Quasi-Resonant PSR CC/CV PWM Power Switch
CX7501
Quasi-Resonant PSR CC/CV PWM Power Switch
FEATURES
Low Cost Solution Built-in 800V power BJT Quasi-Resonant ...
Description
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 Lim...
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