Diodes AP3981B User Manual Download Page 3 | Manualshive

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Diodes AP3981B User Manual Download Page 3

Universal AC input, Primary Side Regulation

AP3981B 12V-500mA EV2 Board User Guide

AP3981B EV2

Page 3 of 12

11 - 12 - 2019

Rev1.0

www.diodes.com

Evaluation Board Schematic

Figure 3:

Evaluation Board Schematic

Evaluation Board PCB Layout

Figure4:

PCB Board Layout Top View

Figure5:

PCB Board Layout Bottom View

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Summary of Contents for AP3981B

Page 1: ...ng stay at Valley on region so that will improve power converting efficiency EMI performance the 82 Efficiency can be reached at full load During the burst mode operation and Low start up operating qu...

Page 2: ...ters 1 Primary Inductance Pin3 Pin5 all other windings are open Lp 1 75mH 7 1KHz EE16C Ae 19mm 2 NO Winding NAME TERMINAL NO WINDING START FINISH WIRE TURNS Layers 1 Shield 4 GND NC 0 16mm x 3 15Ts 1...

Page 3: ...12V 500mA EV2 Board User Guide AP3981B EV2 Page 3 of 12 11 12 2019 Rev1 0 www diodes com Evaluation Board Schematic Figure 3 Evaluation Board Schematic Evaluation Board PCB Layout Figure4 PCB Board La...

Page 4: ...Supplier P N Digi key 0 1 1 BD1 ABS10 Rectifier Bridge Diodes 2 2 C1 C2 4 7uF 400V electrolytic Aishi Electro 3 1 C3 2 2uF 50V electrolytic Aishi Electro 4 1 C4 1nF 200V 1206 Holy Stone 5 1 C6 1nF 100...

Page 5: ...50Hz Note Pin w 58 5W 69 2mW At no loading Figure 6 The Input Standby Powerwith at different AC input Input power Efficiency at different loading AC input Efficiency Eff_avg at four conditions 10 25 5...

Page 6: ...n AC input Voltage 90VAC 60Hz 115VAC 60Hz 230VAC 50Hz 265VAC 50Hz Note 12 00Vo 12 09V 0 5A 12 127V 0 5A 12 177V 0 5A 12 183V 0 5A 0 4 1 Cross Load Regulation at nominal line AC input voltage AC input...

Page 7: ...1B EV2 Page 7 of 12 11 12 2019 Rev1 0 www diodes com System main switching Voltage Stress on AP3981B Pin 5 6 Figure 10 AP3981C Vds at FL at 264 Vac Vds 551Vp p System Voltage Stress across on D3 Catho...

Page 8: ...tem output Ripple performance Figure 12 The Ripple at 90Vac_in Vpp 112 5mv FL Figure 13 The Ripple at 264Vac_in Vpp 58mv FL System Dynamic Response performance Figure 14 90VAC Load level 0 0 5A Vout 1...

Page 9: ...System Dynamic Response performance Figure 16 90VAC Load level 0 0 5A Vout 11 4 12 47V Figure 17 264VAC Load level 0 0 5A Vout 11 40 12 47V Frequency 100ms 100mS Slew rate 0 25A us Frequency 100ms 100...

Page 10: ...3 MHz 31 45 18 54 1 Quasi Peak 11 3733617927 MHz 38 94 21 05 2 Average 12 4388782936 MHz 31 04 18 95 1 Quasi Peak 15 177795402 MHz 38 07 21 92 Date 4 MAR 2019 13 06 29 150 kHz 30 MHz 6DB RBW 9 kHz MT...

Page 11: ...mary Side Regulation AP3981B 12V 500mA EV2 Board User Guide AP3981B EV2 Page 11 of 12 11 12 2019 Rev1 0 www diodes com Please see the recommand Application note for reference web page http www diodes...

Page 12: ...e or more United States international or foreign patents pending Product names and markings noted herein may also be covered by one or more United States international or foreign trademarks This docum...

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