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In a typical AC-DC switch mode power supply (SMPS), the AC mains is rectified and filtered to feed a power factor correction (PFC) stage. Then, by means of high-frequency modulation techniques – sometimes in excess of 1 MHz to reduce size of transformers and inductors – it is then delivered to a DC load with the desired voltage and current ratings.

To find the best solution for their applications, designers have to choose the best power topology – fly-back, buck, or quasi-resonant – or the implementation – based on highly integrated converters or with discrete power switches and controllers – or even decide to use an advanced digital implementation. Whatever their choice, the right semiconductor products are key to meeting their specific design targets.

ST’s broad product portfolio includes highly-integrated AC-DC converters and controllers, silicon and silicon carbide (SiC) power MOSFETs and rectifiers, IGBTs, protection ICs and specifically designed digital controllers and STM32 microcontrollers. We also provide a comprehensive range of hardware and software evaluation and development tools including our eDesignSuite that helps engineers design high efficiency power supplies and converters.

Buck and Buck-Boost Converter
Buck and Buck-Boost Converter
Off-line converters based on buck, or step-down, and buck-boost, or step-down/up, topologies convert the mains to a regulated DC output...
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Flyback Converter
Flyback Converter
In its various implementations including primary side and secondary side regulation, fixed switching frequency or quasi resonant operation...
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Forward Converter
Forward Converter
The single-switch forward converter represents a valid alternative to the single-switch flyback topology in isolated, off-line, step-down...
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LLC Resonant Converter
LLC Resonant Converter
The LLC converter is a resonant inverter with three reactive elements where the DC input voltage is turned into a square wave by a switch...
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PFC Converter - Single Phase Input
PFC Converter - Single Phase Input
Power Factor Correction is a technique of shaping input current to be as sinusoidal as possible to reduce harmonic distortion and associated...
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PFC Converter - Three Phase Input
PFC Converter - Three Phase Input
Power Factor Correction is a technique of shaping input current to be as sinusoidal as possible to reduce harmonic distortion and associated...
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PS ZVS FB Converter
PS ZVS FB Converter
In a phase-shifting, zero voltage switching full-bridge converter, the two legs of the full-bridge are switched with two square waves whose...
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Two Switch Flyback Converter
Two Switch Flyback Converter
In a two-switch flyback topology, a high-side power MOSFET – placed between the input voltage rail and the transformer – and snubber...
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Two Switch Forward Converter
Two Switch Forward Converter
In a two-transistor forward the two transistors of the primary are switched on and power is transferred to the secondary winding of the transformer and...
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Technical Documentation

    • Description Version Size Action
      AN5034
      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller
      2.0
      7.59 MB
      PDF
      AN5118
      12 V – 150 W power supply based on STNRG011 digital combo and SRK2001 adaptive synchronous rectifier controller
      1.1
      5.26 MB
      PDF
      AN5106
      150 V – 150 W LED driver using the STCMB1 transition mode PFC and HBR resonant tank combo controller
      3.0
      6.17 MB
      PDF
      AN5316
      35 W wide input range flyback converter using HVLED001B quasi resonant Flyback controller and STF10LN80K5
      1.0
      2.8 MB
      PDF
      AN5335
      35W transition-mode flyback converter with ultra-low THD based on HVLED007
      1.2
      3.36 MB
      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
      14.03 MB
      PDF
      AN4656
      Bootloading procedure for STLUX™ and STNRG™ digital controllers
      3.1
      588.34 KB
      PDF
      AN5264
      EVL400W-EUPL7 400W SMPS demonstration board
      2.0
      6.03 MB
      PDF
      AN5119
      How to design an application from draft with STNRG011
      1.1
      343.91 KB
      PDF
      AN5333
      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family
      1.0
      1.75 MB
      PDF
      AN5034

      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller

      AN5118

      12 V – 150 W power supply based on STNRG011 digital combo and SRK2001 adaptive synchronous rectifier controller

      AN5106

      150 V – 150 W LED driver using the STCMB1 transition mode PFC and HBR resonant tank combo controller

      AN5316

      35 W wide input range flyback converter using HVLED001B quasi resonant Flyback controller and STF10LN80K5

      AN5335

      35W transition-mode flyback converter with ultra-low THD based on HVLED007

      AN5442

      45W USB Type-C™ PD adapter board with controllers STCH03 QR flyback,SRK1001 adaptive synchronous rectifier and STUSB4761 USB Type-C™ PD

      AN4656

      Bootloading procedure for STLUX™ and STNRG™ digital controllers

      AN5264

      EVL400W-EUPL7 400W SMPS demonstration board

      AN5119

      How to design an application from draft with STNRG011

      AN5333

      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family

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