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1次側および2次側レギュレーション、固定スイッチング周波数、擬似共振動作などのさまざまな実装では、一般的に数Wから100Wの出力電力に対応する絶縁型 / 非絶縁型フライバック･トポロジがオフライン・コンバータに採用されます。回路の動作は単一スイッチ・トポロジに基づき、入力から得られた電力はパワー･スイッチがオンの間にトランスの1次インダクタンスに蓄えられ、パワー·スイッチがオフの間に2次側出力に送られます。フライバック･トポロジでは、優れた信頼性に加えて高い効率や電力密度、低スタンバイ電力がきわめて重要な要件です。 Read more

Flyback Synch. Rect Controller

STripFET F7 series

Our products and solutions

In addition to a range of controllers, power MOSFETs and integrated high-voltage converters as well as diodes and protection devices, ST offers a full set of hardware and software development and evaluation tools to help design high-efficiency, flyback AC-DC converters.

Picture	Solution
	45Watt 12V Power Supply SL-STCH03-45W 量産中

45Watt 12V Power Supply

SL-STCH03-45W

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	Resource title		Latest update

アプリケーションノート (5 of 59)

Design Notes & Tips (2)

	Resource title		Latest update
PDF	DN0039 35 W wide input range flyback converter using HVLED001A quasi resonant Flyback controller and STF10LN80K5 1.1		13 Sep 2018	13 Sep 2018 DN0039 35 W wide input range flyback converter using HVLED001A quasi resonant Flyback controller and STF10LN80K5 1.1
PDF	DN0009 VIPer06X buck regulator, 12V 140 mA 1.2		16 Jul 2019	16 Jul 2019 DN0009 VIPer06X buck regulator, 12V 140 mA 1.2

プレゼンテーション (1)

	Resource title		Latest update
PDF	Primary side regulation controllers portfolio		21 Jun 2018	21 Jun 2018 Primary side regulation controllers portfolio

フライヤ (5)

	Resource title	Latest update
PDF	1200 V SiC diodes, 2 to 40 a in surface-mount and through-hole packages 1.0	18 Mar 2021	18 Mar 2021 1200 V SiC diodes, 2 to 40 a in surface-mount and through-hole packages 1.0
PDF	1200-1700V MDmesh K5 SERIES: Ideal for high input voltage auxiliary power supply systems 1.0	24 Nov 2020	24 Nov 2020 1200-1700V MDmesh K5 SERIES: Ideal for high input voltage auxiliary power supply systems 1.0
PDF	800-1700 V MDmesh K5 STPOWER MOSFET very high voltage super-junction series 1.0	06 Oct 2020	06 Oct 2020 800-1700 V MDmesh K5 STPOWER MOSFET very high voltage super-junction series 1.0
PDF	SOD128Flat power Schottky diodes for improved cost and space-savings 1.0	10 Sep 2018	10 Sep 2018 SOD128Flat power Schottky diodes for improved cost and space-savings 1.0
PDF	ST Diodes Finder : the new app for Android and iOS 2.0	18 Mar 2021	18 Mar 2021 ST Diodes Finder : the new app for Android and iOS 2.0

セレクション･ガイド (1)

	Resource title		Latest update
PDF	Diodes and rectifiers selection guide 2.0		17 Mar 2021	17 Mar 2021 Diodes and rectifiers selection guide 2.0

パンフレット (2)

	Resource title		Latest update
PDF	VIPerPlus - Bring a Plus to your SMPS design 05.2020		22 Apr 2021	22 Apr 2021 VIPerPlus - Bring a Plus to your SMPS design 05.2020
PDF	VIPerPlus evaluation boards 05.2018		22 Apr 2021	22 Apr 2021 VIPerPlus evaluation boards 05.2018

