rev.

page

date

DESCRIPTION: DC/DC converter

2 of 3

02/2008

20050

phone

phone 503.612.2300 fax

fax 503.612.2382

PART NUMBER: VBD20 series

INPUT

input voltage range

24V

18-36V

48V

36-75V

under voltage lockout

24Vin power up

17V

power down

16V

48Vin power

34V

power down

33V

input filter type

PI type

positive logic remote on/off control:

logic compatibility

CMOS or open collector TTL

module ON

>5.5VDC or open circuit

module OFF

<1.2VDC

GENERAL SPECIFICATIONS

efficiency

see table

isolation voltage

1500VDC min.

isolation resistance

switching frequency

350KHz, Type

operating temperature range

-40°C to 85°C

EMI/RFI

six sided continuous shield

derating, Above 71°C

linearly to zero power at + 100°C

case temperature

100°C max

storage temperature range

-55°C to +105°C

dimensions

2.0x1.0x0.4 inches

(50.8x25.4x10.2mm)

case material

black coated copper with

non-conductive base

NOTES:

1. Measured from high line to low line

2. Measured from full load to 1/10 load

3. The output noise is measured with 0.1μF ceramic capacitor

4. Suffix “S” to the model number with alternative pin configuration

OUTPUT

voltage accuracy

±1.5% max.

transient response

single 25% step load change

<500μ sec.

ripple & noise

20MHz BW³,

75mV p-p., max

temperature coefficient

±0.03%/°C max

short circuit protection

continuous

single / dual output

±0.2% / ±0.5% max

±1.0% max

over voltage protection

Zener or TVS clamp

external trim adj. range

±10%