AP39303 QUASI-RESONANT PWM SWITCHER Description Pin Assignments The AP39303 is a highly integrated power switcher with a built-in Quasi-Resonant (QR) PWM controller and a 700V high performance (Top View) power MOSFET. AP39303 is specially designed for offline power supply that requires ultra-low standby power, high-power density and comprehensive protection. Coordinating with secondary side USBPD D 1 16 S or quick charger controller to provide a Flyback charger solution. At no load or light load, the IC will enter the burst mode to minimize GND D 2 15 standby power consumption. The minimum switching frequency (typical: 24kHz) is set to avoid the audible noise. When the load 3 D SENSE 14 increases, the IC will enter QR mode with frequency foldback to improve system efficiency and EMI performance. The maximum 4 switching frequency (typical: 120kHz) is set to clamp the QR D VCC IN 13 frequency to reduce switching power loss. Furthermore, the frequency dithering function is built in to reduce EMI emission. 5 D 12 DEM The AP39303 provides an inner high-voltage start-up function through HV pin which can reduce the standby loss. Moreover, The NC 6 11 VCC AP39303 integrates a VCC LDO circuitry, allowing the LDO to regulate the wide range V to an acceptable value. This makes CC IN 10 FB the AP39303 to be a good choice in wide range output voltage application. HV 8 9 CTRL Internal piecewise linear line compensation ensures constant output power limit over entire universal line voltage range. HSOP-16 (Type SM) Comprehensive protection features are included, such as brown out protection, cycle-by-cycle current limit, VCC Over Voltage Protection (VOVP), Secondary-side Output OVP (SOVP) and UVP (SUVP), internal OTP, Over Load Protection (OLP) and pins fault protection. Applications Combined with Diodes Incorporateds synchronous controller Switching AC-DC Adapter/Charger APR347, AP39303 system can achieve the higher power conversion ATX/BTX Auxiliary Power efficiency and the better thermal performance. Set-Top Box (STB) Power Supply Open Frame Switching Power Supply Features Quasi-Resonant Operation under all Line and Load Condition Peak Current Mode Control DCM High-Voltage Startup Built-In 700V High Performance Power MOSFET 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 Non-Audible-Noise Quasi-Resonant Control Soft Start during Startup Process Frequency Fold Back for High Average Efficiency 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) HSOP-16 (Type SM) Package Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. AP39303 Typical Applications Circuit CY1 L2 F1 T1 R 25 CON1 Q3 BD1 Vo C2 C5 R11 L1 C1 AC D+ C3 C4 R10 D- D5 NTC1 R19 C9 CC1 CC2 Q2 GND R2 6 U3 4 C12 D8 D9 D6 C10 DRISR VCC APR347 3 2 R14 R15 GND VDET R20 5 1 VDD AREF R13 11 C 12 VCC ISENP PWR EN VBUS 13 DEM C13 1to 5 C15 VCC-IN R12 D DN 16 U4 S 8 GND HV R4 AP43771 DP 14 U1 SENSE 9 C14 OCDRV CC1 CTRL R18 R8 6 R9 C AP39303 CC2 IFB VFB OTP V5V 11 VCC 10 FB GND C20 RT1 15 U2 R16 C17 C18 RT2 C8 C7 R21 Pin Descriptions Pin Number Pin Name Function 1 to 5 D The Drain of Internal Power MOSFET 6 NC Suspended 8 HV High Voltage Input. Sense Line Voltage and Provide Startup Current to VCC 9 CTRL Programmable External Protection 10 FB Feedback. Directly Connected to the Opto-Coupler 11 VCC Supply Voltage of Driver and Control Circuits 12 DEM Valley Detection for QR Control. Sample V to Realize SOVP and SUVP Protection OUT 13 VCC IN Wide Range Input Supply Voltage to Produce VCC 14 SENSE Sense the Primary Current 15 GND Signal Ground 16 S The Source of Internal Power MOSFET 2 of 16 AP39303 November 2020 Diodes Incorporated www.diodes.com Document number:DS41017 Rev. 6 - 2 NEW PRODUCT