All tools & software

検索アプリ

製品型番	ステータス	概要	タイプ	サプライヤ
ST Protection Finder	量産中	Protection product finder application for Android, iOS and Wandoujia	検索アプリ	ST	ST Protection Finder 概要: Protection product finder application for Android, iOS and Wandoujia
ST Voltage Regulator Finder	量産中	Linear and switching voltage regulators and voltage reference applications for smartphones and tablets	検索アプリ	ST	ST Voltage Regulator Finder 概要: Linear and switching voltage regulators and voltage reference applications for smartphones and tablets
STPOWER MOSFET Finder	量産中	STPOWER MOSFET finder mobile app for tablets and smartphones	検索アプリ	ST	STPOWER MOSFET Finder 概要: STPOWER MOSFET finder mobile app for tablets and smartphones

	Resource title	Latest update
PDF	AN4685 12 V, 10 W isolated flyback converter based on VIPer25HD 1.0	13 Sep 2018	13 Sep 2018 AN4685 12 V, 10 W isolated flyback converter based on VIPer25HD 1.0
PDF	AN4479 12 V, 15 W peak 20 W isolated flyback converter based on VIPer38LE 1.0	24 Mar 2021	24 Mar 2021 AN4479 12 V, 15 W peak 20 W isolated flyback converter based on VIPer38LE 1.0
PDF	AN4260 12 V, 150 mA non-isolated buck converter using the VIPER06XS, from the VIPer™ plus family 4.2	24 Mar 2021	24 Mar 2021 AN4260 12 V, 150 mA non-isolated buck converter using the VIPER06XS, from the VIPer™ plus family 4.2
PDF	AN4940 12 V, 7.2 W VIPer0P IR remote controlled flyback topology for air conditioning applications using VIPer0P 1.0	13 Sep 2018	13 Sep 2018 AN4940 12 V, 7.2 W VIPer0P IR remote controlled flyback topology for air conditioning applications using VIPer0P 1.0
PDF	AN4924 12 V, 8.4 W peak power 30 W isolated flyback converter using VIPer38HD 1.0	24 Mar 2021	24 Mar 2021 AN4924 12 V, 8.4 W peak power 30 W isolated flyback converter using VIPer38HD 1.0
PDF	AN4812 15 W, 12 V output, isolated flyback converter using Viper35HD device from the VIPer™ Plus family of high voltage converters 2.0	24 Mar 2021	24 Mar 2021 AN4812 15 W, 12 V output, isolated flyback converter using Viper35HD device from the VIPer™ Plus family of high voltage converters 2.0
PDF	AN4830 15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D 1.0	24 Mar 2021	24 Mar 2021 AN4830 15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D 1.0
PDF	AN4896 15 W, 5 V output USB adapter using STCH02 1.0	13 Sep 2018	13 Sep 2018 AN4896 15 W, 5 V output USB adapter using STCH02 1.0
PDF	AN5030 16 W, triple output, quasi-resonant flyback converter for air conditioning applications using VIPerPlus – VIPER35LD 1.0	13 Sep 2018	13 Sep 2018 AN5030 16 W, triple output, quasi-resonant flyback converter for air conditioning applications using VIPerPlus – VIPER35LD 1.0
PDF	AN4410 3 W, 5 V isolated flyback converter using the VIPer06HN, from the VIPer™ plus family 2.0	13 Sep 2018	13 Sep 2018 AN4410 3 W, 5 V isolated flyback converter using the VIPer06HN, from the VIPer™ plus family 2.0
PDF	AN4418 3 W, 5 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family 2.0	13 Sep 2018	13 Sep 2018 AN4418 3 W, 5 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family 2.0
