rev.
page
date
1 of 3
02/2008
PART NUMBER:
VBD20 series
DESCRIPTION:
DC/DC converter
features
·20W isolated output
·efficiency to 88%
·2:1 input range
·regulated outputs
·continuous short circuit protection
·Pi input filter
model
number
VBD20-D24-S1R8
VBD20-D24-S2R5
VBD20-D24-S3R3
VBD20-D24-S5
VBD20-D24-S12
VBD20-D24-S15
VBD20-D24-D12
VBD20-D24-D15
VBD20-D48-S1R8
VBD20-D48-S2R5
VBD20-D48-S3R3
VBD20-D48-S5
VBD20-D48-S12
VBD20-D48-S15
VBD20-D48-D12
VBD20-D48-D15
input
voltage
18-36VDC
18-36VDC
18-36VDC
18-36VDC
18-36VDC
18-36VDC
18-36VDC
18-36VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
36-75VDC
output
voltage
1.8VDC
2.5VDC
3.3VDC
5VDC
12VDC
15VDC
±12VDC
±15VDC
1.8VDC
2.5VDC
3.3VDC
5VDC
12VDC
15VDC
±12VDC
±15VDC
output current
min.
max.
0mA
6000mA
0mA
6000mA
0mA
5000mA
0mA
4000mA
0mA
0mA
42mA
33mA
0mA
0mA
0mA
0mA
0mA
0mA
42mA
33mA
1670mA
1330mA
835mA
670mA
6000mA
6000mA
5000mA
4000mA
1670mA
1330mA
835mA
670mA
input current
no load
full load
30mA
523mA
30mA
718mA
40mA
722mA
60mA
926mA
20mA
20mA
20mA
20mA
30mA
30mA
30mA
40mA
15mA
15mA
10mA
10mA
938mA
934mA
938mA
941mA
262mA
359mA
386mA
463mA
469mA
467mA
469mA
471mA
efficiency
86%
87%
89%
90%
89%
87%
89%
89%
86%
87%
89%
90%
89%
89%
89%
89%
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
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
2
load regulation
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
