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CX7501

CXW
Part Number CX7501
Manufacturer CXW
Description Quasi-Resonant PSR CC/CV PWM Power Switch
Published Feb 13, 2020
Detailed Description CX7501 Quasi-Resonant PSR CC/CV PWM Power Switch FEATURES  Low Cost Solution Built-in 800V power BJT  Quasi-Resonant ...
Datasheet PDF File CX7501 PDF File

CX7501
CX7501

Overview
CX7501 Quasi-Resonant PSR CC/CV PWM Power Switch FEATURES  Low Cost Solution Built-in 800V power BJT  Quasi-Resonant Primary Side Regulation (QR-PSR) Control with High Efficiency  Multi-Mode PSR Control  Fast Dynamic Response  Built-in Dynamic Base Drive  Audio Noise Free Operation  ±4% CC and CV Regulation  Low Standby Power <70mW  Programmable Cable Drop Compensation (CDC) in CV Mode  Built-in AC Line & Load CC Compensation  Build in Protections:  Short Load Protection (SLP)  Cycle-by-Cycle Current Limiting  Leading Edge Blanking (LEB)  Pin Floating Protection  VDD OVP & UVP & Clamp  Over temperature protection(OTP)  Available with CX7501 Versions in SOP-7 Package APPLICATIONS  Battery Chargers for Cellular Phones  AC/DC Power Adapter and LED Lightings GENERAL DESCRIPTION CX7501 is a high performance Quasi Resonant (QR) Primary Side Regulation (PSR) PWM power switch with high precision CV/CC control ideal for charger applications.
In CV mode, CX7501 adopts Multi Mode QR Control which uses the hybrid of AM (Amplitude Modulation) mode and (Frequency Modulation) FM mode to improve system efficiency and reliability.
In CC mode, the IC uses PFM control with line and load CC compensation.
The IC can achieve fast dynamic response.
The built-in Cable Drop Compensation (CDC) function can provide excellent CV performance.
CX7501 integrates functions and protections of Under Voltage Lockout (UVLO), VDD over Voltage Protection (VDD OVP), Cycle-by-cycle Current Limiting (OCP), Short Load Protection (SLP), OnChip Thermal Shutdown, VDD Clamping, etc.
TYPICAL APPLICATION CIRCUIT SHENZHEN CHENGXINGWEI TECHNOLOGY CO.
LTD CX7501 1 Pin Configuration CX7501 Quasi-Resonant PSR CC/CV PWM Power Switch Pin Description Pin Number Pin Name 1 FB 2 CS 3 VDD 4E 5,6 HV 7 GND Block Diagram I/O Description System feedback pin which regulates both the output voltage in CV I mode and output current in CC mode based on the flyback voltage of the auxiliary winding.
I ...


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