Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 1 of 9
Set your site on VICOR at www.vicorpower.com
Parameter
Rating
Unit
Notes
+In to In voltage
-0.5 to +36.0
Vdc
+In to In voltage
50
Vdc
<100ms
PC to In voltage
-0.5 to +7.0
Vdc
PR to In voltage
-0.5 to +7.0
Vdc
+Out to Out voltage
-0.5 to +3.1
Vdc
+Sense to Out voltage
-0.5 to +3.1
Vdc
Sense to Out voltage
1.0
Vdc
SC to Out voltage
-0.5 to +1.5
Vdc
Isolation voltage (in to out)
3000
Vrms
Isolation voltage (in to base)
1550
Vrms
Isolation voltage (out to base)
500
Vrms
Storage temperature
See Page 8
C
125 Max
Operating temperature
See Page 8
C
Baseplate
Pin soldering temperature
500 (260)
F (C)
<5 sec; wave solder
Pin soldering temperature
750 (390)
F (C)
<7 sec; hand solder
Mounting torque
5 (0.57)
in-lbs (N-m)
6 each, # 4-40 or M3
Shown actual size:
4.6 x 2.2 x 0.5 in
117 x 56 x 12,7 mm
(Product shown is for size only.
Pin and baseplate style may vary.
Pin style 1 and slotted baseplate are shown)
4
5
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Unit
Baseplate to sink; flat, greased surface
0.08
C/Watt
Baseplate to sink; thermal pad (P/N 20263)
0.07
C/Watt
Baseplate to ambient
4.9
C/Watt
Baseplate to ambient; 1000 LFM
1.1
C/Watt
Thermal capacity
165
Watt-sec/C
Thermal Resistance and Capacity
24Vin / 2Vout / 160Watts
DC-DC Converter Module
See Page 8 for Part Numbers and Options
Features
DC input range: 18 - 36V
Input surge withstand: 50V for 100ms
DC output: 2V
Programmable output: 10 to 110%
Regulation: 0.2% no load to full load
Efficiency: 71.6%
Maximum operating temperature:
100C at full load
Power density: 32W/cubic inch
Height above board: 0.43 in. (10,9 mm)
Parallelable, with N+M fault tolerance
Low noise ZCS/ZVS architecture
Pin style: See Page 6
Baseplate: See Page 7
Product Overview
This DC-DC converter module uses
2nd Generation power processing, control
and packaging technologies to provide the
performance, flexibility and cost effectiveness
expected of a mature power component.
For example, a plated-cavity core transformer
couples widely separated primary and
secondary windings, resulting in low in-to-
out parasitic capacitance and noise.
High frequency ZCS/ZVS switching,
advanced power semiconductor packaging
and thermal management provide high
power density with low temperature
gradients. Extensive use of silicon
integration results in 1/3 the part count
of a 1st Generation converter.
This converter is manufactured in a
state-of-the-art automated manufacturing
facility on a short-cycle-time robotic line
having a capacity of one module every ten
seconds. In-line process controls are
designed to achieve low defect rates and
consistent quality. A comprehensive CIM
system controls the dispatching, assembly
and testing of each module, enabling small
lots to be manufactured as efficiently as
hundreds-of-thousands of units.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 2 of 9
Set your site on VICOR at www.vicorpower.com
Parameter
Min
Typ
Max
Unit
Notes
Operating input voltage
18
24
36
Vdc
Input surge withstand
50
Vdc
<100ms
Output voltage setpoint
1.98
2.00
2.02
Vdc
Nominal input; full load; 25C
Output OVP setpoint
2.79
2.90
3.01
Vdc
25C; recycle input voltage to restart ( 1 minute off )
Output power
160
Watts
At 100C baseplate temperature
Efficiency
69.0
71.6
%
Nominal input; 75% of full load; 25C
Parameter
Min
Typ
Max
Unit
Notes
Line regulation
0.02
0.20
%
Low line to high line; full load
Load regulation
0.06
0.20
%
No load to full load; nominal input
Temperature regulation
0.002
0.005
% / C
-20 to 100C
Ripple and noise, p-p
50
63
mV
Nominal input; full load; 25C; 20MHz bandwidth
Current limit
81.6
92.0
108.0
Amps
Output voltage 95% of nominal
Short circuit current
56
92
108
Amps
Output voltage <250mV
Power sharing accuracy
2
5
%
10 to 100% of full load
Programming range
10
110
%
Of nominal output voltage. For trimming below 90%
of nominal, a minimum load of 10% of maximum
rated power may be required.
