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Power monitoring is a critical function to enable the highest efficiency in data and networking centers. By combining and analyzing environmental data and power metering data, installation managers can adapt data center cooling systems to ensure that all the machines are always running at the optimal temperature for highest efficiency. Ensuring servers are running at the correct temperature also increases their lifespan while lowering the power they consume and the heat that they generate.

ST’s product portfolio brings added value to system power monitoring applications. We provide key components for power management units, such as power metering ICs, a broad range of microcontrollers, and environmental sensors, as well as power management components for the whole system.

Part Number
Description
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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FEATURED RESOURCES

Schematics BOM Gerber
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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FEATURED RESOURCES

Schematics BOM Gerber
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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FEATURED RESOURCES

Schematics BOM Gerber
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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FEATURED RESOURCES

Schematics BOM Gerber
EVALSTPM32 Single-phase energy metering evaluation board with shunt current sensor based on the STPM32 Quick view

Key Features

  • 0.2% accuracy single-phase meter
  • Vnom (RMS) = 140 to 300 V, Inom /Imax(RMS) = 5/100 A, flin = 50/60 Hz ± 10%
  • Connector for USB isolated hardware programmer tool STEVAL-IPE023V1 and PC GUI
  • RS232 and UART isolated connectors to PC GUI
  • SPI/UART switch for device peripheral selection
  • 2 programmable LEDs on board
  • Digital expansion to external system-on-chip or MCU
  • 3.3 V power supply: external or through STEVAL-IPE023V1 isolated USB board
  • IEC61000 standard compliant
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
Part Number
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

Show More

IMAGE

Image
Image

FEATURED RESOURCES

Schematics BOM Gerber
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

Show More

IMAGE

Image
Image

FEATURED RESOURCES

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

Show More

IMAGE

Image
Image

FEATURED RESOURCES

Schematics BOM Gerber
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

Show More

IMAGE

Image
Image

FEATURED RESOURCES

Schematics BOM Gerber
EVALSTPM32

Single-phase energy metering evaluation board with shunt current sensor based on the STPM32

Key Features

  • 0.2% accuracy single-phase meter
  • Vnom (RMS) = 140 to 300 V, Inom /Imax(RMS) = 5/100 A, flin = 50/60 Hz ± 10%
  • Connector for USB isolated hardware programmer tool STEVAL-IPE023V1 and PC GUI
  • RS232 and UART isolated connectors to PC GUI
  • SPI/UART switch for device peripheral selection
  • 2 programmable LEDs on board
  • Digital expansion to external system-on-chip or MCU
  • 3.3 V power supply: external or through STEVAL-IPE023V1 isolated USB board
  • IEC61000 standard compliant
  • RoHS compliant

Show More

IMAGE

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FEATURED RESOURCES

Schematics BOM Gerber
00 Files selected for download

Technical Documentation

    • Description Version Size Action
      AN4470
      The STPM3x and the STCOMET application calibration
      3.0
      757.12 KB
      PDF
      AN4470

      The STPM3x and the STCOMET application calibration

    • Description Version Size Action
      DT0039
      Improving measuring accuracy and EFT immunity for STPM3x applications
      1.0
      1.87 MB
      PDF
      DT0039

      Improving measuring accuracy and EFT immunity for STPM3x applications

Publications and Collaterals

    • Description Version Size Action
      STPM32, STPM33, STPM34 - Taking care of every milliwatt 10.2016
      1.58 MB
      PDF

      STPM32, STPM33, STPM34 - Taking care of every milliwatt

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • 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
      VIPerPlus evaluation boards 05.2018
      1,002.52 KB
      PDF

      Brochure Power management guide

      VIPerPlus - Your SMPS design deserves a Plus

      VIPerPlus evaluation boards