MPQ4480 – 36V, 6A, SYNC STEP-DOWN CONVERTER FOR AEC1-Q100 QUALIFIED

MPQ4480 Rev. 1.0

www.MonolithicPower.com

21

7/2/2019

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

© 2019 MPS. All Rights Reserved.

PGND

EN

IN

AGND

SW

FB

VIN

12V

L1

4.7µH

VCC

BST

C4

220nF

NC

C2A

22µF

+ C1

100µF

C1A

22µF

ILIM

C3

RGND

FREQ/SYNC

GATE

R1

R2

VDROP

1µF

R3

MPQ4480

40.2kΩ

10kΩ

52.3kΩ

+

C2

100µF

SYNC Input

C5

10pF

VCC

R5

R6

Polymer

Cap

VCC

R7

R8

NS

0

NS

0

VOUT

5V

(ESR<50mΩ)

3,15

11

23

12

7

10

4,8,9,14

25

22

18-21

24

2,16

6

1,5,13,17

Figure 11: VIN = 12V, VOUT = 5V, IOUT = 6A, fSW = 440kHz, without CC protection, only buck peak OCP

PGND

EN

IN

AGND

SW

FB

VIN

12V

L1

4.7µH

VCC

BST

C4

220nF

NC

C2A

22µF

+ C1

100µF

C1A

22µF

ILIM

C3

RGND

FREQ/SYNC

GATE

R1

R2

VDROP

USB_GND

1µF

R3

MPQ4480

40.2kΩ

6.2kΩ

60.4kΩ

C2

SYNC Input

C5

10pF

VCC

R5

R6

VCC

R7

R8

NS

0

NS

0

VOUT

5V

3,15

11

23

12

7

10

4,8,9,14

25

22

18-21

24

2,16

6

1,5,13,17

+

100µF

ESR<50mΩ

R7

R7

1kΩ

5.1kΩ

C2A

4.7µF

PWM Signal

3.3V,100kHz,

D=41.5%

Figure 12: VIN = 12V, VOUT = 1V to 11V (5V default), IOUT = 6A, fSW = 380kHz, wireless charging application