LTC3738 데이터 시트보기 (PDF) - Linear Technology

부품명

상세내역

제조사

LTC3738

3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning

Linear Technology 

LTC3738

TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise noted.

Maximum Current Threshold

Mismatch vs Temperature

3.0

2.5

2.0

1.5

1.0

0.5

0

–45 –30 –15 0 15 30 45 60 75 90

TEMPERATURE (°C)

3738 G19

Shed Mode at 1A,

Light Load Current

VOUT

10mV/DIV

VSW1

5V/DIV

VSW2

5V/DIV

VSW3

5V/DIV

VIN = 12V

2µs/DIV

VOUT = 1.5V

VFCB = VCC

FREQUENCY = 210kHz

3738 G21

(VAVP – VIN+) vs

(VSENSE+ – VSENSE–)

180

135

90

45

0

–45

–15

0

15

30

45

VSENSE+ – VSENSE– (mV)

60

3738 G20

Pulse Skip Mode at 1A,

Light Load Current

VOUT

10mV/DIV

VSW1

5V/DIV

VSW2

5V/DIV

VSW3

5V/DIV

VIN = 12V

2µs/DIV

VOUT = 1.5V

VFCB = OPEN

FREQUENCY = 210kHz

3738 G22

Continuous Mode at 1A,

Light Load Current

VOUT

10mV/DIV

VSW1

5V/DIV

VSW2

5V/DIV

VSW3

5V/DIV

VIN = 12V

2µs/DIV

VOUT = 1.5V

VFCB = GND

FREQUENCY = 210kHz

3738 G23

Load Transient with AVP

VOUT

50mV/DIV

∆IOUT

100A STEP

dI/dt > 200A/µs

80mV

INTEL

SPEC

VIN = 12V

VOUT = 1.35V

COUT = 10 × 330µF/2.5V

SANYO TPE POSCAP

+ 18 × 22µF/X5R CERAMIC

3738 G24

3738f

7

Share Link: