UPSR108中文资料HIGH PRECISION CC/CV PRIMARY-SIDE PWM CONTROLLER WITH FAST DYNAMIC RESPONSE数据手册UTC规格书

描述 Description

The UTC UPSR108 is a primary controller mode charger andadapter applications. The controlled variable is transferred by anauxiliary winding from the secondary to the primary side. Thedevice integrates PWM controller to enhance the performance ofQuasi Resonant (QR) mode flyback converters.The UTC UPSR108 operates in primary-side sensing andregulation. Opto-coupler and TL431 could be eliminated. It alsoprovides off-time modulation to linearly decrease PWM frequencyunder light-load conditions so that low standby power can beachieved.The UTC UPSR108 integrates functions and protections ofUnder Voltage Lockout (UVLO), VDD Over Voltage Protection (VDDOVP), Output Over Voltage Protection (Output OVP), OTP, SoftStart, Cycle-by-cycle Current Limiting (OCP), Pin FloatingProtection, Gate Clamping, VDD Clamping.

特性 Features

±5% CC and CV Precision Easily Meet EPS Level 6 QR Mode Control for High Efficiency and Low EMI Programmable CV and CC Regulation Less than 100mW Standby Power Programmable Cable drop Compensation Pin Floating Protection Fast Dynamic Response Built-in Soft Start Output Over Voltage Protection Cycle-by-Cycle Current Limiting Built-in Leading Edge Blanking (LEB) VDD Under Voltage Lockout with Hysteresis (UVLO) VDD OVP VDD Clamp