PDF	AN2811 3.5 W non-isolated offline constant-current LED driver based on VIPER17 1.2	13 Sep 2018	13 Sep 2018 AN2811 3.5 W non-isolated offline constant-current LED driver based on VIPER17 1.2
PDF	AN1439 30 W AC-DC adapter with the L6565 quasi-resonant PWM controller 7.0	13 Sep 2018	13 Sep 2018 AN1439 30 W AC-DC adapter with the L6565 quasi-resonant PWM controller 7.0
PDF	AN5316 35 W wide input range flyback converter using HVLED001B quasi-resonant flyback controller and STF10LN80K5 2.0	02 Jun 2020	02 Jun 2020 AN5316 35 W wide input range flyback converter using HVLED001B quasi-resonant flyback controller and STF10LN80K5 2.0
PDF	AN5335 35W transition-mode flyback converter with ultra-low THD based on HVLED007 1.2	19 Dec 2019	19 Dec 2019 AN5335 35W transition-mode flyback converter with ultra-low THD based on HVLED007 1.2
PDF	AN4404 4 W, 12 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family 2.0	13 Sep 2018	13 Sep 2018 AN4404 4 W, 12 V isolated flyback converter using the VIPer06HS, from the VIPer™ plus family 2.0
PDF	AN5442 45W USB Type-C™ PD adapter board with controllers STCH03 QR flyback,SRK1001 adaptive synchronous rectifier and STUSB4761 USB Type-C™ PD 1.1	19 Mar 2021	19 Mar 2021 AN5442 45W USB Type-C™ PD adapter board with controllers STCH03 QR flyback,SRK1001 adaptive synchronous rectifier and STUSB4761 USB Type-C™ PD 1.1
PDF	AN2753 6 W single-output VIPer17 demonstration board 2.1	13 Sep 2018	13 Sep 2018 AN2753 6 W single-output VIPer17 demonstration board 2.1
PDF	AN4941 7 W dual output (-5 V/+7 V) non-isolated flyback converter with capacitive touch sensing using VIPer0P and STM32L052 1.0	24 Mar 2021	24 Mar 2021 AN4941 7 W dual output (-5 V/+7 V) non-isolated flyback converter with capacitive touch sensing using VIPer0P and STM32L052 1.0
PDF	AN1768 ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES 1.1	24 Mar 2020	24 Mar 2020 AN1768 ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES 1.1
PDF	AN4407 Advantage of the use of an added driver source lead in discrete Power MOSFETs 2.0	13 Sep 2018	13 Sep 2018 AN4407 Advantage of the use of an added driver source lead in discrete Power MOSFETs 2.0
PDF	AN2025 CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION 1.1	13 Sep 2018	13 Sep 2018 AN2025 CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION 1.1
PDF	AN604 Calculation of conduction losses in a power rectifier 3.2	24 Mar 2021	24 Mar 2021 AN604 Calculation of conduction losses in a power rectifier 3.2
PDF	AN4021 Calculation of reverse losses in a power diode 1.0	24 Mar 2021	24 Mar 2021 AN4021 Calculation of reverse losses in a power diode 1.0
PDF	AN4381 Current sharing in parallel diodes 1.0	24 Mar 2021	24 Mar 2021 AN4381 Current sharing in parallel diodes 1.0
PDF	AN3028 EVLVIP16L-4WFN: 16 V / 4.5 W, 60 kHz non-isolated flyback demonstration board using the VIPer16LN 1.0	13 Sep 2018	13 Sep 2018 AN3028 EVLVIP16L-4WFN: 16 V / 4.5 W, 60 kHz non-isolated flyback demonstration board using the VIPer16LN 1.0
