SS9176CS-10 datasheet(8/12 Pages) SSC

No de pièce	SS9176CS-10

Description	Dual Synchronous DC/DC Controllers With Current Sharing Circuitry

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Fabricant	SSC [Silicon Standard Corp.]

Site Internet	http://www.siliconstandard.com

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SS9175/6

REFERENCE CIRCUITS

Current sharing application using SS9176CS

This current sharing circuit is implemented using

the SS9176CS. The dual phase MOSFETs

must be supplied from the same supply voltage (in

this case, from 12V). They can also be supplied from

a 5V supply voltage. As there is only a single output

voltage (1.4V in this case), the divided voltage is

fed back to the IN pin. The VCC supply voltage can

be

either

12V

or

5V,

depending

on

the

convenience of PCB layout, but VCC = 12V is

recommended. If VCC > 6.5V, the BSTC output is

fixed at 6V. This BSTC voltage is used as the

supply voltage for the bootstrap circuit’s diodes

input. A 10uF capacitor is recommended for BSTC

decoupling. A 1k resistor is connected from CL2+

to the MOSFET’s high-side voltage. This 1k

resistor is used to program the OCP level.

1.4v

PWRG

12v

VCC

DH1

DL1

BST1

PGND

IN1

COMP

PWRGD

CL2+

CL2-

DH2

DL2

BST2

BSTC

SS/ENB

GND

1uF

1k

1uF

7.5uH

450uF

50k

7.5uH

10uF

0.22uF

2.2pF

APPLICATION INFORMATION (cont.)

Rev.2.02 12/29/2003

PRELIMINARY

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SS9176CS-10 Fiches technique(PDF) 8 Page - Silicon Standard Corp.

SS9176CS-10 Fiches technique(HTML) 8 Page - Silicon Standard Corp.

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