MPQ2918 – 4V - 40V, CURRENT MODE, SYNC, STEP-DOWN CONTROLLER

MPQ2918 Rev. 1.01

www.MonolithicPower.com

28

8/17/2017

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2017 MPS. All Rights Reserved.

TYPICAL APPLICATION CIRCUITS

VIN

M1

M2

100kΩ

R2

45.3kΩ

R1

16V

16V

SYNCO

EN/SYNC

IN

1

FREQ

10

EN/SYNC

2

SYNCO

13

SS 6

ILIMIT 12

FB 8

CCM/AAM

9

SENSE- 14

SENSE+ 15

PG

11

VCC2

3

BG 17

VCC1

4

SW 18

TG 19

BST 20

U1

MPQ2918GF

6V-40V

0.1µF

C8

16V

4.7µH

L1

10nF

C7

0Ω

R11

0Ω

R12

D1

1N4148WS

2.2Ω

R13

0.47µF

C1

PG

1µF

C2

VCC2

0Ω

R3

VOUT

VCC1

10

R14

220pF

C11

100kΩ

R15

VIN

100kΩ

R16

4.7µF

C3

VCC1

100V

PGND

GND

NS

R17

Note: Thermal pad should connect to PGND and SGND

1

3

JP2

VCC1

DFLS

160

D2

4.7µF

C1C

100V

4.7µF

C1B

100V

C1A

63V

47µF

45.3kΩ

R4

NS

C4

1

2

3

JP1

CCM

AAM

VCC1

680pF

C6

51kΩ

R5

NS

C7

0.007Ω

R7

63.4kΩ

R8

12kΩ

R9

VOUT

5V/7A

NS

R10

NS

C10

NS

C9

VOUT

68µF

COUT1

16V

68µF

COUT2

16V

22µF

COUT3

16V

COUT4

NS

10Ω

R18

0Ω

R19

0Ω

R20

Figure 12: 5V Output Application Circuit for TSSOP Package

VIN

M1

M2

R2

R1

16V

16V

SYNCO

EN/SYNC

IN

1

FREQ

10

EN/SYNC

2

SYNCO

13

SS 6

ILIMIT 12

FB 8

CCM/AAM

9

SENSE- 14

SENSE+ 15

PG

11

VCC2

3

BG 17

VCC1

4

SW 18

TG 19

BST 20

U1

MPQ2918GF

16V-40V

0.1µF

C8

16V

15µH

L1

10nF

C7

R11

R12

D1

1N4148WS

R13

0.47µF

C1

PG

1µF

C2

VCC2

R3

VOUT

VCC1

R14

220pF

C11

R15

VIN

R16

4.7µF

C3

VCC1

100V

PGND

GND

NS

R17

Note: Thermal pad should connect to PGND and SGND

1

3

JP2

VCC1

DFLS

160

D2

4.7µF

C1C

100V

4.7µF

C1B

100V

C1A

63V

47µF

45.3kΩ

R4

NS

C4

1

2

3

JP1

CCM

AAM

VCC1

220pF

C6

10kΩ

R5

82pF

C7

0.007Ω

R7

169kΩ

R8

12kΩ

R9

VOUT

12V/7A

0Ω

R10

150pF

C10

NS

C9

VOUT

220µF

COUT1

16V

22µF

COUT2

16V

10Ω

R18

0Ω

R19

0Ω

R20

Figure 13: 12V Output Application Circuit for TSSOP Package