SiC437AED-T1-GE3 datasheet(2/25 Pages) VISHAY

Part #	SiC437AED-T1-GE3

Description	Synchronous Buck Regulators 28 V Input, 12 A (SiC437) and 8 A (SiC438)

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Manufacturer	VISHAY [Vishay Siliconix]

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2 / 25 page

SiC437, SiC438

www.vishay.com

Vishay Siliconix

S18-0030-Rev. B, 15-Jan-18

2

Document Number: 75921

For technical questions, contact: powerictechsupport@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

PIN CONFIGURATION

Fig. 3 - SiC43x Pin Configuration

PIN DESCRIPTION

PIN NUMBER

SYMBOL

DESCRIPTION

1, 2, 22, 26

VIN

Input voltage

3, 4, 13, 27

PGND

Power signal return ground

5 to 9

SW

Switching node signal; output inductor connection point

10, 11

GL

Low side power MOSFET gate signal

12

VDRV

Supply voltage for internal gate driver. Connect a 2.2 μF decoupling capacitor to PGND

14

PGOOD

Power good signal output; open drain

15

VDD

Supply voltage for internal logic. Connect a 1 μF decoupling capacitor to AGND

16, 25

AGND

Analog signal return ground

17

FB

Output voltage feedback pin; connect to VOUT through a resistor divider network.

18

VOUT

Output voltage sense pin

19

EN

Enable pin

20

MODE 2

Connect a resistor to VDD to set the soft start timing at 9 ms and current limit level;

connect a resistor to AGND to set the soft start timing at 4.5 ms and current limit level

21

MODE 1

Connect a resistor to VDD for CCM and switching frequency setting;

connect a resistor to AGND for DCM and switching frequency setting

23

BOOT

Bootstrap pin; connect a capacitor to PHASE pin for HS power MOSFET gate voltage supply

24

PHASE

Switching node signal for bootstrap return path

ORDERING INFORMATION

PART NUMBER

PART

MARKING

MAXIMUM

CURRENT

VDD, VDRV

LIGHT LOAD

MODE

JUNCTION

TEMPERATURE

RANGE

PACKAGE

SiC437AED-T1-GE3

SiC437A

12 A

Internal

Ultrasonic

-40 °C to +125 °C

PowerPAK® MLP44-24L

SiC437BED-T1-GE3

SiC437B

Power saving

SiC437CED-T1-GE3

SiC437C

External

Ultrasonic

SiC437DED-T1-GE3

SiC437D

Power saving

SiC438AED-T1-GE3

SiC438A

8 A

Internal

Ultrasonic

SiC438BED-T1-GE3

SiC438B

Power saving

SiC438CED-T1-GE3

SiC438C

External

Ultrasonic

SiC438DED-T1-GE3

SiC438D

Power saving

11 GL

12 V

DRV

13 P

GND

14 P

GOOD

15 V

DD

16 A

GND

17 FB

P

GND 4

P

GND 3

V

IN 2

V

IN 1

4 P

GND

3 P

GND

2 V

IN

1 V

IN

GL 11

V

DRV 12

P

GND 13

P

GOOD 14

V

DD 15

A

GND 16

FB 17

25

A

GND

26

V

IN

27

P

GND

28

GL

Pin 1

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