4-5, EN61000-4-6
  • RoHS compliant

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STEVAL-ISA184V1

5V/1.2A 12V/750mA double output flyback converter using VIPER37LD

Key Features

  • Universal input mains range: 85 – 265 VAC ; frequency: 50 – 60 Hz
  • Output voltage 1: 5 V / 1.2 A
  • Output voltage 2: 12 V / 0.75 A
  • Very compact size
  • Standby mains consumption: < 40 mW at 230 VAC
  • Average efficiency: > 75%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA140V1

15W, 12V output, isolated flyback converter using VIPer™ Plus - VIPER37HE

Key Features

  • AC Main Input voltage range: 100 VAC to 265 VAC
  • Mains frequency (fL ): 50 Hz / 60 Hz
  • Output voltage typ: 12 V
  • Output current: 1.25 A
  • Output ripple voltage: 50 mV
  • Rated output power: 15 W
  • Input power in standby @230 VAC : 50 mW
  • Active mode efficiency: 78%
  • Ambient operating temperature: 60 °C
  • RoHS compliant

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STEVAL-ISA162V1

12 V/10 W isolated flyback converter based on VIPer25HD

Key Features

  • Universal input mains range: 90 – 265 VAC , frequency: 50 – 60 Hz
  • Output voltage: 12 V/0.84 A
  • Very compact size
  • Quasi resonant operation
  • Standby mains consumption: < 35 mW at 230 VAC
  • Average efficiency: > 82% (compliant with CoC version 5, Tier 2)
  • EMI: in accordance with EN55022-Class-B

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STEVAL-ISA196V1

5 V / 1.2 A non-isolated flyback converter using VIPerPlus?VIPer114LS

Key Features

  • Universal AC main input voltage range: 85VAC to 265VAC
  • Output voltage: 5 V
  • Output current: 1.2 A
  • Rated output power: 6 W
  • No load input power @230 VAC : < 10 mW
  • Active mode efficiency: > 78%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA122V1

Wide input-range, single-output 5 V / 11 W power supply demonstration board based on the VIPer27

Key Features

  • Wide input voltage range (VIN ): 90 to 265 Vrms
  • Nameplate output voltage (Vout ): 5 V
  • Max output current IOUT : 2.2 A
  • Precision of output regulation: ±5%
  • High frequency output voltage ripple (ΔVout_HF ): 50 mV
  • Max ambient operating temperature (TA ): 60 °C
  • RoHS compliant

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STEVAL-ISA135V1

4 W, 12 V output, isolated flyback converter using VIPer™ Plus - VIPER06HS

Key Features

  • AC main input voltage: VIN 85 VAC - 265 VAC
  • Main frequency: fL 50 Hz - 60 Hz
  • Output voltage: VOUT 12 V
  • Max output current: IOUT 333 mA
  • Precision of output regulation: ΔVOUT_LF ±5 %
  • High frequency output voltage ripple: ΔVOUT_HF 50 mV
  • Min active mode efficiency: ηAV 71 %
  • Max ambient operating temperature: TAMB 60 ºC
  • Thermal shutdown with hysteresis
  • Delayed overload protection
  • Open loop failure protection (if auxiliary winding is used)
  • RoHS compliant

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STEVAL-ISA171V1

12 V - 15 W quasi resonant flyback converter based on the VIPER35HD

Key Features

  • Wide input voltage range: 90 VAC to 264 VAC
  • Output voltage: 12 V
  • Output current: 1.25 A
  • Rated output power: 15 W
  • Quasi resonant operation
  • Input power standby @ 230 VAC : < 30 mW
  • Active mode efficiency: > 82%
  • EMI: pre-compliance with EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA197V1

12 V, 7.8 W isolated flyback converter based on VIPer114LS

Key Features

  • Universal input mains range: 90 – 265VAC , frequency: 50 – 60 Hz
  • Output voltage: 12 V
  • Output current: 0.65 A
  • Very compact size
  • Stand-by mains consumption: < 20 mW at 230VAC
  • Average efficiency: > 81%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA182V1

