EV1499-D-00A – 16V, 500kHz, 5A PEAK STEP-DOWN CONVERTER

EV1499-D-00A Rev.1.0

www.MonolithicPower.com

2

7/24/2012

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

© 2012 MPS. All Rights Reserved.

EVALUATION BOARD SCHEMATIC

33k

R8

40.2k

R1

10

R5

13k

R2

C3

2

1

L1

C2A

C2B

C2C

33pF

C6

C1B

C1A

0

R6

10

R7

1

VOUT

1

GND

1

VIN

C4

100k

R3

39k

R4

NS

C5

1

VCC

1

EN/SYNC

22nF

C7

1

SS

1

GND

GND

VOUT

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

NS

D1

GND

FB

1

VIN

9

SW

8

BST

4

EN/SYNC

3

VCC

2

SS

10

MP1499GD

NC

5

U1

C1C

GND

EV1499-D-00A BILL OF MATERIALS

Qty

RefDes

Value

Description

Package

Manufacturer

Manufacturer P/N

2

C1A,C1B

22μF

Ceramic Cap., 25V,

X5R

1210

muRata

GRM32ER61E226KE15L

2

C2A,C2B

22μF

Ceramic Cap., 16V,

X5R

1206

muRata

GRM31CR61C226ME15L

2

C1C,

C2C

0.1μF

Ceramic Cap., 25V,

X7R

0805

muRata

GRM21BR71E104KA01L

2

C3,C4

0.1μF

Ceramic Cap., 16V,

X7R

0603

muRata

GRM188R71C104KA01D

C5

NS

1

C6

33pF

Ceramic Cap., 50V,

C0G

0603

muRata

GRM1885C1H330JA01D

1

C7

22nF

Ceramic Cap., 50V,

X7R

0603

muRata

GRM188R71H223KA01D

1

R1

40.2k

Thick Film Res., 1%

0603

Yageo

RL0603FR-0740K2L

1

R2

13k

Thick Film Res., 1%

0603

Yageo

RL0603FR-0713KL

1

R3

100k

Thick Film Res., 1%

0603

Yageo

RL0603FR-07100KL

1

R4

39k

Thick Film Res., 1%

0603

Yageo

RL0603FR-0739KL

1

R6

0Ω

Thick Film Res., 5%

0603

Yageo

RC0603FR-070RL

2

R5,R7

10Ω

Thick Film Res., 5%

0603

Yageo

RL0603FR-0710RL

1

R8

33k

Thick Film Res., 1%

0603

Yageo

RC0603FR-0733KL

D1

NS

1

L1

3.3μH

Inductor,DCR=17.2mΩ,

Is=11A

Wurth

744311330

1

U1

MP1499

GD

Synchronous Step-

Down Convert

QFN2×3

MPS

MP1499GD