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 network arranged as either a half- or full-bridge to feed the resonant LLC tank that effectively filters out harmonics providing a sinusoidal like voltage and current waveform. This in turn feeds a transformer that provides voltage scaling and primary-secondary isolation. The converter power flow is controlled by modulating the square wave frequency with respect to the tank circuit's resonance. In an LLC resonant converter, all semiconductor switches are soft-switching, or zero-voltage switching (ZVS), at turn-on for the primary MOSFETs and zero-current switching (ZCS) at both turn-on and turn-off for the rectifiers in the secondary; resulting in low electro-magnetic emissions levels (EMI). In addition, it can enable a high degree of integration in the magnetic parts, enabling the design of converters with higher efficiency and power density.
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Application Notes (5 of 35)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.0 | 02 Aug 2022 | 02 Aug 2022 | ||
| 2.0 | 23 May 2022 | 23 May 2022 | ||
| 1.0 | 02 Sep 2022 | 02 Sep 2022 | ||
| 3.0 | 10 Nov 2022 | 10 Nov 2022 | ||
| 2.0 | 02 Aug 2022 | 02 Aug 2022 | ||
| 2.0 | 02 Aug 2022 | 02 Aug 2022 | ||
| 1.3 | 02 Aug 2022 | 02 Aug 2022 | ||
| 3.1 | 02 Aug 2022 | 02 Aug 2022 | ||
| 1.0 | 11 Mar 2022 | 11 Mar 2022 | ||
| 1.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 1.1 | 01 Apr 2022 | 01 Apr 2022 | ||
| 2.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 3.1 | 29 Mar 2022 | 29 Mar 2022 | ||
| 1.1 | 02 Aug 2022 | 02 Aug 2022 | ||
| 3.2 | 10 Oct 2022 | 10 Oct 2022 | ||
| 1.0 | 10 Oct 2022 | 10 Oct 2022 | ||
| 1.0 | 10 Oct 2022 | 10 Oct 2022 | ||
| 1.0 | 29 Mar 2022 | 29 Mar 2022 | ||
| 2.0 | 10 Oct 2022 | 10 Oct 2022 | ||
| 2.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 4.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 1.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 1.1 | 23 Apr 2021 | 23 Apr 2021 | ||
| 6.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 1.0 | 07 Mar 2022 | 07 Mar 2022 | ||
| 1.1 | 10 Oct 2022 | 10 Oct 2022 | ||
| 4.0 | 10 Oct 2022 | 10 Oct 2022 | ||
| 2.0 | 10 Oct 2022 | 10 Oct 2022 | ||
| 3.6 | 05 Dec 2022 | 05 Dec 2022 | ||
| 2.1 | 10 Oct 2022 | 10 Oct 2022 | ||
| 2.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 3.0 | 13 Sep 2018 | 13 Sep 2018 | ||
| 4.0 | 23 Apr 2021 | 23 Apr 2021 | ||
| 1.1 | 10 Oct 2022 | 10 Oct 2022 | ||
| 2.2 | 10 Oct 2022 | 10 Oct 2022 |
Technical Notes & Articles (1)
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| 1.0 | 27 Sep 2022 | 27 Sep 2022 |
Design Notes & Tips (2)
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| 1.0 | 10 Oct 2022 | 10 Oct 2022 | ||
| 1.2 | 23 Apr 2021 | 23 Apr 2021 |
Presentations (3)
| Resource title | Version | Latest update | ||
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| 13 Jan 2016 | 13 Jan 2016 | |||
| 2.0 | 01 Aug 2015 | 01 Aug 2015 | ||
| 24 Feb 2016 | 24 Feb 2016 |
Flyers (2)
| Resource title | Version | Latest update | ||
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| 1.0 | 21 Jul 2020 | 21 Jul 2020 | ||
| 2.0 | 07 Nov 2022 | 07 Nov 2022 |