CS5308 datasheet(2/31 Pages) ONSEMI

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CS5308

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Figure 1. Application Diagram. 5.0 V to 1.7 V at 28 A, 335 kHz with 12 V Bias for Pentium) III Applications

Recommended Components:

L1: Coiltronics CTX15−14771 or T30−26 core with 3T of #16 AWG

L2: Coiltronics CTX22−15401 X1 or T50−52 with 5T of #16 AWG Bifilar

CINPUT: 2 × Sanyo Oscon 6SP680M (680 mF, 6.3 V)

COUT: 7 × Rubycon 6.3ZA1000M10x16 (1000 mF, 6.3 V)

CCERAMICS: 12 × Panasonic ECJ−3YB0J106K (10 mF, 6.3 V)

Q1−Q4: ON Semiconductor NTB85N03 (28 V, 85 A)

VID25

VID0

VID1

VID2

VID3

PWRGD

SIGGND

RLIM2

1.0 k

RLIM1

5.76 k

CREF

0.1 mF

RCSREF

20 k

SIGGND

CCSREF

0.01 mF

CSREF

RDRP1

11.5 k

CFBK2

470 pF

VFB

CAMP

3.9 nF

CCMP1

3.3 nF

CCMP2

0.1 mF

SIGGND

ROSC

39.2 k

SIGGND

CVCC

1.0 mF

R5V

1.0 W

+5.0 V

+12 V

CS5308

COMP

VFB

VDRP

REF

ILIM

VID25

VID0

VID1

VID2

VID3

PWRGD

CSREF

CS1

CS2

ROSC

LGND

VCCL

VCCH1

GATE(H)1

GATE(L)1

PGND

VCCL12

GATE(L)2

GATE(H)2

VCCH2

VTTPGD

VTTCT

VTT

SIGGND

CVTT

0.1 mF

RVTT

1.0 k

CVCCH1

1.0 mF

CVCC12

1.0 mF

CVCCH2

1.0 mF

CQ1

0.1 mF

GATE1

GATE2

CQ3

0.1 mF

GATE3

GATE4

L1 300 nH

CINPUT

Electrolytics

L2 825 nH

COUT

Electrolytics

CCER

Ceramics

L3 825 nH

SWNODE1

SWNODE2

CS1

CS2

RCS1

100 k

RCS2

100 k

CCS1

0.01 mF

CCS2

0.01 mF

RFBK1

6.49 k

RCMP1

5.62 k

VTT

VOUT

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