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AP3783 Dataheets PDF



Part Number AP3783
Manufacturers Diodes
Logo Diodes
Description PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER
Datasheet AP3783 DatasheetAP3783 Datasheet (PDF)

AP3783 PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER Description Pin Assignments The AP3783 is a high performance AC/DC power supply controller for battery charger and adapter applications. The controller regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM). (Top View) Pin 1 Mark The AP3783 provides accurate constant voltage (CV), constant current (CC) and outstanding dynamic perf.

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AP3783 PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER Description Pin Assignments The AP3783 is a high performance AC/DC power supply controller for battery charger and adapter applications. The controller regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM). (Top View) Pin 1 Mark The AP3783 provides accurate constant voltage (CV), constant current (CC) and outstanding dynamic performance without requiring an opto-coupler. It also eliminates the need of loop compensation circuitry while maintaining stability. The AP3783 provides valley turn-on function, operating frequency Jitter function (about 5.5% frequency change every 256μs) from light to full load range and 3-segment drive current to improve the power supply EMI performance. The AP3783 also has built-in fixed cable voltage drop compensation (10%, 7% and 4% of nominal system output voltage to meet various cables with different length and gauge) and adjustable line voltage compensation. The AP3783 is packaged in SOT26. Applications  Adapters/Chargers  LED Lighting  Standby and Auxiliary Power Supplies CS 1 GND 2 VCC 3 6 CPC 5 DRI 4 FB SOT26 Features  Less than 75mW Standby Power Consumption  Meet Efficiency Requirement of COC Trier2  Valley Turn-on to Reduce Switching Loss and Improve EMI  Piece-wise Frequency Reduction to Enhance Conversion Efficiency and Suppress Audio Noise  Over Voltage Protection (OVP)  Over Temperature Protection (OTP)  Short Circuit Protection (SCP) with Hiccup  3-Segment Drive Current for Radiative EMI Suppression  Operating Frequency Jitter Function for Conductive EMI Suppression  Drive MOSFET for 5W to 30W Battery Charger/Adapter Applications  SOT26 SMD Package Comply with Level 3 of IPC/JEDEC J-STD- 033A  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) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. AP3783 Document number: DS37429 Rev. 6 - 2 1 of 17 www.diodes.com December 2015 © Diodes Incorporated Typical Applications Circuit AP3783 FR1 DIN LIN RST1 C1 R1 + CIN1 + CIN2 RST2 D1 R0 Da + CVCC Ra C2 R2 T1 Ds Np Ns ++ COUT1 COUT2 R DUMMY 12V/1.5A 5V/2A Na 1 CS U1 CCPC CPC 6 2 GND DRI 5 Dg 3 VCC FB 4 Rg AP3783 Q1 RCS RFB1 CY1 RFB2 Pin Descriptions Pin Number 1 2 3 4 5 6 Pin Name CS GND VCC FB DRI CPC Function The CS is the current sense pin of the IC. The IC will turn off the power MOSFET according to the voltage on the CS pin The ground of the controller The VCC pin supplies the power for the IC. In order to get the correct operation of the IC, a capacitor with low ESR should be placed as close as possible to the VCC pin The CV and CC regulation are realized based on the voltage sampling of this pin Output pin to drive external MOSFET A capacitor about 50nF should be connected to this pin. The voltage of CPC pin is linear to load of the system and it is used for the functions of cable voltage drop compensation and audio noise suppression AP3783 Document number: DS37429 Rev. 6 - 2 2 of 17 www.diodes.com December 2015 © Diodes Incorporated Functional Block Diagram AP3783 0.05V 4 FB COMP OVP OCkp Output short OTP PFM OSC tOSC tONS Detector tONS Pro VCC 3 Regulator & Bias UV UV Dynamic Response Dyn VLOAD VFB_REF Constant Voltage Control Cable compensation VLOAD Line Comp. 1 CS tONS VCS_D/L/M/H Peak Current Control LEB Frequency Dither VCSN Select VLOAD UV Detect ON Constant Current Control VCS_D/L/M/H CPC VLOAD 6 CPC CV_ctrl RQ S Detect ON Detect pulse tOSC Shutdown Pre_Shutdown RQ S CC_CTRL UVLO 2 GND PFM Valley ON 5 Driver DRI AP3783 Document number: DS37429 Rev. 6 - 2 3 of 17 www.diodes.com December 2015 © Diodes Incorporated AP3783 Absolute Maximum Ratings (Note 4) Symbol VCC VCS, VCPC VFB ISOURCE TJ TSTG TLEAD θJA ESD Parameter Supply Voltage Voltage on CS, CPC Pin FB Input Voltage Source Current from OUT Pin Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) Thermal Resistance (Junction to Ambient) ESD (Human Body Model) ESD (Charged Device Model) Rating -0.3 to 35 -0.3 to 7 -0.4 to 10 Internally Limited -40 to +150 -65 to +150 +300 200 6000 400 Unit V V V A °C °C °C °C/W V V Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under .


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