Multi-Mode PWM Power Switch with Primary-Side Feedback
Features
l Built-in 650V Power MOSFET
l Low Start-Up Current (<2uA)
l Primary-Side Feedback Control with Multi-Mode Operation
CCM @ Heavy Load and Low Line
QR-Like Operation @ Medium Load
Green mode with Valley Skip at Light Load
PFM Mode at No Load
l Built-In Adjustable Load Regulation Compensation
l Constant Voltage/Constant Current Operation
l Output Short Protection
l FB Pin Open/Short Protection
l Soft Driver
l 8ms Soft-start
l OVP (Over Voltage Protection) on Vcc Pin
l On Chip OTP Protection
Description
The GR9210HL integrates a high performance primary side feedback PWM controller and a high voltage power MOSFET of 650V. It minimizes the components counts and is available in a tiny DIP-8, SOP-7 and SOP-8 package. Those make it an ideal design for low cost application. It provides functions of low startup current, green- mode power-saving operation, VCC over-voltage protection, and FB pin abnormal conditions sensing to prevent the circuit being damaged from the abnormal conditions.
Applications
l Mobile Phone Adapter
l Lower Power AC/DC Adapter
Typical Application Information
Package
