Power Integrations AN-75: LYTSwitch-6 Design Guide for Isolated LED Drivers
Design guide for isolated AC-DC flyback LED drivers using the LYTSwitch-6 family with SVFS2PFC for high efficiency and power factor.
Overview
This application note provides a comprehensive design procedure for isolated AC-DC power supplies using the LYTSwitch-6 IC family. It describes the Switched Valley-Fill Power Factor Correction (SVFS2PFC) architecture, which utilizes a single-stage flyback topology to achieve high power factor and efficiency. The document includes step-by-step instructions for selecting components such as the LYT6063C and LYT6068C controllers, calculating transformer parameters, and optimizing switching frequencies using PIXls Designer software. It highlights the use of FluxLink technology for primary and secondary control integration and synchronous rectification.
Use Cases
- Designing high-efficiency offline LED drivers for compact enclosures
- Implementing single-stage PFC in isolated AC-DC flyback converters
- Developing LED lighting solutions with DALI or 3-in-1 dimming requirements
- Calculating magnetic component specifications for SVFS2PFC power stages
Topics
Referenced Parts
LYT6063C
Power Integrations
예를 들어, LYT6063C는 650V MOSFET 디바이스를 나타내고
LYT6065C
Power Integrations
LYT6065C/6075C 24 W
LYT6067C
Power Integrations
LYT6067C/6077C 40 W
LYT6068C
Power Integrations
DEVNAME LYT6068C LYT6068C PI 디바이스 이름
LYT6073C
Power Integrations
LYT6073C는 725V를 나타냅니다.
LYT6075C
Power Integrations
LYT6065C/6075C 24 W
LYT6077C
Power Integrations
LYT6067C/6077C 40 W
PC47EE10-Z
TDK
15W~30W EE10 PC47EE10-Z
PC47EE25-Z
TDK
10W ‒ 20W EE25 PC47EE25-Z
PC95RM05Z
TDK
0W ‒ 10W RM5 PC95RM05Z
PC95RM06Z
TDK
10W ‒ 20W RM6 PC95RM06Z
PC95RM08Z
TDK
20W ‒ 30W RM8 PC95RM08Z
PC95RM10Z
TDK
30W ‒ 50W RM10 PC95RM10Z
BPQ26/20-1112CPFR
Power Integrations
BOBBINID BPQ26/20-1112CPFR 플라이백 보빈
| PQ20/20-3F3 | Ferroxcube | 20W ‒ 30W PQ2020 PQ20/20-3F3 |
| PQ26/20-3F3 | Ferroxcube | CR_PN PQ26/20-3F3 플라이백 코어 코드 |
| PC40EE13-Z | TDK | CR_PN_BOOST PC40EE13-Z 부스트 코어 코드 |
| PC47EE13-Z | TDK | 30W~45W EE13 PC47EE13-Z |
| PC47EE16-Z | TDK | > 45 W EE16 PC47EE16-Z |
| PC47EE19-Z | TDK | 0W ‒ 10W EE19 PC47EE19-Z |
| PC47EE22-Z | TDK | 10W ‒ 20W EE22 PC47EE22-Z |
| PC47EE30-Z | TDK | 20W ‒ 50W EE30 PC47EE30-Z |
| LYT6063C | Power Integrations | 예를 들어, LYT6063C는 650V MOSFET 디바이스를 나타내고 |
| LYT6065C | Power Integrations | LYT6065C/6075C 24 W |
| LYT6067C | Power Integrations | LYT6067C/6077C 40 W |
| LYT6068C | Power Integrations | DEVNAME LYT6068C LYT6068C PI 디바이스 이름 |
| LYT6073C | Power Integrations | LYT6073C는 725V를 나타냅니다. |
| LYT6075C | Power Integrations | LYT6065C/6075C 24 W |
| LYT6077C | Power Integrations | LYT6067C/6077C 40 W |
| PC47EE10-Z | TDK | 15W~30W EE10 PC47EE10-Z |
| PC47EE25-Z | TDK | 10W ‒ 20W EE25 PC47EE25-Z |
| PC95RM05Z | TDK | 0W ‒ 10W RM5 PC95RM05Z |
| PC95RM06Z | TDK | 10W ‒ 20W RM6 PC95RM06Z |
| PC95RM08Z | TDK | 20W ‒ 30W RM8 PC95RM08Z |
| PC95RM10Z | TDK | 30W ‒ 50W RM10 PC95RM10Z |
| BPQ26/20-1112CPFR | Power Integrations | BOBBINID BPQ26/20-1112CPFR 플라이백 보빈 |