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80 W ESBT quasi-resonant wide-range SMPS demonstration board based on the L6565 for 3-phase applications

The STEVAL-ISA019V3 demonstration board is a 3-phase auxiliary power supply with an 80 W dual output SMPS, using the L6565 PWM driver and the STC04IE170HP ESBT as the main switch. The combination of these ST parts provides a high-efficiency solution for high DC input voltage, a typical requirement of any 3-phase application.

The necessity to handle both high output power and wide input voltage is resolved using a flyback stage working in mixed operation mode: discontinuous and continuous.

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Data Brief

Key Features

  • 3-phase 80 W auxiliary output SMPS
  • Quasi-resonant SMPS
  • Input: 180 VACto 600 VAC
  • Output voltage: 24 V, 3.3 A
  • Maximum output power: 80 W
  • Efficiency > 80 %
  • Switching frequency > 50 kHz
  • Safety compliant according to EN60950
  • Feedback: secondary regulation
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1279: 80 W ESBT quasi-resonant wide-range SMPS demonstration board based on the L6565 for 3-phase applications
1.0 102 KB

Application Notes

Description Version Size
AN2495: 3-phase 80 W SMPS with very wide-range input voltage based on the L6565 and ESBT® STC04IE170HV
5.1 807 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for STEVAL-ISA019V3 board
1.0 44 KB

Bill of Materials

Description Version Size
2.1 11 KB

Schematic Pack

Description Version Size
Board schematics for STEVAL-ISA019V3 board
1.0 41 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA019V3NRNDL6565; STC04IE170HPBuy Direct120.05Distributor reported inventory date: 2015-08-03
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA10

(*) 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
(**) The Material Declaration forms available on 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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