Industrial and process control, distributed power, medical, ATE, communications,
defense and aerospace.
For details on proper operation please refer to the:
Design Guide & Applications Manual for Maxi, Mini, Micro Family.
Absolute Maximum Ratings
Product Overview
These DC-DC converter modules use advanced
power processing, control and packaging
technologies to provide the performance,
flexibility, reliability and cost effectiveness of a
mature power component.
High-frequency ZCS/ZVS switching provides
high power density with low noise and
high efficiency.
[a]
Derate power to 75% for 9 – 10V
IN
.
Part Numbering
e.g. V28B24T150BL2
28B
Product Grade Temperatures (°C)
Grade
Operating
Storage
C
= –20 to +100 –40 to +125
T
= –40 to +100 –40 to +125
H
= –40 to +100 –55 to +125
M
= –55 to +100 –65 to +125
B
Output Power
V
OUT
P
OUT
3.3V
5V
12V
15V
24V
28V
36V
48V
75W
75W
125W
150W
150W
150W
150W
150W
Pin Style
Finish
Blank:
Short
Tin/Lead
L:
Long
Tin/Lead
S:
Short ModuMate
Gold
N:
Long ModuMate
Gold
F:
Short RoHS
Gold
G:
Long RoHS
Gold
K:
Extra Long RoHS
Gold
Baseplate
Blank:
Slotted
2:
Threaded
3:
Through-hole
Product Type
V
= Standard
S
= Enhanced
efficiency
(avail. ≤12
V
OUT
only)
Output Voltage
3 V 3
= 3.3V
5
= 5V
8
= 8V
12
= 12V
15
= 15V
24
= 24V
28
= 28V
36
= 36V
48
= 48V
Note:
Product images may not highlight current product markings.
28V Wide Mini Family
Page 1 of 11
Rev 2.8
11/2021
28V Wide Input
Module Family Electrical Characteristics
Electrical characteristics apply over the full operating range of input voltage, output load (resistive) and baseplate temperature, unless otherwise specified.
All temperatures refer to the operating temperature at the center of the baseplate.
Module Input Specifications
Parameter
Operating input voltage
Input surge withstand
Undervoltage turn-on
Undervoltage turn-off
Overvoltage turn-off/on
Disabled input current
7.37
36.3
8.73
7.64
37.8
12.0
39.6
14.0
Min
9
Typ
24
Max
36
50
8.95
Unit
V
DC
V
DC
V
DC
V
DC
V
DC
Notes
From 9 to 10V input available power is reduced to
75% of max rating.
<100ms
mA
PC pin low
Module Output Specifications
Parameter
Output voltage set point
Line regulation
Temperature regulation
Power sharing accuracy
Programming range
10
±0.02
±0.002
±2
Min
Typ
Max
±1
±0.20
±0.005
±5
110
Unit
%
%
%/°C
%
%
Notes
Of nominal output voltage. Nominal input; full load; 25°C
Low line to high line; full load
Over operating temperature range
10 – 100% of full load
Of nominal output voltage. For trimming below 90%
of nominal, a minimum load of 10% of maximum
rated power may be required.
Externally applied
Externally applied
Externally applied
Externally applied
Externally applied
Externally applied
Externally applied
Externally applied
+OUT to –OUT, +Sense to –OUT — Absolute Maximum Ratings
3.3V
5V
12V
15V
24V
28V
36V
48V
–0.5 to 4.7
–0.5 to 7.0
–0.5 to 16.1
–0.5 to 20.0
–0.5 to 31.7
–0.5 to 36.9
–0.5 to 47.1
–0.5 to 62.9
V
DC
V
DC
V
DC
V
DC
V
DC
V
DC
V
DC
V
DC
Note:
The permissible load current must never be exceeded during normal, abnormal or test conditions. For additional output related application information,
please refer to output connections on page 6.
