LTC2977 datasheet(15/138 Pages) AD

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LTM4664A

Rev. 0

For more information www.analog.com

TYPICAL PERFORMANCE CHARACTERISTICS

0.9V Individual Single Output

1st Stage = 100kHz,

2nd Stage = 200kHz,

Final 25A/30A Stages = 250kHz,

EXTVCC = 5V

1.5V Individual Single Output

1st Stage = 100kHz,

2nd Stage = 200kHz,

Final 25A/30A Stages = 350kHz,

EXTVCC = 5V

1V Individual Single Output

1st Stage = 100kHz,

2nd Stage = 200kHz,

Final 25A/30A Stages = 250kHz,

EXTVCC = 5V

1.2V Individual Single Output

1st Stage = 100kHz,

2nd Stage = 200kHz,

Final 25A/30A Stages = 250kHz,

EXTVCC = 5V

54V Input, 2-Phase 50A Single Output

1st Stage = 100kHz,

2nd Stage = 200kHz,

Final 25A/30A Stages = 350kHz,

EXTVCC = 5V

54V Input Voltage Change,

No Load

54V Input Voltage Change,

Load 25A Each

Dual Output Tracking

Start-Up/Shutdown

OUTPUT CURRENT (A)

4664A G01

54V INPUT

48V INPUT

36V INPUT

30V INPUT

OUTPUT CURRENT (A)

4664A G02

54V INPUT

48V INPUT

36V INPUT

30V INPUT

OUTPUT CURRENT (A)

4664A G03

54V INPUT

48V INPUT

36V INPUT

30V INPUT

OUTPUT CURRENT (A)

4664A G04

54V INPUT

48V INPUT

36V INPUT

30V INPUT

4664A G05

1.5V OUTPUT

1.2V OUTPUT

1V OUTPUT

0.9V OUTPUT

OUTPUT CURRENT (A)

VIN 30V TO 54V

TRANSIENT

20V/DIV,

50ms/DIV

FIRST STAGE

SWITCH 20V/DIV

SECOND STAGE

SWITCH 20V/DIV

FINAL 25A/30

STAGES

OUTPUT 1V/DIV

4664A G06

54V TO 1V, NO LOAD

4:1 DIVIDER: FIRST STAGE 100kHz,

SECOND STAGE 200kHz,

FINAL 25A/30A STAGES 250kHz

VIN 30V TO 54V

TRANSIENT

20V/DIV,

50ms/DIV

FIRST STAGE

SWITCH 20V/DIV

SECOND STAGE

SWITCH 20V/DIV

FINAL 25A/30A

STAGES

OUTPUT 1V/DIV

4664A G07

54V TO 1V, 25A LOAD EACH

4:1 DIVIDER: FIRST STAGE 100kHz,

SECOND STAGE 200kHz,

FINAL 25A/30A STAGES 250kHz

VOUTC0 = 1V,

VOUTC1 = 1.5V

500mV/DIV,

2ms/DIV

IOUT0

5A/DIV

RUN_C

5V/DIV

4664A G08

48VIN, 10A LOAD ON VOUT0, NO LOAD ON VOUTC1,

TON_RISE 0 = 3ms, TON_RISE 1 = 4.5ms,

TOFF_DELAY 1 = 0ms, TOFF_DELAY 0 = 1.5ms

TOFF_FALL 1 = 4.5ms, TOFF_FALL 0 = 3ms,

ON_OFF_CONFIG

n = 0x1E

LTC2977 Datasheet(PDF) 15 Page - Analog Devices

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