AP3118 HIGH-PERFORMANCE MULTI-MODE PWM CONTROLLER Description Pin Assignments The AP3118 is a Current Mode PWM controller specially designed for offline power supply that requires ultra-low standby power, high- (Top View) power density and comprehensive protection. Coordinating with secondary USB PD controller, which can provide a total USB PD solution. The PWM switching frequency at normal operation is internally fixed (about 65kHz). At middle load, the IC will enter green mode, and the switching frequency will smoothly decrease along with the decreasing load. A minimum switching frequency (about 25kHz) is set to avoid the audible noise. AP3118 supports transient peak power excursion. At peak load, the frequency will be increased from 65kHz to 120kHZ to meet the requirement of output power. The duration time is internally set to 30ms. At no load or light load, the IC will enter the burst mode to minimize standby power. Furthermore, the frequency dithering function is built-in to reduce EMI emission in normal and green mode. The AP3118 provides an inner high-voltage start-up function through HV pin which can reduce the standby loss. The HV pin also realizes SSOP-9 (Type CJ) X-CAP discharge function. When an X-CAP is connected to a system, it will discharge the X-CAP when the AC line voltage is off automatically without the need for extra discharge resistors. The AP3118 integrates a VCC LDO circuitry, allowing the LDO to regulate the wide range V to an acceptable value. This makes CC IN the AP3118 a good choice in wide range output voltage application. Applications Switching AC-DC Adapter/Charger There are also versatile system protections provided by AP3118, such as secondary side OVP, secondary side UVP, constant output Open Frame Switching Power Supply current limit, cycle-by-cycle current limit (OCP), brown-out protection, programmable external OTP, etc. Features Current Mode Control High-Voltage Startup Frequency Fold Back for High Average Efficiency 130k Maximum Frequency for Peak Load Two Levels Timer Control for OLP and SCP Audible Noise Free Green-Mode Control Embedded VCC LDO to Guarantee Wide Range V Voltage CC IN Constant Output Current in Output Short Situation Low VCC Charge Current Reduces Standby Power in Output Short Situation Internal Slope Compensation Soft Start During Startup Process V Maintain Mode CC X-CAP Discharge Function Precise Secondary Side OVP and UVP Programmable External OTP Brown-Out Protection Overload Protection FOCP and SSCP Protection Useful Pin Fault Protection 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 AP3118 Typical Applications Circuit CY1 Q2 USB1 Vo L1 F1 DD1111 R 17 CC1 T1 D1 D4 C1 C2 C5 R11 C10 C11 C21 CX C9 AC R19 D2 D3 R10 GND D5 NTC1 R15 D12 R16 D8 D6 D9 Z1 R22 R20 C3 R23 C22 R24 R25 C12 C13 D7 R21 Q1 R13 GATE CC1 VBUS 3 VCC R6 4 6 DEM VCC-IN GATE R12 U1 VDD USB PD 9 HV R7 AP3118 C14 C15 Controller U3 8 SENSE 1 VSS R4 CTRL R8 R9 C6 IS+ IS- VFB CATH IFB 7 2 C 4 18 FB R VCC RT C17 C19 C16 GND U2 5 C18 R27 C20 R14 R28 R 26 D10 C8 C7 Pin Descriptions Pin Name Function 1 CTRL Programmable External Protection 2 FB Feedback. Directly Connected to the Opto-coupler 3 DEM Sample V to Realize SOVP and SUVP Protection OUT 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 17 AP3118 July 2018 Diodes Incorporated www.diodes.com Document number: DS39915 Rev. 5 - 2 NEW PRODUCT