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6

IRDCiP2001-B

Table 2 - Reference Design Bill of Materials

Fig. 6 - R

Adjusting the Over-Current Limit

R7 & R8 are the resistors used to adjust the over-current trip point. The trip point is a function of the controller and

corresponds to 165% of the output current indicated on the x-axis of Fig. 6. For example, selecting a resistance of 1.5K

at each phase will set the trip point to 165% of 15A, or 24.75A. The trip point for each phase on the demoboard is currently

set to 165% of 20A, or 33A.

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

10

11

12

13

14

15

16

17

18

19

20

Output Current (A)

Designator

Value 1

Value 2

Type

Tolerance

Package

Mfr.

Mfr. Part No.

C1

0.022uF

50V

X7R

10%

0805

TDK

C2012X7R1H223K

C2 - C11, C27, C30 - C32

10.0uF

16V

X5R

10%

1210

TDK

C3225X5R1C106K

C16, C22, D1 - D3, R3, R19

-

-

-

-

-

-

-

C17, C19, C20, C23

100uF

6.3V

X5R

10%

2220

TDK

C5750X5R0J107K

C28

22.0pF

50V

COG

5%

0805

TDK

C2012COG1H220J

C33

0.010uF

50V

X7R

10%

0805

TDK

C2012X7R1H103K

Cx

4700pF

50V

X7R

10%

0603

TDK

C1608X7R1H472K

L1 - L3

0.54uH

27A

Ferrite

20%

SMT

Panasonic

ETQP6F0R6BFA

R1, R2

1K

1/8W

Thick film

5%

0805

ROHM

MCR10EZHJ102

R10 - R12, R14

0

1/8W

Thick film

<50m

0805

ROHM

MCR10EZHJ000

R6, R15 - R17

10K

1/8W

Thick film

5%

0805

ROHM

MCR10EZHJ103

R4

51K

1/8W

Thick film

5%

0805

ROHM

MCR10EZHJ513

R5, R7, R8

2K

1/8W

Thick film

5%

0805

ROHM

MCR10EZHJ202

Rx

51

1/10W

Thick film

5%

0603

KOA

RM73B1J510J

S1

SPST

6 position

Switch

-

SMT

C&K Components

SD06H0SK

ST1 - ST4

4-40

-

-

-

-

Keystone

8412

U1

-

-

PWM controller

0 - 70°C

SOIC20

Intersil

HIP6311CB

U2 - U4

-

-

DC-DC

-

11 x 11 x 3mm

IR

IP2001