AP3303 QUASI-RESONANT PWM CONTROLLER Description Pin Assignments The AP3303 is a peak-current control, Quasi-Resonant (QR) PWM (Top View) controller which is specially designed for offline power supply that requires ultra-low standby power, high-power density and comprehensive protection. It can coordinate with secondary side USBPD or quick charger controller which can provide a flyback charger solution. At no load or light load, the IC will enter the burst mode to minimize standby power consumption. The minimum switching frequency (typical: 24kHz) is set to avoid the audible noise. When the load increases, the IC will enter QR mode with frequency foldback to improve system efficiency and EMI performance. The maximum switching frequency (typical: 120kHz) is set to clamp the QR frequency to reduce switching power loss. Furthermore, the frequency dithering function is built in to reduce EMI emission. The AP3303 provides an inner high-voltage start-up function through HV pin which can reduce the standby loss. Moreover, The AP3303 SSOP-9 (Type CJ) integrates a VCC LDO circuitry, allowing the LDO to regulate the wide range V to an acceptable value. This makes the AP3303 to be a CC IN good choice in wide range output voltage application. Internal piecewise linear line compensation ensures constant output power limit over entire universal line voltage range. Applications Comprehensive protection features are included, such as brown out Switching AC-DC Adapter/Charger protection, cycle-by-cycle current limit, VCC Over Voltage Protection ATX/BTX Auxiliary Power (VOVP), Secondary-side Output OVP (SOVP) and UVP (SUVP), Set-Top Box (STB) Power Supply internal OTP, Over Load Protection (OLP) and pins fault protection. Open Frame Switching Power Supply Combined with Diodes Incorporateds synchronous controller APR347, the AP3303 system can achieve the higher power conversion efficiency and the better thermal performance. Features Quasi-Resonant Operation under all Line and Load Condition Non-Audible-Noise Quasi-Resonant Control High-Voltage Startup Embedded VCC LDO to Guarantee Wide Range V Voltage CC IN Low VCC Charge Current Reduces Standby Power in Output Short Situation Adaptive Burst Mode Operation with Output Voltage Adaptive Output Power Limit with Output Voltage Soft Start during Startup Process Frequency Fold Back for High Average Efficiency Constant Over Current Protection Secondary Winding Short Protection with FOCP Frequency Dithering for Reducing EMI V Maintain Mode CC Useful Pin Fault Protection: SENSE Pin Floating FB/Opto-Coupler Open/Short Comprehensive System Protection Feature: Programmable External OTP Over Load Protection (OLP) Brown In/Out Protection Secondary-Side OVP (SOVP) and UVP (SUVP) SSOP-9 (Type CJ) is Available Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See AP3303 Typical Applications Circuit CY1 L2 F1 T1 R25 CON1 Q3 BD1 Vo L1 C2 C5 C1 R11 AC D+ C3 C4 D- R19 C9 NTC1 D5 CC1 L3 R10 CC2 Q2 GND R2 U3 4 2 C12 D8 D9 C10 D6 DRISR VCC APR347 R14 R15 6 3 VDET GND 5 1 D7 VDD R13 AREF R20 C11 Q1 3 R6 C15 VCC ISENP PWR EN VBUS 4 DEM 6 C13 VCC IN GATE - R12 DN 9 R7 GND U4 HV DP 8 U1 AP43771 SENSE 1 R 4 CTRL 18 OCDRV CC1 R C6 R8 AP3303 CC2 7 IFB VFB OTP V5V VCC 2 FB GND U2 C20 RT1 5 C19 RT2 C16 C18 C8 C7 R22 Pin Descriptions Pin Number Pin Name Function 1 CTRL Programmable External Protection 2 FB Feedback. Directly Connected to the Opto-coupler 3 DEM Valley Detection for QR Control. Sample VOUT to Realize SOVP and SUVP Protection 4 VCC IN Wide Range Input Supply Voltage to Produce V CC 5 GND Signal Ground 6 GATE Gate Driver Output 7 VCC Supply Voltage of Driver and Control Circuits 8 SENSE Sense the Primary Current 9 HV High Voltage Input. Sense Line Voltage and Provide Startup Current to V CC 2 of 16 AP3303 May 2019 Diodes Incorporated www.diodes.com Document number:DS41016 Rev. 5 - 2 NEW PRODUCT