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Isolated Auxiliary Power Supply 20-75W

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In the 20 to 75W power range, the need to meet increasingly tight efficiency and stand-by requirements for auxiliary power supplies has pushed the use of quasi-resonant topologies replacing more mainstream fly-back based designs.

We offer a range of power MOSFETs, diodes as well as primary PWM controllers together with an extensive range of hardware and software evaluation and development tools including reference designs to help design high-efficiency auxiliary switch mode power supplies (SMPS). 

isolated auxiliary smps 24v block diagram
Part Number
Description
EVL6566B-40WSTB 40 W wide input range flyback converter using L6566BH Multimode controller for SMPS Quick view

Key Features

  • Input voltage: Vin: 90 - 264 Vrms, f: 45-66 Hz
  • Output voltages:
    • 1.8 V/1.73 A, dedicated to digital circuitry and to 1.2 V local post regulators
    • 3.3 V/0.5 A, dedicated to analog peripherals and 2.5 V regulators
    • 5 V/2.4 A, dedicated to HDD/DVD and 5 V circuitry
    • 12V/ 1.9Avg÷2.9Apk, dedicated to HDD/DVD, SCART and LNBP21 for satellite stb. Average load is 1.9 A, 2.9 A is dedicated to HDD/DVD spin-up
  • Standby: better then 800 mW @ 230 Vin and 50 mA load
  • No-load: better then 250 mW @ 230 Vin
  • Short circuit protection: on all outputs, with auto-restart at short removal
  • PCB type and size: Single side 70 μm (2-Oz), CEM-1, 150 x 75 mm
  • Safety: Acc. to EN60065, creep age and clearance minimum distance 6.4 mm
  • EMI: Acc. to with EN50022-Class B

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Product Details Download databrief
EVL6566B-65W-QR 19 V - 65 W quasi resonant flyback adapter board Quick view

Key Features

  • Universal input mains range: 90 264 Vac - frequency 45 ÷ 65Hz
  • Output voltage: 19 V @ 3.42 A continuous operation
  • Mains harmonics: according to EN61000-3-2 Class-D or JEITA-MITI Class-D
  • Stand-by mains consumption: <100 mW @ 230 Vac
  • Average efficiency: better than 89% without synchronous rectification
  • EMI: according to EN55022-Class-B
  • Safety: according to EN60950
  • Dimensions: 58x121 mm, 25 mm components maximum height
  • PCB: single side, 35 μm, CEM-1, mixed PTH/SMT

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Product Details Download databrief

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FEATURED RESOURCES

Schematics BOM Gerber
Part Number
EVL6566B-40WSTB

40 W wide input range flyback converter using L6566BH Multimode controller for SMPS

Quick view

Key Features

  • Input voltage: Vin: 90 - 264 Vrms, f: 45-66 Hz
  • Output voltages:
    • 1.8 V/1.73 A, dedicated to digital circuitry and to 1.2 V local post regulators
    • 3.3 V/0.5 A, dedicated to analog peripherals and 2.5 V regulators
    • 5 V/2.4 A, dedicated to HDD/DVD and 5 V circuitry
    • 12V/ 1.9Avg÷2.9Apk, dedicated to HDD/DVD, SCART and LNBP21 for satellite stb. Average load is 1.9 A, 2.9 A is dedicated to HDD/DVD spin-up
  • Standby: better then 800 mW @ 230 Vin and 50 mA load
  • No-load: better then 250 mW @ 230 Vin
  • Short circuit protection: on all outputs, with auto-restart at short removal
  • PCB type and size: Single side 70 μm (2-Oz), CEM-1, 150 x 75 mm
  • Safety: Acc. to EN60065, creep age and clearance minimum distance 6.4 mm
  • EMI: Acc. to with EN50022-Class B