Parameter
Min
Typ
Max
Unit
Notes
Undervoltage turn-on
17.5
17.9
Vdc
Undervoltage turn-off
14.77
15.30
Vdc
Overvoltage turn-off/on
36.3
37.8
39.6
Vdc
Dissipation, standby
5.1
8.2
Watts
No load
MODULE OPERATING SPECIFICATIONS
MODULE INPUT SPECIFICATIONS
MODULE OUTPUT SPECIFICATIONS
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.
Note: For important information relative to applications where the converter modules are subject to continuous dynamic loading,
contact Vicor applications engineering at 800-927-9474.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 3 of 9
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Parameter
Min
Typ
Max
Unit
Notes
PRIMARY SIDE
(PC = Primary Control; PR = Parallel)
PC bias voltage
5.50
5.75
6.00
Vdc
PC current = 1.0 mA
current limit
1.5
2.1
3.0
mA
PC voltage = 5.5V
PC module disable
2.3
2.6
2.9
Vdc
Must be able to sink
4 mA. See Fig. 1
PC module enable delay
4
7
ms
PC module alarm
0.5
Vavg
UV, OV, OT, module fault. See Figs. 2 and 4
PR emitter amplitude
5.7
5.9
6.1
Volts
PR load >30 ohms, < 30 pF
PR emitter current
150
mA
PR receiver impedance
375
500
625
ohms
25C
PR receiver threshold
2.4
2.5
2.6
Volts
Minimum pulse width: 20ns
PR drive capability
12
modules
Without PR buffer amplifier
SECONDARY SIDE
(SC = Secondary Control)
SC bandgap voltage
1.21
1.23
1.25
Vdc
Referenced to Sense
SC resistance
990
1000
1010
ohms
SC capacitance
0.033
F
SC module alarm
0
Vdc
With open trim; referenced to Sense. See Fig. 6
Parameter
Min
Typ
Max
Unit
Notes
Remote sense (total drop)
0.5
Vdc
0.25V per leg (senses must be closed)
Isolation voltage (in to out)
3000
Vrms
Complies with reinforced insulation requirements
Isolation voltage (in to base)
1550
Vrms
Complies with basic insulation requirements
Isolation voltage (out to base)
500
Vrms
Complies with operational insulation requirements
Isolation resistance (in to out)
10
megohms
Weight
7.3 (210)
8 (227)
ounces (grams)
Temperature limiting
100
115
C See Figs. 2 and 4
Agency approvals available
UL, CSA, TV, BABT, CE, VDE
UL1950, CSA950, EN60950, VDE0805, BS7002,
IEC60950. With a fuse in series with the +Input
MODULE CONTROL SPECIFICATIONS
MODULE GENERAL SPECIFICATIONS
ELECTRICAL CHARACTERISTICS, continued
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 4 of 9
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CONTROL FUNCTIONS - PC PIN
Module Enable/Disable
The module may be disabled by pulling PC below 2.3V with
respect to the Input. This may be done with an open collector
transistor, relay, or optocoupler. Multiple converters may be
disabled with a single transistor or relay either directly or via
"OR'ing" diodes. See Figure 1.
Module Alarm
The module contains "watchdog" circuitry which monitors
input voltage, operating temperature and internal operating
parameters. In the event that any of these parameters are
outside of their allowable operating range, the module will shut
down and PC will go low. PC will periodically go high and the
module will check to see if the fault (as an example,
overtemperature) has cleared. If the fault has not been cleared,
PC will go low again and the cycle will restart. The SC pin will
go low in the event of a fault and return to its normal state after
the fault has been cleared. See Figures 2 and 4.
+In
PC
PR
In
Disable
Disable = PC <2.3V
Figure 1--Module enable/disable.
Figure 3--LED on-state indicator.
+In
PC
PR
In
4k
"Module
Enabled"
+In
PC
PR
In
Optocoupler
4k
Alarm
1.00V
+Out
+S
SC
S
Out
+Out
+S
SC
S
Out
+In
PC
PR
In
Input Undervoltage
2-20ms typ.
f (VIN)
Auto
Restart
5.7Vdc
(0-3mA)
50
SW2
SW3
1.23
Vdc
6K
1K
SW1
SW1, 2, & 3
shown in
"Fault" position
Input Overvoltage
Overtemperature
Module Faults
Figure 2--PC/SC module alarm logic.
Figure 5--Isolated on-state indicator.
2-20ms typ.
Fault
SC
PC
1.23V
5.7V
40
s typ.
Figure 4--PC/SC module alarm timing.
Figure 6--Secondary side on-state indicator.
Primary Auxiliary Supply
At 5.7V, PC can source up to 1.5mA. In the example shown in
Figure 3, PC powers a module enabled LED.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 5 of 9
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Output Voltage Programming
The output voltage of the converter can be adjusted or
programmed via fixed resistors, potentiometers or voltage
DACs. See Figures 7 and 8.
