1.5 W double output buck demonstration board based on the VIPER16LD

The STEVAL-ISA119V1 is a dual output buck demonstration board using the VIPER16LD, a new off-line high voltage converter by STMicroelectronics which has been specifically developed for non-isolated SMPS.

Output regulation is easily achieved through a voltage divider to the output voltage.

The VIPER16LD can work with or without an external supply. In the former case, very low standby consumption is possible(< 50 mW at 265 Vac) while in the latter case, the cost and complication of the IC supply network may be reduced.

The other features of the device include an 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 and safe auto-restart after a fault condition.

The available protection features are thermal shutdown with hysteresis and delayed overload protection.

Key Features

  • Input voltage range (VIN ): 90 VRMS to 265 VRMS
  • Output voltage 1 (VOUT1 )= 12 V
  • Max output current 1: (IOUT1 ) = 0.1 A
  • Output voltage 2: (VOUT2 ) = 5 V (through LDO)
  • Max output current 2: (IOUT2 )= 0.05 A
  • Precision of output regulation ΔVOUT_LF = ±5%
  • High frequency output voltage ripple ΔVOUT_HF = 50 mV
  • Max ambient operating temperature TA = 60 °C

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Design

Technical Documentation

Product Specifications
Description Version Size
DB1933 DB1933: 1.5 W double output buck demonstration board based on the VIPER16LD 1.0 167 KB
Application Notes
Description Version Size
AN4345 AN4345: STEVAL-ISA119V1: 1.5 W double output buck product evaluation board based on the VIPER16LD 1.0 2 MB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
STEVAL-ISA119V1 gerber files 1.0 311 KB
Bill of Materials
Description Version Size
STEVAL-ISA119V1 BOM 1.0 9 KB
Schematic Packs
Description Version Size
STEVAL-ISA119V1 schematics 1.0 54 KB

Legal

License Agreement
Description Version Size
Evaluation products license agreement 1.0 125 KB
Support & Community
Featured Products

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA119V1 VIPER16H Active 56.35 1 NEC EAR99 ITALY MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA119V1 ActiveCARDIndustrialEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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