LTC3732CUHF View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC3732CUHF

3-Phase, 5-Bit VID, 600kHz, Synchronous Buck Switching Regulator Controller

Linear Technology 

TYPICAL PERFOR A CE CHARACTERISTICS

LTC3732

Error Amplifier Gain-Phase

40

180

35

135

30

90

25

45

20

0

15

–45

10

RL = 10k AC LOAD

5

100

1k

10k

100k

FREQUENCY (Hz)

–90

–135

1M

3732 G18

Shed Mode at 1Amp, Light Load

Current (Circuit of Figure 14)

Differential Amplifier Gain-Phase

0

0

–3

–45

–6

–90

–9

–135

–12

–180

–15

0001

0.01

0.1

1

FREQUENCY (MHz)

–225

10

3732 G19

Burst Mode at 1Amp, Light Load

Current (Circuit of Figure 14)

VOUT

AC, 20mV/DIV

VSW1

10V/DIV

VSW2

10V/DIV

VSW3

10V/DIV

VIN = 12V

4µs/DIV

VOUT = 1.5V

VFCB = VCC

FREQUENCY = 250kHz

3732 G20

Continuous Mode at 1Amp, Light

Load Current (Circuit of Figure 14)

VOUT

AC, 20mV/DIV

VSW1

10V/DIV

VSW2

10V/DIV

VSW3

10V/DIV

VIN = 12V

4µs/DIV

VOUT = 1.5V

VFCB = 0V

FREQUENCY = 250kHz

3732 G22

VOUT

AC, 20mV/DIV

VSW1

10V/DIV

VSW2

10V/DIV

VSW3

10V/DIV

VIN = 12V

4µs/DIV

VOUT = 1.5V

VFCB = OPEN

FREQUENCY = 250kHz

3732 G21

Transient Load Current Response: 0Amp

to 50Amp (Circuit of Figure 14)

VOUT

AC, 20mV/DIV

IL

20A/DIV

VIN = 12V

20µs/DIV

VOUT = 1.5V

VFCB = VCC

FREQUENCY = 250kHz

3732 G23

3732f

7

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