8.4 W / 30 W peak power offline flyback converter using VIPER38HD

Key Features

  • US input range: 85 – 132 VAC , frequency: 50 – 60 Hz
  • Output voltage / current: 12 V / 0.7 A (2.5 A peak)
  • Very compact size
  • Standby mains consumption: lower than 25 mW at 115 VAC
  • Min. active mode efficiency: 81.14%
  • Min. active mode at 10% load efficiency: 71.14%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA081V1

12 V /1 A SMPS wide range demonstration board based on the VIPER26

Key Features

  • Vin: 85 ~ 305 Vrms / f: 45 ~ 66 Hz
  • Vout1 : 12 VDC ± 10 %, 1 A (at 3.3 V not loaded)
  • Vout2 : 3.3 VDC ± 4 %, 100 mA
  • Maximum total output current: 1 A
  • Standby < 120 mW at 230 VAC
  • Short-circuit: protected
  • PCB type and size: FR4, single-side 35 μm, 32 x 90 mm
  • Isolation: isolated 4 kV / 8 mm
  • EMI: according to EN55022 Class
  • RoHS compliant

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STEVAL-ISA125V1

5 V/10 W, 60 kHz isolated flyback with extra power management based on the VIPer28L

Key Features

  • Input voltage range: 90 VRMS - 265 VRMS
  • Output voltage: 5 V
  • Max output current: IOUT max = 2 A
  • Peak output current: IOUT pk = 3 A
  • Precision of output regulation: ΔVOUT_LF ±5%
  • High frequency output voltage ripple: ΔVOUT_HF = 50 mV
  • Max ambient operating temperature: TA = 60 ºC
  • 800 V avalanche-rugged power section
  • PWM operation at 60 kHz with frequency jittering for lower EMI
  • Limiting current with adjustable set point
  • On-board soft-start
  • Safe auto-restart after a fault condition; low standby power (< 50 mW at 265 Vac ).
  • Adjustable, accurate overvoltage protection, thermal shutdown with hysteresis, delayed overload protection

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STEVAL-ISA103V1

Wide range (90 V - 265 V) input, 5 V - 12 W output demonstration board with improved standby performance based on VIPER27LN

Key Features

  • Vin: 90 V - 265 V
  • Vout: 5 V
  • Pout: 12 W
  • Very low standby consumption
  • Overload protection
  • Secondary winding short-circuit protection
  • Output overvoltage protection
  • Brownout protection
  • ENERGY STAR® compliant
  • RoHS compliant

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STEVAL-ISA183V1

16 W triple output quasi resonant flyback converter for air conditioning applications using VIPer35LD

Key Features

  • AC main input voltage range : 175 VAC to 275 VAC
  • Triple output voltages: 12 V - 1 A (isolated), 15 V - 200 mA (non-isolated), 5 V - 200 mA (non-isolated), continuous operation
  • High performance at low load conditions: < 50 mW at no-load condition and < 1.5 W input power at minimum operative output power (0.91 W)
  • Efficiency at full load: > 81%
  • EMI: According to EN55022-Class-B, using low cost input filter
  • RoHS compliant

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STEVAL-ISA180V1

12 V - 0.6 A flyback isolated converter using VIPer™ Plus - VIPer0P

Key Features

  • Universal AC main input voltage range: 85 to 265 VAC
  • Output range: 12 V - 0.6 A
  • Rated output power: 7.2 W
  • Input power in standby @ 230 VAC : less than 18 mW
  • Active mode efficiency: > 80%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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STEVAL-ISA117V1

Wide range isolated flyback demonstration board, single output 12 V/4.2 W based on the VIPer16LN

Key Features

  • Universal input mains range:
    • input voltage 90 - 264 VAC
    • frequency 45 - 65 Hz
  • Single output voltage: 12 V at 0.35 A continuous operation
  • Stand-by mains consumption: < 30 mW at 230 VAC
  • Average efficiency: > 75 %
  • Fully protected against faults (overload, feedback disconnection and overheating)
  • EMI: according to EN55022-Class-B

