LTC3372

38

Rev. A

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TYPICAL APPLICATIONS

SWA

SWB

SWC

GND

FB1

EN1

ITH

SWD

FB2

EN2

TRACK/SS

RUN

PGOOD

RT

CT

PLL/MODE

SWE

FB3

EN3

SWH

SWG

SWF

C1 C2 C3

FB4

EN4

WDI

WDO

TEMP

RSTB

TG

BOOST

SW

BG

LTC3372

MTOP

MBOT

D1

4.7µF

10nF

3m

402k

649k

806k

LHV

1.5µH

22µF

464k

232k

47µF

309k

665k

22µF

162k

511k

47µF

0.01µF

100pF

3.3nF

5.11k

100k

47µF

330µF

10µF

×3

10µF

100k

L4

0.68µH

L1

0.68µH

L3

2.2µH

L2

2.2µH

10

1nF

0.1µF

5V

10A*

60V MAX

6V MIN

22µF

10µF

×3

10µF

22µF

3.3V

3A

2.5V

1A

1.2V

3A

1.8V

1A

47µF

×2

2.2µF

×2

3372 TA03a

MTOP: NTMFS5C670NL

MBOT: NVMFS5C645NL

LHV:XAL1010-152ME

D1: DFLS1100

*FULL LOAD IS EQUIVALENT TO SPECIFIED LOAD CURRENT

BURST EFFICIENCY

BURST LOSS

FCM EFFICIENCY

PULSE–SKIPPING

EFFICIENCY

FCM LOSS

PULSE–SKIPPING

LOSS

OUTPUT CURRENT (A)

0.0001 0.001

0.01

0.1

1

1020

0

10

20

30

40

50

60

70

80

90

100

0.1

1

10

100

1000

10000

3372 TA03b

100µs/DIV

5A/DIV

AC–COUPLED

100mV/DIV

3372 TA03c

HV Controller Efficiency and

Power Loss vs Output Current

HV Controller Forced Continuous

Mode Load Step

6V to 60V Input 5V/10A Output HV Buck Converter Plus Quad 1.2V/3A, 1.8V/1A, 2.5V/1A, and 3.3V/3A LV Regulators