PDF	AN2840 EVLVIP17-5WCHG: 5 W low standby consumption battery charger demonstration board based on the VIPER17HN 1.1	13 Sep 2018	13 Sep 2018 AN2840 EVLVIP17-5WCHG: 5 W low standby consumption battery charger demonstration board based on the VIPER17HN 1.1
PDF	AN4106 EVLVIP26L-12WFN: 12 V/12 W, 60 kHz non-isolated flyback 1.0	13 Sep 2018	13 Sep 2018 AN4106 EVLVIP26L-12WFN: 12 V/12 W, 60 kHz non-isolated flyback 1.0
PDF	AN2950 EVLVIPER28L-10W: 5 V/10 W, 60 kHz isolated flyback with extra power management 1.0	13 Sep 2018	13 Sep 2018 AN2950 EVLVIPER28L-10W: 5 V/10 W, 60 kHz isolated flyback with extra power management 1.0
PDF	AN4932 HVLED001A - enhanced QR high power factor flyback controller for LED drivers 2.0	09 Jan 2019	09 Jan 2019 AN4932 HVLED001A - enhanced QR high power factor flyback controller for LED drivers 2.0
PDF	AN1326 L6565 quasi-resonant controller 7.3	13 Sep 2018	13 Sep 2018 AN1326 L6565 quasi-resonant controller 7.3
PDF	AN1453 NEW FAMILY OF 150V POWER SCHOTTKY 1.1	24 Mar 2021	24 Mar 2021 AN1453 NEW FAMILY OF 150V POWER SCHOTTKY 1.1
PDF	AN5046 Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages 4.0	24 Mar 2021	24 Mar 2021 AN5046 Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages 4.0
PDF	AN5088 Rectifiers thermal management, handling and mounting recommendations 2.0	24 Mar 2021	24 Mar 2021 AN5088 Rectifiers thermal management, handling and mounting recommendations 2.0
PDF	AN533 SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting 3.6	24 Mar 2021	24 Mar 2021 AN533 SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting 3.6
PDF	AN443 SERIES OPERATION ON FAST RECTIFIERS 2.1	24 Mar 2021	24 Mar 2021 AN443 SERIES OPERATION ON FAST RECTIFIERS 2.1
PDF	AN5333 SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family 1.0	16 Dec 2019	16 Dec 2019 AN5333 SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family 1.0
PDF	AN2934 STEVAL-ISA062V1: 6 W, wide-range dual and single output SMPS demonstration board based on the VIPer17 1.0	13 Sep 2018	13 Sep 2018 AN2934 STEVAL-ISA062V1: 6 W, wide-range dual and single output SMPS demonstration board based on the VIPer17 1.0
PDF	AN4165 STEVAL-ISA111V1: 12 V / 12 W, 115 kHz non-isolated flyback 2.0	22 Jan 2020	22 Jan 2020 AN4165 STEVAL-ISA111V1: 12 V / 12 W, 115 kHz non-isolated flyback 2.0
PDF	AN4116 STEVAL-ISA112V1: 12 V/4 W, 115 kHz non-isolated flyback 1.0	13 Sep 2018	13 Sep 2018 AN4116 STEVAL-ISA112V1: 12 V/4 W, 115 kHz non-isolated flyback 1.0
PDF	AN4164 STEVAL-ISA113V1: 12 V/4 W, 115 kHz non-isolated flyback 1.0	13 Sep 2018	13 Sep 2018 AN4164 STEVAL-ISA113V1: 12 V/4 W, 115 kHz non-isolated flyback 1.0
PDF	AN4273 STEVAL-ISA114V1: 5 V / 0.8 W 30 kHz buck with the VIPer06XS 3.0	13 Sep 2018	13 Sep 2018 AN4273 STEVAL-ISA114V1: 5 V / 0.8 W 30 kHz buck with the VIPer06XS 3.0
PDF	AN4562 STEVAL-ISA116V1: 5 W, 2 output wide range buck converter based on the VIPER26LD 1.0	13 Sep 2018	13 Sep 2018 AN4562 STEVAL-ISA116V1: 5 W, 2 output wide range buck converter based on the VIPER26LD 1.0