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STEVAL-ISA062V1

6 W dual output SMPS demonstration board based on the VIPER17

Key Features

  • Efficiency: 80% typical at 12 V output
  • Line regulation: +/- 0.2%
  • EMI: EN55022 class \"B\"
  • Safety: overvoltage, overcurrent, brown out
  • Load and cross regulation #2: +/-10%
  • Load and cross regulation #1: +/-1%
  • Input voltage range: 85 Vac to 264 Vac
  • Temperature range from: 0° to 85 °C 105°C possible
  • Input frequency: 47 Hz to 63 Hz
  • Output voltage and current # 2: 12 V @ 0.25 A
  • Output power: 5.5 W
  • Output voltage and current # 1: 5 V @ 0.5 A

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Schematics BOM Gerber
STEVAL-ISA134V1

12 V - 4 W, 115 kHz isolated flyback based on the VIPer06

Key Features

  • AC main input voltage VIN : 85 VAC - 265 VAC
  • Main frequency fL : 50 Hz; 60 Hz
  • Output voltage VOUT : 12 V
  • Max output current IOUT : 333 mA
  • Precision of output regulation ΔVOUT_LF : ± 5%
  • High frequency output voltage ripple: ΔVOUT_HF 50 mV
  • Min active mode efficiency ηAV = 71%
  • Max ambient operating temperature: TAMB = 60 °C

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Schematics BOM Gerber
STEVAL-ISA121V1

Wide range single-output demonstration board based on the VIPER37LE

Key Features

  • Universal input mains range:
    • input voltage 90 - 264 VAC
    • frequency 45 - 65 Hz
  • Single-output voltage: 5 V @ 3 A continuous operation
  • Standby mains consumption:< 30 mW @ 230 VAC
  • Average efficiency: > 75%
  • Complies with EuP Lot 6 requirements
  • Fully protected against faults overload, overvoltage, transformer saturation and overheating
  • Compliant with EMC norm EN55022-Class-B
  • RoHS compilant

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Schematics BOM Gerber
STEVAL-ISA191V1

5 V - 12 V, 15 W double output isolated flyback converter based on VIPer37LE

Key Features

  • Universal input mains range: 85 – 265 VAC frequency: 50 – 60 Hz
  • Output voltage1: 5 V / 1.2 A
  • Output voltage2: 12 V / 0.75 A
  • Very compact size
  • Stand-by mains consumption: < 40 mW at 230 VAC
  • Average efficiency: > 75%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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Schematics BOM Gerber
STEVAL-ISA136V1

3W, 5V output, isolated flyback converter using VIPer™ Plus - VIPER06HN

Key Features

  • Universal input mains range: 85 - 265 VAC frequency: 50 - 60 Hz
  • Output voltage: 5 V / 0.6 A
  • Very compact size
  • Stand-by mains consumption: < 30 mW at 230 VAC
  • Min active mode efficiency ηAV =66.89%
  • EMI: according to EN55022-Class-B
  • RoHS compliant

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Schematics BOM Gerber
STEVAL-ISA153V1

12 V, 15 W (20 W peak) isolated flyback converter based on the VIPER38LE

Key Features

  • Universal input mains range: 90 – 265 VAC frequency: 50 - 60 Hz
  • Output voltage/current: 12 V/1.25 A (1.65 A peak)
  • Very compact size
  • Standby mains consumption: lower than 30 mW at 230 VAC
  • Minimum active mode efficiency: 81.55%
  • Minimum active mode at 10% load efficiency: 71.55%
  • EMI: in accordance with EN55022-Class-B
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA126V1

5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN

Key Features

  • Input voltage range: 90 VRMS to 265 VRMS
  • Output voltage: 5 V
  • Max output current: IOUTmax 2 A
  • Peak output current: IOUTpk 3 A
  • Precision of output regulation: ΔVOUT_LF ±5%
  • High frequency output voltage ripple: ΔVOUT_HF 50 mV
  • Max ambient operating temperature: TA 60 ºC
  • 800 V avalanche rugged power section
  • PWM operation , at 115 kHz with frequency jittering for lower EMI
  • Limiting current with adjustable set point
  • On-board soft-start
  • Safe auto-restart after a fault condition, low standby power (< 50 mW at 265 Vac)
  • Adjustable and accurate over voltage protection, thermal shutdown with hysteresis, delayed overload protection
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
00 Files selected for download

