RS2336 700V High Voltage Quasi-Resonant Fly-back PWM Controller DESCRIPTION RS2336 is a highly performance offline 700V high voltage start up Quasi-Resonant (QR) controller for low power fly-back converter applications. RS2336 features multiple modes for controlling power conversion that are designed to achieve maximum efficient across a wide range of loads. At normal load condition, it operates in QR mode with minimum drain voltage switching. It operates in PFM mode for high power conversion efficiency at light load condition. When the loading is very small RS2336 operates in Hiccup Mode to minimize the switching loss. As a result, lower standby power consumption and higher conversion efficiency is achieved. RS2336 offers power on programmable soft-start control and ensures safe operation with complete protections against all the fault conditions. Built-in protections circuitry includes Cycle-by-Cycle current limiting, peak current protection, OTP，OLP, Output OVP,VCC OVP, VCC clamp and UVLO, etc. APPLICATIONS Offline AC/DC Fly-back Converter for Power Adapter and Open-frame SMPS NB/DVD/Portable DVD Power Supplies LCD Monitor/TV/PC/Set-Top Box Power Supplies LED power FEATURES Multi-Mode Operation Quasi-Resonant (QR) Operation at Normal Loading Pulse Frequency Modulation (PFM) Operation at Light Loading Hiccup Mode (HM) Operation at No Loading 700V high voltage start up Low standby power（<0.15W） 40KHz Minimum Frequency Limit at QR Mode 130KHz Maximum Frequency Limit Maximum On Time Limit Maximum and Minimum OFF time Limit Built-in Leading Edge Blanking Programmable Soft-start External Latch Triggering Rich Protections For System Reliability including VCC Under Voltage Lockout with Hysteresis (UVLO) Cycle-by-Cycle Current Limiting and Peak Current Protection (OCP) Programmable Output Over Voltage Protection (OVP) Over Loading Protection (OLP) Over Temperature Protection (OTP) VCC Over Voltage Protection VCC Clamp RoHS Compliant and 100% Lead (Pb)-Free Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No.233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan RS2336 BLOCK DIAGRAM HV VCC HV Start SS UVLO Regulator Soft Start S Timer DEM Valley Det FB Mode Sel Reference Q Driver GATE R Logic Protect PWM CS LEB GND APPLICATION CIRCUITS V1.0 2 October 2013 RS2336 ORDERING INFORMATION Device Device Code Y is package designator : S : SOP-8 D : DIP-8 Z is Lead Free designator : P: Commercial Standard, Lead (Pb) Free and Phosphorous (P) Free Package RS2336 Y Z PIN ASSIGNMENTS DEM 1 8 HV SS 2 7 FB 3 CS 4 DEM 1 8 HV VCC SS 2 7 VCC 6 GATE FB 3 6 GATE 5 GND CS 4 5 GND DIP-8 SOP-8 PIN DESCRIPTION Pin Name DEM SS FB CS GND GATE VCC HV V1.0 Description Input from auxiliary winding for demagnetization timing. The auxiliary fly-back signal ensures discontinuous operation. Soft-start programming pin. Connect a capacitor to ground. Feedback input pin. PWM duty cycle is determined by the voltage level. The voltage level at this pin also controls the operation mode. Current sense input. Ground. Gate driver output. Drive the power MOSFET. Chip power supply pin. Input for high voltage start up. 3 Pin No. 1 2 3 4 5 6 7 8 October 2013 RS2336 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V1.0 13 October 2013