CONTROL FUNCTIONS - SC PIN
Figure 8--Output voltage trim up circuit.
Figure 7--Output voltage trim down circuit.
R
D
(ohms) =
1,000 Vout
Vnom - Vout
+Out
+S
SC
S
Out
R
U
Trim Up
Load
Error
Amp
1k
1.23V
0.033
F
Load
+Out
+S
SC
S
Out
R
D
Trim Down
Error
Amp
1k
1.23V
0.033
F
Trim Down
1. This converter is not a constant power device it has a
constant current limit. Hence, available output power is
reduced by the same percentage that output voltage is
trimmed down. Do not exceed maximum rated output current.
2. The trim down resistor must be connected to the Sense pin.
Trim Up
1. The converter is rated for a maximum delivered power. To ensure
that maximum rated power is not exceeded, reduce maximum
output current by the same percentage increase in output voltage.
2. The trim up resistor must be connected to the +Sense pin.
3. Do not trim the converter above maximum trim range
(typically +10%) or the output over voltage
protection circuitry may be activated.
R
U
(ohms) =
1,000 (Vout-1.23) Vnom
1,000
1.23 (Vout-Vnom)
Trim resistor values calculated automatically:
On-line calculators for trim resistor values are available
on the vicor website at: vicorpower.com/tools.html.
Resistor values can be calculated for fixed trim up, fixed
trim down and for variable trim up or down cases for both
1st and 2nd Generation DC-DC converters.
In addition to trimming information, the web site and the
Applications Manual also include design tips, applications
circuits, EMC suggestions, thermal design guidelines and
PDF data sheets for all available Vicor products.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 6 of 9
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+Out
+S
SC
S
Out
+Sense from
other modules
in the array
Figure 12--OR'ing diodes connections.
Module 2
Module 1
Module N+1
+Out
+S
SC
S
Out
+Out
+S
SC
S
Out
+Out
+S
SC
S
Out
Load
+S
S
+S
S
+S
S
Figure 11--N+1 module array output connections.
The +Out and Out power buses should be
designed to minimize and balance parasitic
impedance from each module output to the load.
The +Sense pins should be tied to the same
point on the +Out power bus; the Sense pins
should be tied to the same point on the Out
power bus.
At the discretion of the power system designer,
a subset of all modules within an array may be
configured as slaves by shorting SC to S.
OR'ing diodes may be inserted in series with
the +Out pins of each module to provide
module output fault tolerance.
Figure 9--DC coupled single-wire interface.
+In
PC
PR
In
Module 2
(up to 12)
+In
PC
PR
In
Module 1
Ground plane
+In
PC
PR
In
Module 2
(up to 12)
+In
PC
PR
In
Module 1
Ground plane
Figure 10--AC coupled single-wire interface.
0.001F
0.001F
CONTROL FUNCTIONS - PR PIN
Parallel Operation
The PR pin supports paralleling for increased power with N+1
(N+M) redundancy and phased array capability. Modules of
the same input voltage, output voltage, and power level will
current share if all PR pins are suitably interfaced.
Compatible interface architectures include the following:
DC coupled single-wire interface. All PR pins are directly
connected to one another. This interface supports current
sharing but is not fault tolerant. Minus In pins must be tied to
the same electric potential. See Figure 9.
AC coupled single-wire interface. All PR pins are connected
to a single communication bus through 0.001F (500V)
capacitors. This interface supports current sharing and is fault
tolerant except for the communication bus. See Figure 10.
PIN STYLES
Description
Notes
Short solder
Requires in-board, mounting
Long solder
On-board mounting for 0.65" boards
Short ModuMate
SurfMate or in-board socket mounting
Long ModuMate
On-board socket mounting
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 7 of 9
Set your site on VICOR at www.vicorpower.com
1.74
44,2
2.20
55,9
5
6
7
8
9
4
3
2
1
0.23
5,8
(REF)
0.180
4,57
0.080
2,03
1.400
35,56
1.000
25,40
0.700
17,78
0.400
10,16
DIA,(7X)
DIA,(2X)
4-40 UNC-2B
Thru (4X)***
(Style 2 and 3 only)
Slotted (Style 1)
or
Threaded (Style 2)
4-40 UNC-2B (6X)
or
Thru Hole (Style 3)
#30 Drill Thru (6X)
(0.1285)
0.50
12,7
0.06
1,5
2.20
55,9
(REF)
1.80
45,7
4.60
116,8
3.60
91,4
0.13
3,3
FULL R (6X)
(6X)
R (3X)
CHAMFER
0.10
2,5
X 45
0.54
13,7
0.43
10,9
0.38
9,6
0.20**
5,08
0.12*
3,1
(2X)
0.01
Use a
4-40 Screw (6x)
Torque to:
5 in-lbs
0.57 N-m
Pin Style 2&N
(Long Pin)
0.62
15,7
Pin Style 1&S
(Short Pin)
(9X)
(9X)
(ALL MARKINGS
THIS SURF
A
CE)
ALUMINUM
BASEPLATE
0.50
0.02
12,7
0,5
* Style 1 baseplate only
** Style 2 & 3 baseplates
*** Reserved for Vicor accessories
Not for mounting
4.200
106,68
0.300
0.015
7,62
0,38
0.300
0.015
7,62
0,38
2.00
50,8
0.10
2,5
Converter Pins
No.
