AP3603

[AP3603] AP3603 High Power Dual Output Step-Up DC-DC Controller 1. General Description The AP3603 is a dual output step-up DC-DC controller. The output voltage can be set up to 60V by an external feedback resistor. A wide input range of 6.4V to 20V is available, which is possible to realize a high power boost source from the battery or the other power sources. The AP3603 supports either 200W×2ch dual outputs or 400W×1ch dual phase single output. PWM switching frequency is set from 40kHz to 500kHz by an external resistor. As the protective functions, it has output over voltage protection and over current protection. The AP3603 is housed in a space-saving 20-pin HTSSOP package. 2. Features  Input Voltage Range 6.4 to 20V  Oscillation Frequency Setting Range 40k to 500kHz（Set by external resistor）  8V Gate Driver for External N-channel MOSFET（ON resistance : 3Ω)  Over Temperature Protection  Output Over Voltage Protection  Quasi-Foldback Over Current Protection  Accuracy of Feedback Voltage +3% /-2 % (Tj=-40～145℃)  Dual Output or Dual Phase Single Output Application is Selectable  Package 20-pin HTSSOP 1 A R7 R9 B C8 R8 C7 C9 R10 C R11 PWON R12 D 1 23456 Vin R1 C1 A FSYN RT FB1 CC1 GND1 SS CC2 FB2 PWON MDC 2 RSP1 RSN1 DRV1 GND2 VDD V8 V4 DRV2 RSN2 RSP2 3 C4 C5 C6 L1 D1 M1 M2 D2 Title Size A4 Date: File: L2 Num be r R2 2014/09/12 C:\Users\..\AP3603do_140912.SchDoc 45 CH-1 Vout R3 C2 B R4 CH-2 VoutC R5 C3 R6 Revision Sheet of Drawn By :...