R2A20124ASP-W0 Ver la hoja de datos (PDF) - Renesas Electronics

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Fabricante

R2A20124ASP-W0

Synchronous Phase Shift Full-Bridge Control IC Series

Renesas Electronics 

R2A20124AFP/R2A20124ASP

Modified Points from R2A20121SP

 The swing level of the maximum output voltage is changed from VREF to VCC.

 Ramp sloping compensation circuit is added.

 Synchronous rectification control is possible to turned off at light load. (only R2A20124AFP)

 On/off control terminal for Remote is added. (only R2A20124AFP)

Illustrative Circuit

Preliminary

VIN

DC 12 V

DC 12 V

DC 12 V

DC 12 V

DC 12 V

Vbias

(DC 12 V)

VCC OUT OUT CS RAMP RAMP OUT OUT

-A -B

-SLP -C -D

SEC-CONT(∗1)

REMOTE(∗1) R2A20124AFP/ASP

VREF

OUT OUT

-E -F

COMP

FB(–)

CS- DELAY DELAY DELAY

PGND SGND RT SYNC SS OUT(∗1) -1

-2

-3

Note: ∗1. Only R2A20124AFP

R03DS0031EJ0300 Rev.3.00

Mar 11, 2011

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