Technical Documentation

    • Description Version Size Action
      AN4685
      12 V, 10 W isolated flyback converter based on VIPer25HD
      1.0
      1.73 MB
      PDF
      AN4479
      12 V, 15 W peak 20 W isolated flyback converter based on VIPer38LE
      1.0
      1.08 MB
      PDF
      AN4940
      12 V, 7.2 W VIPer0P IR remote controlled flyback topology for air conditioning applications using VIPer0P
      1.0
      9.29 MB
      PDF
      AN4924
      12 V, 8.4 W peak power 30 W isolated flyback converter using VIPer38HD
      1.0
      2.94 MB
      PDF
      AN4812
      15 W, 12 V output, isolated flyback converter using Viper35HD device from the VIPer™ Plus family of high voltage converters
      1.0
      1.5 MB
      PDF
      AN4830
      15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D
      1.0
      3.13 MB
      PDF
      AN5030
      16 W, triple output, quasi-resonant flyback converter for air conditioning applications using VIPerPlus – VIPER35LD
      1.0
      2.06 MB
      PDF
      AN4410
      3 W, 5 V isolated flyback converter using the VIPer06HN, from the VIPer™ plus family
      2.0
      1.41 MB
      PDF
      AN4418
      3 W, 5 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family
      2.0
      1.38 MB
      PDF
      AN4404
      4 W, 12 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family
      2.0
      1.37 MB
      PDF
      AN2753
      6 W single-output VIPer17 demonstration board
      2.1
      1.39 MB
      PDF
      AN1768
      ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES
      1.1
      46.82 KB
      PDF
      AN4407
      Advantage of the use of an added driver source lead in discrete Power MOSFETs
      2.0
      5.42 MB
      PDF
      AN2025
      CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION
      1.1
      147.59 KB
      PDF
      AN604
      Calculation of conduction losses in a power rectifier
      3.2
      137.74 KB
      PDF
      AN4021
      Calculation of reverse losses in a power diode
      1.0
      120.47 KB
      PDF
      AN4209
      Design methodology for repetitive voltage suppressors (RVS) in repetitive mode: STRVS
      2.1
      647.88 KB
      PDF
      AN2840
      EVLVIP17-5WCHG: 5 W low standby consumption battery charger demonstration board based on the VIPER17HN
      1.1
      651.9 KB
      PDF
      AN2950
      EVLVIPER28L-10W: 5 V/10 W, 60 kHz isolated flyback with extra power management
      1.0
      1.76 MB
      PDF
      AN1453
      NEW FAMILY OF 150V POWER SCHOTTKY
      1.1
      131.48 KB
      PDF
      AN5046
      Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages
      4.0
      4.82 MB
      PDF
      AN5088
      Rectifiers thermal management, handling and mounting recommendations
      2.0
      2.32 MB
      PDF
      AN443
      SERIES OPERATION ON FAST RECTIFIERS
      2.1
      202.48 KB
      PDF
      AN2934
      STEVAL-ISA062V1: 6 W, wide-range dual and single output SMPS demonstration board based on the VIPer17
      1.0
      1.65 MB
      PDF
      AN4259
      STEVAL-ISA117V1 12 V / 4.2 W, 60 kHz flyback isolated with VIPer16LN
      3.0
      1.71 MB
      PDF
      AN4372
      STEVAL-ISA134V1: 12 V / 4 W, 115 kHz isolated flyback
      2.0
      1.33 MB
      PDF
      AN4878
      STEVAL-ISA175V1 three-output isolated flyback converter for smart meter and power line communication systems based on VIPER26HD
      1.0
      2.15 MB
      PDF
      AN4905
      STEVAL-ISA180V1 12 V/0.6 A isolated flyback demo with VIPer0P
      1.0
      2.55 MB
      PDF
      AN869
      Tj max limit of Schottky diodes
      2.2
      60.9 KB
      PDF
      AN4419
      VIPER37HE: 15 W wide range single output evaluation board
      1.0
      1.42 MB
      PDF
      AN2929
      Wide range [90 V - 265 V] input, 5 V - 12 W output VIPER27LN demonstration board with improved standby performance
      2.0
      1.44 MB
      PDF
      AN3011
      Wide range input (90 - 265), single output (5 V-11 W) EVLVIP27H-12SB, VIPer27 demonstration board
      1.1
      1.76 MB
      PDF
      AN4685

