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AP3125L Dataheets PDF



Part Number AP3125L
Manufacturers Diodes
Logo Diodes
Description GREEN MODE PWM CONTROLLER
Datasheet AP3125L DatasheetAP3125L Datasheet (PDF)

NEW PRODUCT Description A Product Line of Diodes Incorporated AP3125A/V/L/R GREEN MODE PWM CONTROLLER Pin Assignments The AP3125A/V/L/R is a current mode PWM controller which is optimized for high performance, low standby power and cost effective offline flyback converters. The PWM switching frequency at normal operation is internally fixed (about 65kHz). In middle load, the IC will enter green mode to improve system efficiency with the help of frequency foldback. A minimum switching frequenc.

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NEW PRODUCT Description A Product Line of Diodes Incorporated AP3125A/V/L/R GREEN MODE PWM CONTROLLER Pin Assignments The AP3125A/V/L/R is a current mode PWM controller which is optimized for high performance, low standby power and cost effective offline flyback converters. The PWM switching frequency at normal operation is internally fixed (about 65kHz). In middle load, the IC will enter green mode to improve system efficiency with the help of frequency foldback. A minimum switching frequency (about 20kHz) is set to avoid the audible noise. In 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. Internal slope compensation allows more stable Peak-Current Mode control over wide range of input voltage and load conditions. Internal line compensation ensures constant output power limit over entire universal line voltage range. Comprehensive protection features are included, such as cycle-bycycle current limit (OCP), VCC Over Voltage Protection (VOVP), internal OTP, Over Load Protection (OLP) and pins’ fault protection. The versatile latch functions can be implemented using a minimal number of external components. (Top View) Pin 1 Mark GND 1 FB 2 CTRL 3 6 GATE 5 VCC 4 SENSE SOT26 Features  Very Low Start-up Current  Current Mode Control  Non-audible-noise Green-mode Control  Internal Slope Compensation  Soft Start During Startup Process  Frequency Fold Back for High Average Efficiency  Secondary Winding Short Protection with FOCP  Soft Switching for Reducing EMI  VCC Maintain Mode  Useful Pin Fault Protection: SENSE Pin Floating CTRL Pin Short to Ground FB/Opto-coupler Open/Short  Comprehensive System Protection Feature: VCC Over Voltage Protection (VOVP) Over Load Protection (OLP)  Optional Latch Mode for VOVP, OLP and CTRL Pin Protection  Mini Size Package of SOT26  Pin to Pin Compatible with AP3105NA/NV/NL/NR  Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) Applications  Switching AC-DC Adapter/Charger  ATX/BTX Auxiliary Power  Set-top Box (STB) Power Supply  Open Frame Switching Power Supply 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. AP3125A/V/L/R Document number: DS36660 Rev. 2 - 2 1 of 13 www.diodes.com July 2014 © Diodes Incorporated NEW PRODUCT F1 + ~ -~ ~ Typical Applications Circuit C2 R4 R5 C4 R2 R3 NTC C1 R7 VR1 NTC U1 VCC C3 GATE CTRL SENSE AP3125A/V/L/R FB GND R8 R9 C11 A Product Line of Diodes Incorporated AP3125A/V/L/R R6 C.


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