In its various implementations including primary side and secondary side regulation, fixed switching frequency or quasi resonant operation, an isolated or non-isolated flyback topology is most often found in off-line converters for an output power ranging from a few watts up to 100 W. The circuit operation is based on a single switch topology and the energy taken from the input is stored in the transformer’s primary inductance while the power switch is switched on, and transferred to the secondary output when the power switch is switched off. Efficiency, power density and low stand-by power together are key requirements for flyback topologies together with reliability.

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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.
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Application Notes (5 of 60)
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1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 05 Apr 2022 | 05 Apr 2022 | ||
4.2 | 05 Apr 2022 | 05 Apr 2022 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 05 Apr 2022 | 05 Apr 2022 | ||
2.0 | 05 Apr 2022 | 05 Apr 2022 | ||
1.0 | 05 Apr 2022 | 05 Apr 2022 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
2.0 | 13 Sep 2018 | 13 Sep 2018 | ||
2.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.2 | 13 Sep 2018 | 13 Sep 2018 | ||
7.0 | 13 Sep 2018 | 13 Sep 2018 | ||
2.0 | 02 Jun 2020 | 02 Jun 2020 | ||
1.2 | 19 Dec 2019 | 19 Dec 2019 | ||
2.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.1 | 07 Mar 2022 | 07 Mar 2022 | ||
2.1 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 05 Apr 2022 | 05 Apr 2022 | ||
1.1 | 01 Apr 2022 | 01 Apr 2022 | ||
2.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.1 | 01 Apr 2022 | 01 Apr 2022 | ||
3.2 | 01 Apr 2022 | 01 Apr 2022 | ||
1.0 | 01 Apr 2022 | 01 Apr 2022 | ||
1.0 | 29 Mar 2022 | 29 Mar 2022 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.1 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 13 Jun 2022 | 13 Jun 2022 | ||
2.0 | 09 Jan 2019 | 09 Jan 2019 | ||
7.3 | 13 Sep 2018 | 13 Sep 2018 | ||
1.1 | 29 Mar 2022 | 29 Mar 2022 | ||
4.0 | 05 Apr 2022 | 05 Apr 2022 | ||
2.0 | 01 Apr 2022 | 01 Apr 2022 | ||
3.6 | 29 Mar 2022 | 29 Mar 2022 | ||
2.1 | 29 Mar 2022 | 29 Mar 2022 | ||
1.0 | 07 Mar 2022 | 07 Mar 2022 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
2.0 | 22 Jan 2020 | 22 Jan 2020 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
3.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
3.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
2.0 | 13 Sep 2018 | 13 Sep 2018 | ||
2.0 | 05 Apr 2022 | 05 Apr 2022 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
2.0 | 05 Apr 2022 | 05 Apr 2022 | ||
1.0 | 05 Apr 2022 | 05 Apr 2022 | ||
1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 05 Apr 2022 | 05 Apr 2022 | ||
1.5 | 07 Jun 2021 | 07 Jun 2021 | ||
1.2 | 22 Jan 2020 | 22 Jan 2020 | ||
1.1 | 29 Mar 2022 | 29 Mar 2022 | ||
2.2 | 29 Mar 2022 | 29 Mar 2022 | ||
1.0 | 05 Apr 2022 | 05 Apr 2022 | ||
2.0 | 13 Sep 2018 | 13 Sep 2018 | ||
1.1 | 13 Sep 2018 | 13 Sep 2018 |
Design Notes & Tips (4)
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1.1 | 13 Sep 2018 | 13 Sep 2018 | ||
1.0 | 18 Mar 2022 | 18 Mar 2022 | ||
1.0 | 18 Mar 2022 | 18 Mar 2022 | ||
1.2 | 16 Jul 2019 | 16 Jul 2019 |
Presentations (1)
Resource title | Version | Latest update | ||
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21 Jun 2018 | 21 Jun 2018 |
Flyers (5)
Resource title | Version | Latest update | ||
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1.0 | 01 Apr 2022 | 01 Apr 2022 | ||
1.0 | 24 Nov 2020 | 24 Nov 2020 | ||
1.0 | 06 Oct 2020 | 06 Oct 2020 | ||
1.0 | 10 Sep 2018 | 10 Sep 2018 | ||
2.0 | 01 Apr 2022 | 01 Apr 2022 |
Brochures (2)
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05.2020 | 11 Apr 2022 | 11 Apr 2022 | ||
05.2018 | 11 Apr 2022 | 11 Apr 2022 |
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![]() | 45W USB Type-C Power Delivery adapter SL-STCH03-45W Active |

45W USB Type-C Power Delivery adapter
SL-STCH03-45W
Active