Description
QC7707 Withstand voltage 40V Synchronous rectifier chip IC 5V2.1A Charger chip Alternative QC7707 schottky diodes
- Type: Schottky Diode
- Condition: New
- Max. Forward Voltage: 40V
- Model Number: QC7707
- Package Type: Surface Mount
The customers applications:
Tests to replace Schottky diode rectifier (secondary side) on a few FlyBack/DCM 5V 2A power supply/adapters, as an attempt to reduce heat generated by the rectification .. reduce voltage drop across the rectifier. I read the specs .. the test items run well below the frequency limit of 100KHz, and have a long enough off/reverse time per cycle, and should keep the chip running. We’ll see. Anyway, this is worth a try pass or fail.
This sort of technology has been around for a few years now, but seems to be very rarely used.
I’m a HAM radio operator, and conduct experiments from time to time, as many of us do, and discuss our results.
QC7707 is a synchronous rectifier diode integrated with 40V MOSFET. It is used to replace the rectifier diode of flyback converter, which can be significantly reduced.
Heating, improve the conversion efficiency of the system. IC determines its switching state by detecting the source drain voltage of the integrated MOSFET.
QC7707 is compatible with either discontinuous or quasi resonant flyback converters.
The main features:
Compatible with DCM or QR flyback converter.
Maximum switching frequency of 100kHz.
SOP6 package form.
Typical Applications:
Mobile device charger
In pieces adapter
Flyback converter
Application block diagram (component parameters are adjusted according to application)
Circuit function block diagram
Maximum rating
Electrical characteristic parameter
Product dimension drawing
QC7707 Datasheet as following .
100PCS 1N4007 4007 1A 1000V DO-41 High quality Rectifier Diode IN4007 1n4007
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