MP9928—4V TO 60V SYNCHRONOUS STEP-DOWN CONTROLLER

MP9928 Rev. 1.0

www.MonolithicPower.com

23

5/20/2016

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

© 2016 MPS. All Rights Reserved.

TYPICAL APPLICATION CIRCUITS

M1

M2

100K

R2

37.4K

R1

SYNCO

EN/SYNC

680pF

C6

51K

R5

NS

R6

NS

C7

6V-60V

0.1uF

C8

0.007

R7

63.4K

R8

12K

R9

VOUT

5V / 7A

4.7uH

L2

4.7uF

C1B

4.7uF

C1A

10nF

C5

0

R11

0

R12

D1

2.2

R13

0.47uF

C1C

1uF

C4

VCC2

0

R3

VOUT

VOUT

VCC1

37.4K

R4

NS

C9

10

R14

220pF

C11

100K

R15

VIN

NS

R16

NS

R17

NS

C12

4.7uF

C3

220uF

C2B

22uF

C2A

VCC1

0

R19

0

R20

VIN

IN

FREQ

EN/SYNC

SYNCO

SS

ILIM

FB

CCM/AAM

SENSE-

SENSE+

PG

VCC2

BG

VCC1

SW

TG

BST

U1

MP9928

Figure 10: Application Circuit for 5V Output

M1

M2

100K

R2

37.4K

R1

SYNCO

EN/SYNC

220pF

C6

10K

R5

NS

R6

82pF

C7

13V-60V

0.1uF

C8

0.007

R7

169K

R8

12K

R9

VOUT

12V

15uH

L2

4.7uF

C1B

4.7uF

C1A

10nF

C5

0

R11

0

R12

D1

2.2

R13

0.47uF

C1C

1uF

C4

VCC2

0

R3

VOUT

VOUT

VCC1

37.4K

R4

NS

C9

10

R14

220pF

C11

100K

R15

VIN

NS

R16

NS

R17

NS

C12

4.7uF

C3

220uF

C2B

22uF

C2A

VCC1

0

R19

0

R20

VIN

IN

FREQ

EN/SYNC

SYNCO

SS

ILIM

FB

CCM/AAM

SENSE-

SENSE+

PG

VCC2

BG

VCC1

SW

TG

BST

U1

MP9928

R10

0

C10

150pF

Figure 11: Application Circuit for 12V Output