www.recom-power.com

REV.: 0/2020

P-3

Evaluation Module

RPMH-0.5-EVM-1

OUTPUT VOLTAGE TRIMMING

continued on next page

Trim down

L4

C4

1210

C10

1206

C12

1210

R2

0603

L2 1206

C1

E1

E2

D1

E5

C5

A1-A2

A5,B5

TRIM

GND

GND

GND GND

V

OUT

V

IN

CTRL

SENSE

NC

SEQ

PGOOD

U1

RPMH-0.5

L1

L3 0805

C3

1210

C11

1210

C2

1210

C8

1206

C7

1210

R1

0603

C1

1210

C9

1210

C5

1210

C6

1206

R5

0603

C1

R4

0603

R6

0603

V

OUT

CTRL

V

IN

SEQ

SENSE

V

OUT

R9

0603

R10

0603

L9

L7 0805

L8 0603

L5

L6 1206

Schematic

Description

U1: RPMH-0.5 power module.

C1,C2,C3,C11,L1,L2,L3,L4,C4,C5,C12: allow placement of various sized components to test input filter design. The populated filter is designed to meet EN55032

class B

C6,C7,L5,L6,L7, L8, L9,C8,C9: allow placement of various sized components to test output filter design. The populated filter is designed to meet EN55032 class B

R5: connect 0

Ω resistor to disable the module. This resistor is not populated.

C10: sets soft-start time. Refer to RPMH-0.5 datasheet for more information.

R9: populated 100k

Ω resistor which is pulled up to VOUT. This is for output power good signal.

R10: this resistor is only populated for RPMH12-0.5-EVM-1, RPMH15-0.5-EVM-1, and

RPMH24-0.5-EVM-1.This limits the voltage of PGOOD signal to half the output voltage. Refer to RPMH-0.5 datasheet for more information.

R1: populated 0

Ω resistor for direct output voltage measurement. If sense is desired at a different location, for example after the filter or directly at the load),

desolder R1, and connect sense to the new measurement point.

R2: sense point for output voltage after the filter. To set sense point here, remove R1 and solder a 0

Ω resistor at R2.

R4 and R6: trim the output voltage. Refer to

„OUTPUT VOLTAGE TRIMMING“

Notes:

Note1: Grey colored components are not mounted

The RPMH-series offers the feature of trimming the output voltage over a range between -20% to +10% for lower output voltages and from

-40% to +10% for higher output voltages. This can be done by using external trim resistors. The values for the trim resistors in trim tables are

according to standard E96 values; therefore, the specified voltage may slightly vary.

+Vout

Trim

GND

Trim

Trim up

+Vout

Trim

GND

Trim

(R6)

(R4)