rev.
page
date
2 of 3
02/2008
PART NUMBER:
VBD20 series
DESCRIPTION:
DC/DC converter
INPUT
input voltage range
under voltage lockout
24V
48V
24Vin power up
power down
48Vin power
power down
18-36V
36-75V
17V
16V
34V
33V
PI type
CMOS or open collector TTL
>5.5VDC or open circuit
<1.2VDC
input filter type
positive logic remote on/off control:
logic compatibility
module ON
module OFF
OUTPUT
voltage accuracy
transient response
single 25% step load change
ripple & noise
20MHz BW³,
temperature coefficient
short circuit protection
line regulation
1
single / dual output
load regulation
2
over voltage protection
external trim adj. range
±1.5% max.
<500μ sec.
75mV p-p., max
±0.03%/°C max
continuous
±0.2% / ±0.5% max
±1.0% max
Zener or TVS clamp
±10%
GENERAL SPECIFICATIONS
efficiency
isolation voltage
isolation resistance
switching frequency
operating temperature range
EMI/RFI
derating, Above 71°C
case temperature
storage temperature range
dimensions
case material
non-conductive base
see table
1500VDC min.
10
8
ohms min
350KHz, Type
-40°C to 85°C
six sided continuous shield
linearly to zero power at + 100°C
100°C max
-55°C to +105°C
2.0x1.0x0.4 inches
(50.8x25.4x10.2mm)
black coated copper with
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
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
rev.
page
date
3 of 3
02/2008
PART NUMBER:
VBD20 series
DESCRIPTION:
DC/DC converter
DIMENSIONS (mm)
STANDARD PIN CONFIGURATION
ALTERNATE PIN CONFIGURATION
(suffix “-S”)
tolerance:
inches
mm
.xx = ±0.04, .xxx = ±0.010
.xx = ±1.0, .xxx = ±0.25
Pin #
1
2
3
4
Single Output
Function
+V Input
-V Input
+V Output
Trim
-V Output
Dual Output
Function
+V Input
-V Input
+V Output
Common
-V Output
DERATING CURVE
5
6
Remote ON / OFF
120%
100%
-40
71
Output Load(%)
80%
60%
40%
20%
0%
-40
-2 0
0
20
40
60
80
100
Natural
Convection
100
Ambient Temperature(˚C)
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
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