      12 V, 10 W isolated flyback converter based on VIPer25HD

      AN4479

      12 V, 15 W peak 20 W isolated flyback converter based on VIPer38LE

      AN4940

      12 V, 7.2 W VIPer0P IR remote controlled flyback topology for air conditioning applications using VIPer0P

      AN4924

      12 V, 8.4 W peak power 30 W isolated flyback converter using VIPer38HD

      AN4812

      15 W, 12 V output, isolated flyback converter using Viper35HD device from the VIPer™ Plus family of high voltage converters

      AN4830

      15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D

      AN5030

      16 W, triple output, quasi-resonant flyback converter for air conditioning applications using VIPerPlus – VIPER35LD

      AN4410

      3 W, 5 V isolated flyback converter using the VIPer06HN, from the VIPer™ plus family

      AN4418

      3 W, 5 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family

      AN4404

      4 W, 12 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family

      AN2753

      6 W single-output VIPer17 demonstration board

      AN1768

      ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES

      AN4407

      Advantage of the use of an added driver source lead in discrete Power MOSFETs

      AN2025

      CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION

      AN604

      Calculation of conduction losses in a power rectifier

      AN4021

      Calculation of reverse losses in a power diode

      AN4209

      Design methodology for repetitive voltage suppressors (RVS) in repetitive mode: STRVS

      AN2840

      EVLVIP17-5WCHG: 5 W low standby consumption battery charger demonstration board based on the VIPER17HN

      AN2950

      EVLVIPER28L-10W: 5 V/10 W, 60 kHz isolated flyback with extra power management

      AN1453

      NEW FAMILY OF 150V POWER SCHOTTKY

      AN5046

      Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages

      AN5088

      Rectifiers thermal management, handling and mounting recommendations

      AN443

      SERIES OPERATION ON FAST RECTIFIERS

      AN2934

      STEVAL-ISA062V1: 6 W, wide-range dual and single output SMPS demonstration board based on the VIPer17

      AN4259

      STEVAL-ISA117V1 12 V / 4.2 W, 60 kHz flyback isolated with VIPer16LN

      AN4372

      STEVAL-ISA134V1: 12 V / 4 W, 115 kHz isolated flyback

      AN4878

      STEVAL-ISA175V1 three-output isolated flyback converter for smart meter and power line communication systems based on VIPER26HD

      AN4905

      STEVAL-ISA180V1 12 V/0.6 A isolated flyback demo with VIPer0P

      AN869

      Tj max limit of Schottky diodes

      AN4419

      VIPER37HE: 15 W wide range single output evaluation board

      AN2929

      Wide range [90 V - 265 V] input, 5 V - 12 W output VIPER27LN demonstration board with improved standby performance

      AN3011

      Wide range input (90 - 265), single output (5 V-11 W) EVLVIP27H-12SB, VIPer27 demonstration board

Publications and Collaterals

    • Description Version Size Action
      Brochure Power management guide 10.2018
      4.42 MB
      PDF
      VIPerPlus - Your SMPS design deserves a Plus 05.2018
      1.08 MB
      PDF

      Brochure Power management guide

      VIPerPlus - Your SMPS design deserves a Plus

Development Tools

    • Part Number

      Diode product finder application for Android and iOS

      Linear and switching voltage regulators and voltage reference applications for smartphones and tablets

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.