cui.com

date 01/10/2022

page 2 of 8

CUI Inc

│ SERIES: PCM-400 │ DESCRIPTION: AC-DC POWER SUPPLY

INPUT

parameter

conditions/description

min

typ

max

units

voltage

90

264

Vac

frequency

47

63

Hz

current

at 90 Vac, full load

8

A

inrush current

at 115 Vac, cold start

at 230 Vac, cold start

35

70

A

A

leakage current

at 120 Vac

at 240 Vac

300

500

μA

μA

power factor correction

at 230 Vac, full load

0.9

remote ON/OFF

designated as INH on Pin 4 of CN1, requires a low

signal to inhibit output

input fuse

T8 A/250 V on the input

OUTPUT

parameter

conditions/description

min

typ

max

units

total regulation

single output models

dual output models

±1

±5

%

%

transient response

returns to within 1% in <2.5 ms for a 50% load

change and the peak transient does not exceed 5%

start-up time

at 120 Vac

1.5

s

hold-up time

at 120 Vac, 75% load

16

ms

built in trim pot

±5

%

switching frequency

PFC

68

kHz

PWM

all single output models & PCM-400-D1224

all other dual output models

55

50

kHz

kHz

fan drive

12 Vdc/300 mA for external fan

fan fail (FF)

Designated as FF on Pin 3 of CN1, open collector output rated for

15Vdc/5mA max sink current. It goes high when a fan failure is detected.

power good (PG)

Designated as PG on CN1, TTL high 100~500 ms after DC regulation.

It goes low at least 1 ms before loss of regulation.

power supply on

green LED designated as LED1 on the PCB

Note:

1. U-Frame versions only

PROTECTIONS

parameter

conditions/description

min

typ

max

units

short circuit protection

auto restart

over current protection

auto restart

110

140

%

over voltage protection

output latches, must recycle ac input to reset

130

%

over temperature protection

auto restart

105

110

115

°C

SAFETY & COMPLIANCE

parameter

conditions/description

min

typ

max

units

isolation voltage

input to output, for 3 sec.

input to core, for 3 sec.

input to chassis (10 mA AC cut-off current), for 3 sec.

3,000

1,500

1,500

Vac

Vac

Vac

safety approvals

UL/cUL, TUV

safety standards

62368: IEC, EN, UL

EN 55022 Class B (conducted/radiated), EN 61000-3-(2,3),

EN 55024, IEC 61000-4-(2, 3, 4, 5, 6, 11), CE

MTBF

as per MIL-HDBK-217F at 30°C

100,000

hrs

RoHS

2011/65/EU

Note:

2. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.

Additional Resources: Product Page | 3D Model