Thermal Resistance and Capacity
Parameter
Baseplate to sink; flat, greased surface
Baseplate to sink; thermal pad (P/N 20264)
Baseplate to ambient
Baseplate to ambient; 1000LFM
Thermal capacity
Min
Typ
0.16
0.14
8.0
1.9
83
Max
Unit
°C/Watt
°C/Watt
°C/Watt
°C/Watt
Watt-sec/°C
28V Wide Mini Family
Page 2 of 11
Rev 2.8
11/2021
28V Wide Input
Module Family Electrical Characteristics (Cont.)
Electrical characteristics apply over the full operating range of input voltage, output load (resistive) and baseplate temperature, unless otherwise specified.
All temperatures refer to the operating temperature at the center of the baseplate.
Module Control Specifications
Parameter
Min
Typ
Max
Unit
Notes
Primary Side (PC = Primary Control; PR = Parallel)
PC bias voltage
current limit
PC module disable
PC module enable delay
PC module alarm
PC resistance
PR emitter amplitude
PR emitter current
PR receiver impedance
PR receiver threshold
PR drive capability
Secondary Side (SC = Secondary Control)
SC bandgap voltage
SC resistance
SC capacitance
SC module alarm
1.21
990
1.23
1000
0.033
0
1.25
1010
V
DC
Ω
µF
V
DC
With open trim; referenced to –Sense. See Figure 7
Referenced to –Sense
0.9
5.7
150
375
2.4
500
2.5
625
2.6
12
1.0
5.9
5.50
1.5
2.3
5.75
2.1
2.6
4
6.00
3.0
2.9
7
0.5
1.1
6.1
V
DC
mA
V
DC
ms
V
AVG
MΩ
Volts
mA
Ω
Volts
modules
25°C
Minimum pulse width: 20ns
Without PR buffer amplifier
UV, OV, OT, module fault. See Figures 3 and 5
See Figure 3, converter off or fault mode
PR load >30Ω, <30pF
PC current = 1.0mA
PC voltage = 5.5V
During normal operation
Switch must be able to sink ≥4mA. See Figure 2
Module General Specifications
Parameter
Remote sense (total drop)
Isolation test voltage (IN to OUT)*
Isolation test voltage (IN to base)*
Isolation test voltage (OUT to base)*
Isolation resistance
Weight (E, C, T grade)
Weight (H, M grade)
3.1
[89.3]
3.5
[99.6]
100
3000
1500
500
10
3.5
[100.3]
3.9
[110.6]
115
cURus, cTÜVus, CE
UKCA
* Isolation test voltage, 1 minute or less.
Note:
Specifications are subject to change without notice.
3.9
[111.3]
4.3
[121.6]
Min
Typ
Max
0.5
Unit
V
DC
V
RMS
V
RMS
V
RMS
MΩ
ounces
[grams]
ounces
[grams]
°C
See Figures 3 and 5. Do not operate coverter >100°C.
UL60950-1, EN60950-1, CSA60950-1, IEC60950-1.
With appropriate fuse in series with the +Input
Electrical equipment (safety) regulations
Notes
0.25V per leg (sense leads must be connected to
respective, output terminals)
Complies with reinforced insulation requirements
Complies with basic insulation requirements
Complies with operational insulation requirements
IN to OUT, IN to baseplate, OUT to baseplate
Temperature limiting
Agency approvals
28V Wide Mini Family
Page 3 of 11
Rev 2.8
11/2021
28V Wide Input
Module-Specific Operating Specifications
3.3
V
OUT
, 75W (e.g. S28B3V3C75BL, V28B3V3C75BL)
Parameter
Efficiency
S28B3V3C75BL (enhanced efficiency)
V28B3V3C75BL (standard efficiency)
Ripple and noise
Output OVP
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
78.0
76.7
4.14
Typ
83.0
77.7
60
4.3
5.2
±0.02
26.1
26.1
Max
Unit
%
75
4.46
5.8
±0.2
22.73
30.7
30.7
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; full load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
No load
No load to full load; nominal input
For V
IN
9 – 10V, load current 17.05A max.