PDF	AN4259 STEVAL-ISA117V1 12 V / 4.2 W, 60 kHz flyback isolated with VIPer16LN 3.0	13 Sep 2018	13 Sep 2018 AN4259 STEVAL-ISA117V1 12 V / 4.2 W, 60 kHz flyback isolated with VIPer16LN 3.0
PDF	AN4345 STEVAL-ISA119V1: 1.5 W double output buck product evaluation board based on the VIPER16LD 1.0	13 Sep 2018	13 Sep 2018 AN4345 STEVAL-ISA119V1: 1.5 W double output buck product evaluation board based on the VIPER16LD 1.0
PDF	AN4372 STEVAL-ISA134V1: 12 V / 4 W, 115 kHz isolated flyback 2.0	13 Sep 2018	13 Sep 2018 AN4372 STEVAL-ISA134V1: 12 V / 4 W, 115 kHz isolated flyback 2.0
PDF	AN4836 STEVAL-ISA174V1: VIPer0P 7 W double output non-isolated flyback 2.0	24 Mar 2021	24 Mar 2021 AN4836 STEVAL-ISA174V1: VIPer0P 7 W double output non-isolated flyback 2.0
PDF	AN4878 STEVAL-ISA175V1 three-output isolated flyback converter for smart meter and power line communication systems based on VIPER26HD 1.0	13 Sep 2018	13 Sep 2018 AN4878 STEVAL-ISA175V1 three-output isolated flyback converter for smart meter and power line communication systems based on VIPER26HD 1.0
PDF	AN4855 STEVAL-ISA177V1 5 V/4.25 W non-isolated flyback demo with VIPer01 2.0	24 Mar 2021	24 Mar 2021 AN4855 STEVAL-ISA177V1 5 V/4.25 W non-isolated flyback demo with VIPer01 2.0
PDF	AN4858 STEVAL-ISA178V1 5 V/1 W 30 kHz buck demo with VIPer01 1.0	24 Mar 2021	24 Mar 2021 AN4858 STEVAL-ISA178V1 5 V/1 W 30 kHz buck demo with VIPer01 1.0
PDF	AN4857 STEVAL-ISA179V1 15 V/2.25 W 60 kHz buck demo with VIPer0P 1.0	13 Sep 2018	13 Sep 2018 AN4857 STEVAL-ISA179V1 15 V/2.25 W 60 kHz buck demo with VIPer0P 1.0
PDF	AN4905 STEVAL-ISA180V1 12 V/0.6 A isolated flyback demo with VIPer0P 1.0	24 Mar 2021	24 Mar 2021 AN4905 STEVAL-ISA180V1 12 V/0.6 A isolated flyback demo with VIPer0P 1.0
PDF	AN2945 STM8S and STM32™ MCUs: a consistent 8/32-bit product line for painless migration 1.4	17 Apr 2021	17 Apr 2021 AN2945 STM8S and STM32™ MCUs: a consistent 8/32-bit product line for painless migration 1.4
PDF	AN2872 Super wide-range buck converter based on the VIPer16 1.2	22 Jan 2020	22 Jan 2020 AN2872 Super wide-range buck converter based on the VIPer16 1.2
PDF	AN1542 THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION 1.1	13 Sep 2018	13 Sep 2018 AN1542 THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION 1.1
PDF	AN869 Tj max limit of Schottky diodes 2.2	24 Mar 2021	24 Mar 2021 AN869 Tj max limit of Schottky diodes 2.2
PDF	AN4419 VIPER37HE: 15 W wide range single output evaluation board 1.0	24 Mar 2021	24 Mar 2021 AN4419 VIPER37HE: 15 W wide range single output evaluation board 1.0
PDF	AN2929 Wide range [90 V - 265 V] input, 5 V - 12 W output VIPER27LN demonstration board with improved standby performance 2.0	13 Sep 2018	13 Sep 2018 AN2929 Wide range [90 V - 265 V] input, 5 V - 12 W output VIPER27LN demonstration board with improved standby performance 2.0
PDF	AN3011 Wide range input (90 - 265), single output (5 V-11 W) EVLVIP27H-12SB, VIPer27 demonstration board 1.1	13 Sep 2018	13 Sep 2018 AN3011 Wide range input (90 - 265), single output (5 V-11 W) EVLVIP27H-12SB, VIPer27 demonstration board 1.1