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AP3783R Dataheets PDF



Part Number AP3783R
Manufacturers Diodes
Logo Diodes
Description PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER
Datasheet AP3783R DatasheetAP3783R Datasheet (PDF)

NEW PRODUCT AP3783R PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER Description Pin Assignments The AP3783R is a high frequency, high efficiency and high accuracy switching mode power supply controller to drive power MOSFET for 5V/2A battery charger/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). The system operating frequency reduces linear.

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NEW PRODUCT AP3783R PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER Description Pin Assignments The AP3783R is a high frequency, high efficiency and high accuracy switching mode power supply controller to drive power MOSFET for 5V/2A battery charger/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). The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM, and enters constant current mode when the load current equals to the maximum system output current. The AP3783R 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 AP3783R provides valley turn-on function and 3-Segment drive current to improve the power supply EMI performance. The AP3783R also has built-in fixed cable voltage drop compensation (8%, 4% and 2% of nominal system output voltage to meet various cables with different length and gauge) and adjustable line voltage compensation. The AP3783R achieves excellent regulation and high average efficiency, less than 2s startup time for 30mW standby power solution. When AP3783R is used with APR3415, good undershoot and efficiency performances can be achieved. The AP3783R is packaged in SOT26. Applications  Adapters/Chargers  Standby and Auxiliary Power Supplies (Top View) Pin 1 Mark CS 1 GND 2 VCC 3 6 CPC 5 DRI 4 FB SOT26 Features  Less than 30mW 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 20W 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. AP3783R Document number: DS37448 Rev. 5 - 2 1 of 17 www.diodes.com October 2015 © Diodes Incorporated NEW PRODUCT Typical Applications Circuit AP3783R FR1 DIN LIN RST1 C1 R1 + CIN1 + CIN2 RST2 D1 R0 Da + CVCC Ra U1 CCPC 1 CS CPC 6 2 GND 3 VCC DRI 5 FB 4 AP3783R Q1 RCS T1 Np Ns C2 R2 COUT + Na R4 RFB1 C4 U2 APR3415 DRAIN GND DRAIN GND VDET VCC DRISR AREF R3 C3 R5 5V/2A RFB2 CY1 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 AP3783R Document number: DS37448 Rev. 5 - 2 2 of 17 www.diodes.com October 2015 © Diodes Incorporated NEW PRODUCT Functional Block Diagram AP3783R VCC CS 0.83V 4 FB COMP OVP/SCP/OTP/ OCkP/Max tONP PFM tDELAY tONS Detector tONS tOFF Dynamic Response Timer Pro tDELAY t 256ms Dyn UV/OV UV/OV 3 Regulator & Bias UVLO 2 GND PFM VFB_REF EA Constant Voltage Control LL Mode RQ S CV_CTRL Valley _on 5 Driver DRI Line VLINE Compensation VCS_X VLOAD VCS_X Select UV Detect_on 1 CS VCS_REF Peak Current Control & LEB tONS Constant Current Control Vload VCS_X Low Pass Filter VCPC Cable Compensation 6 CPC Shutdown CC_CTRL RQ S t 256ms Light Load LL Mode Detection AP3783R Document number: DS37448 Rev. 5 - 2 3 of 17 www.diodes.com October 2015 © Diodes Incorporated AP3783R 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 Temper.


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