Output voltage 95% of nominal
Output voltage <250mV
0
23.1
15.8
5
V
OUT
, 75W (e.g. S28B5C75BL, V28B5C75BL)
Parameter
Efficiency
S28B5C75BL (enhanced efficiency)
V28B5C75BL (standard efficiency)
Ripple and noise
Output OVP set point
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
75.0
71.8
6.03
Typ
79.0
73.3
252
6.25
5.8
±0.02
17.3
17.3
Max
Unit
%
315
6.47
6.5
±0.2
15
20.3
20.3
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; 75% load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
No load
No load to full load; nominal input
For V
IN
9 – 10V, load current 11.25A max.
Output voltage 95% of nominal
Output voltage <250mV
0
15.3
10.5
12
V
OUT
, 125W (e.g. S28B12C125BL, V28B12C125BL)
Parameter
Efficiency
S28B12C125BL (enhanced efficiency)
V28B12C125BL (standard efficiency)
Ripple and noise
Output OVP set point
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
83.0
79.3
13.7
Typ
85.0
80.8
290
14.3
8.2
±0.02
12.0
12.0
Max
Unit
%
363
14.9
9.4
±0.2
10.4
14.1
14.1
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; full load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
No load
No load to full load; nominal input
For V
IN
9 – 10V, load current 7.8A max.
Output voltage 95% of nominal
Output voltage <250mV
0
10.6
7.3
15
V
OUT
, 150W (e.g. V28B15C150BL)
Parameter
Efficiency
Ripple and noise
Output OVP set point
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
82.5
17.1
Typ
83.9
328
17.8
6.8
±0.02
11.5
11.5
Max
410
18.5
7.8
±0.2
10
13.5
13.5
Unit
%
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; full load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
No load
No load to full load; nominal input
For V
IN
9 – 10V, load current 7.5A max.
Output voltage 95% of nominal
Output voltage <250mV
0
10.2
7
28V Wide Mini Family
Page 4 of 11
Rev 2.8
11/2021
28V Wide Input
Module-Specific Operating Specifications (Cont.)
24
V
OUT
, 150W (e.g. V28B24C150BL)
Parameter
Efficiency
Ripple and noise
Output OVP set point
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
78.5
27.1
Typ
81.0
448
28.1
8.9
±0.02
7.19
7.19
Max
560
29.1
10.5
±0.2
6.25
9.2
9.2
Unit
%
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; full load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
No load
No load to full load; nominal input
For V
IN
9 – 10V, load current 4.69A max.
Output voltage 95% of nominal
Output voltage <250mV
0
6.37
4.37
28
V
OUT
, 150W (e.g. V28B28C150BL)
Parameter
Efficiency
Ripple and noise
Output OVP set point
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
79.4
31.5
Typ
80.9
360
32.7
9.6
±0.02
6.16
6.16
Max
450
33.9
10.9
±0.2
5.36
7.24
7.24
Unit
%
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; full load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
No load
No load to full load; nominal input
For V
IN
9 – 10V, load current 4.02A max.
Output voltage 95% of nominal
Output voltage <250mV
0
5.46
3.75
36
V
OUT
, 150W (e.g. V28B36C150BL)
Parameter
Efficiency
Ripple and noise
Output OVP set point
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
78.8
40.4
Typ
79.8
320
41.9
9
±0.02
4.8
4.8
Max
400
43.4
10
±0.2
4.17
5.63
5.63
Unit
%
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; full load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
No load
No load to full load; nominal input
For V
IN
9 – 10V, load current 3.13A max.
Output voltage 95% of nominal
Output voltage <250mV
0
4.25
2.91
48
V
OUT
, 150W (e.g. V28B48C150BL)
Parameter
Efficiency
Ripple and noise
Output OVP set point
Dissipation, standby
Load regulation
Load current
Current limit
Short circuit current
Min
80.5
53.7
Typ
81.8
320
55.7
5.6
±0.02
3.6
3.6
Max
400
57.7
14
±0.2
3.13
4.23
4.23
Unit
%
mV
Volts
Watts
%
Amps
Amps
Amps
Notes
Nominal input; 75% load; 25°C
P-P; Nominal input; full load; 20MHz bandwidth
25°C; recycle input voltage or PC to restart (>100ms off)