Show More

Product Details Download databrief
EVL6566B-65W-QR

19 V - 65 W quasi resonant flyback adapter board

Quick view

Key Features

  • Universal input mains range: 90 264 Vac - frequency 45 ÷ 65Hz
  • Output voltage: 19 V @ 3.42 A continuous operation
  • Mains harmonics: according to EN61000-3-2 Class-D or JEITA-MITI Class-D
  • Stand-by mains consumption: <100 mW @ 230 Vac
  • Average efficiency: better than 89% without synchronous rectification
  • EMI: according to EN55022-Class-B
  • Safety: according to EN60950
  • Dimensions: 58x121 mm, 25 mm components maximum height
  • PCB: single side, 35 μm, CEM-1, mixed PTH/SMT

Show More

Product Details Download databrief

IMAGE

Image
Image

FEATURED RESOURCES

Schematics BOM Gerber
00 Files selected for download

Technical Documentation

    • Description Version Size Action
      		AN3089
      19 V - 65 W quasi-resonant flyback adapter using L6566B and TSM1014       		2.0
      644.02 KB
      		PDF
      		AN1768
      ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES       		1.1
      46.82 KB
      		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
      		AN4381
      Current sharing in parallel diodes       		1.0
      449.12 KB
      		PDF
      		AN4604
      Evaluation board for the SEA01 constant voltage and current controller with online digital trimming       		1.0
      430.54 KB
      		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
      		AN533
      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting       		3.6
      217.19 KB
      		PDF
      		AN443
      SERIES OPERATION ON FAST RECTIFIERS       		2.1
      202.48 KB
      		PDF
      		AN1542
      THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION       		1.1
      57.47 KB
      		PDF
      		AN869
      Tj max limit of Schottky diodes       		2.2
      60.9 KB
      		PDF
      AN3089

      19 V - 65 W quasi-resonant flyback adapter using L6566B and TSM1014

      PDF
      AN1768

      ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES

      PDF
      AN2025

      CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION

      PDF
      AN604

      Calculation of conduction losses in a power rectifier

      PDF
      AN4021

      Calculation of reverse losses in a power diode

      PDF
      AN4381

      Current sharing in parallel diodes

      PDF
      AN4604

      Evaluation board for the SEA01 constant voltage and current controller with online digital trimming

      PDF
      AN1453

      NEW FAMILY OF 150V POWER SCHOTTKY

      PDF
      AN5046

      Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages

      PDF
      AN5088

      Rectifiers thermal management, handling and mounting recommendations

      PDF
      AN533

      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting

      PDF
      AN443

      SERIES OPERATION ON FAST RECTIFIERS

      PDF
      AN1542

      THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION

      PDF
      AN869

      Tj max limit of Schottky diodes

      PDF

Presentations & Training Material

    • Description Version Size Action
      		Primary side regulation controllers portfolio
      1.1 MB
      		PDF

      Primary side regulation controllers portfolio

      PDF

Publications and Collaterals

    • Description Version Size Action
      		800-1050V MDmesh™ K5 ST’s first super-junction VHV MOSFET Series 1.0
      516.44 KB
      		PDF
      		800-1700 V MDmesh K5: Very high voltage super-junction Power MOSFET series 1.0
      477.67 KB
      		PDF
      		SOD128Flat power Schottky diodes for improved cost and space-savings 1.0
      2.18 MB
      		PDF

      800-1050V MDmesh™ K5 ST’s first super-junction VHV MOSFET Series

      PDF

      800-1700 V MDmesh K5: Very high voltage super-junction Power MOSFET series

      PDF

      SOD128Flat power Schottky diodes for improved cost and space-savings

      PDF

Development Tools

    • Part Number
      ST-DIODE-FINDER

      Diode product finder application for Android and iOS

      ST-VREG-FINDER

      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.

Power Management

Part number Description
HVLED001A Offline controller for LED lighting with constant voltage primary-sensing and high power factor
L6565 Quasi-resonant Controller
L6566BH Multi-mode controller for SMPS
Part number
HVLED001A
Offline controller for LED lighting with constant voltage primary-sensing and high power factor
L6565
Quasi-resonant Controller
L6566BH
Multi-mode controller for SMPS