AP39811 PRIMARY SIDE REGULATED POWER SWITCHER FOR SLANT IV CURVE Description Pin Assignments The AP39811 is a high performance power switcher integrated with a primary side regulation controller and an integrated N-channel power (Top View) MOSFET for the application of shaver charger. It is easy to achieve a targeted slant IV curve without an opto-coupler and secondary control FB 1 7 GND circuitry. A resistor connected between FB pin and CPR pin is introduced to adjust the slew rate of the slant IV curve. CPR 2 The AP39811 operates in Pulse Frequency Modulation (PFM) mode VCC 3 6 DRAIN and peak current Amplitude Modulation (AM) mode to form a fine tune frequency curve within the whole power range. Therefore, AP39811 SOURCE 5 DRAIN 4 can achieve high average efficiency and avoid audible noise. The AP39811 provides comprehensive protections without additional SO-7 circuitry. It contains V over voltage protection, output over voltage CC protection, XFMR anti-saturation protection, bulk-cap open protection, open loop protection, over temperature protection, etc. Applications The AP39811 is available in SO-7 package. Shaver Charger Features Primary Side Control for Eliminating Opto-Coupler Built-In 650V Power MOSFET Slant IV Curve Control 75mW No-Load Input Power Flyback Topology in DCM Operation External Adjustable Line Compensation for CC Multiple AM/PFM Control Mode to Improve Audio Noise and Efficiency Frequency Jitter to Improve System EMI Valley-On for the Higher Efficiency and Better EMI Behavior Multiple Protections: Over Voltage Protection (OVP) Bulk-Cap Open Protection Transformer Saturation Protection (TSP) via Primary Peak Current Limitation Internal Over Temperature Protection (OTP) SO-7 Package 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 AP39811 Typical Applications Circuit L1 RF1 DB1 R1 AC T1 C1 C2 R2 C3 R3 D3 VOUT R4 L2 D1 R5 R14 C5 R15 C6 R7 D2 R6 GND R8 R9 R10 R11 CY1 1 U1 2 FB CPR AP39811 5,6 DRAIN 3 VCC 4 SOURCE C4 GND R12 R13 7 Pin Descriptions Pin Number Pin Name Function Connect to the auxiliary winding through a resistor divider network, used as a multi-function pin to FB realize output voltage detection for CV control, t detection for CC control, line voltage sense for 1 ONS line compensation, and cable compensation as well. CPR A resistor is connected between FB pin and CPR pin to adjust slant-IV curve. 2 3 VCC The power supply for the IC. SOURCE SOURCE terminal of the integrated MOSFET. The primary side current is sensed through this pin. 4 DRAIN DRAIN terminal of the integrated MOSFET. 5, 6 GND Signal ground. Current return for driver and control circuits. 7 2 of 18 AP39811 June 2019 Diodes Incorporated www.diodes.com Document number: DS39992 Rev. 5 - 2 NEW PRODUCT