rev.

page

date

DESCRIPTION:

DC/DC converter

2 of 3

08/2007

20050

phone 503.612.2300 fax 503.612.2382

PART NUMBER:

VSCQ20 series

NOTES:

1. measured from high line to low line

2. measured from full load to 1/4 load

3. remote on/off control:

logic compatibility CMOS or open collector TTL

EC-ON

>+5.5VDC or open circuit

EC-OFF

<1.8VDC

control common

referenced to input minus

GENERAL SPECIFICATIONS

efficiency

see table

isolation voltage

1500VDC min.

isolation resistance

switching frequency

300KHz, type

operating temperature range

-25°C to +71°C

derating, above 60°C

linearly to zero power at +100°C

case temperature

100°C max.

storage temperature

-55°C to +105°C

EMI/RFI

six sided continuous shield

dimensions

2.0x1.6x0.45 inches

(50.8x40.64x11.43mm)

case material

black coated copper with non-conductive base

INPUT

input voltage range

24V

9-36V

48V

18-72V

input filter type

PI type

positive logic remote on/off control

see note 3

OUTPUT

voltage accuracy single output

±1.0% max.

voltage accuracy dual+output

±1.0% max.

voltage accuracy dual-output

±2.0% max.

voltage balance, dual output at full load

±1.0% max.

transient response

single 25% step load change

<500µ sec.

dual-FL 1/2L±1% error band

<500µ sec.

ripple & noise

20MHz BW,

20mV RMS., max

75mV p-p, max

temperature coefficient

±0.02%/°C

short circuit protection

continuous

Safety

approved to UL60950-1 (E222736)

single/dual output

±0.5% max

single/dual output

±0.5% max