Summary:
working principle
The isolated flyback converter shown in the figure is based on the TOP258PN (U1) in the TOPSwi tch-HX IC family. Selecting a P-package (8-pin DIP package) eliminates the need for external heat sinks to reduce cost. Typical applications include LCD display power supplies, which typically require lower standby and no-load power consumption.
design feature
- high efficiency
- Full load efficiency >82% (according to CEC/Energy Star 2008 requirements for 82% load efficiency)
- Output power is 35 W, no external heat sink is required when operating in 50°
- No load and standby low power
- Standby output power is 0.55 W at input power <1 W
- No-load power consumption <160 mW at 230 V AC input
- Integrated safety and reliability:
- Accurate, auto-recovery and hysteretic shutdown with hysteresis shuts down IC temperature over a wide range of conditions
- Enters the auto-restart protection state when the output short circuit and the feedback loop open loop
- Output overvoltage protection can be configured for latching or auto-recovery
- Conforms to EN55022 and CISPR-22 Class B for conducted EMI requirements with EMI margin >10 dBμV
See the PDF document for details (click on the PDF file to download)
Machined Round Pin Header
Machined Round Pin Header,Machined Pin Connectors Pitch 1.27 Mm,Machined Pin Connectors,Pin Connectors Pitch 1.27 Mm
Shenzhen Hongyian Electronics Co., Ltd. , https://www.hongyiancon.com