Function
Label
1
+In
+
2
Primary
PC
Control
3
Parallel
PR
4
In
5
Out
6
Sense
S
7
Secondary
SC
Control
8
+Sense
+S
9
+Out
+
MECHANICAL DRAWINGS
MODULE OUTLINE
PINS: TIN/LEAD
HOT SOLDER DIP
ALL MARKINGS
THIS SURFACE
PINS STYLES
STYLE 1 & 2: TIN/LEAD
HOT SOLDER DIPPED
STYLE S & N: GOLD PLATED COPPER
ALUMINUM
BASEPLATE
Unless otherwise specified,
dimensions are in inches
mm
Decimals
Tol.
Angles
0.XX
0.01
0,25
1
0.XXX
0.005
0,127
0.195
4,95
1.400*
35,56
1.000*
25,40
0.700*
17,78
0.400*
10,16
3.844
97,64
4.200*
106,68
1.790
45,47
0.06
1,5
R (4X)
0.178
4,52
5
6
7
8
9
1
2
3
4
0.003
0,08
* DENOTES
TOL =
PLATED
THRU HOLE
DIA
PCB THICKNESS
0.062
0.010
1,57
0,25
PIN STYLE 1&S
0.094
0.003
2,39
0,08
0.194
0.003
4,93
0,08
PIN STYLE 2&N
0.094
0.003
2,39
0,08
0.194
0.003
4,93
0,08
INBOARD
SOLDER
MOUNT
0.43
10,9
ONBOARD
SOLDER
MOUNT
(7X)
(2X)
0.53
13,5
PCB MOUNTING SPECIFICATIONS
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
Page 8 of 9
Set your site on VICOR at www.vicorpower.com
PART NUMBERS & OPTIONS
24Vin / 2Vout / 160Watts
Part Number
Pins
Base
Grade
Minimum Max Minimum
Operating Operating
Storage
Temp
Temp
Temp
VI-982401
Short Solder
Slotted
C
-20C
100C
-40C
VI-982402
Long Solder
Slotted
C
-20C
100C
-40C
VI-982403
Short ModuMate
Slotted
C
-20C
100C
-40C
VI-982404
Long ModuMate
Slotted
C
-20C
100C
-40C
VI-982405
Short Solder
Threaded
C
-20C
100C
-40C
VI-982406
Long Solder
Threaded
C
-20C
100C
-40C
VI-982407
Short ModuMate
Threaded
C
-20C
100C
-40C
VI-982408
Long ModuMate
Threaded
C
-20C
100C
-40C
VI-982409
Short Solder
Thru-hole
C
-20C
100C
-40C
VI-982410
Long Solder
Thru-hole
C
-20C
100C
-40C
VI-982411
Short ModuMate
Thru-hole
C
-20C
100C
-40C
VI-982412
Long ModuMate
Thru-hole
C
-20C
100C
-40C
VI-982413
Short Solder
Slotted
T
-40C
100C
-40C
VI-982414
Long Solder
Slotted
T
-40C
100C
-40C
VI-982415
Short ModuMate
Slotted
T
-40C
100C
-40C
VI-982416
Long ModuMate
Slotted
T
-40C
100C
-40C
VI-982417
Short Solder
Threaded
T
-40C
100C
-40C
VI-982418
Long Solder
Threaded
T
-40C
100C
-40C
VI-982419
Short ModuMate
Threaded
T
-40C
100C
-40C
VI-982420
Long ModuMate
Threaded
T
-40C
100C
-40C
VI-982421
Short Solder
Thru-hole
T
-40C
100C
-40C
VI-982422
Long Solder
Thru-hole
T
-40C
100C
-40C
VI-982423
Short ModuMate
Thru-hole
T
-40C
100C
-40C
VI-982424
Long ModuMate
Thru-hole
T
-40C
100C
-40C
VI-982425
Short Solder
Slotted
H
-40C
100C
-55C
VI-982426
Long Solder
Slotted
H
-40C
100C
-55C
VI-982427
Short ModuMate
Slotted
H
-40C
100C
-55C
VI-982428
Long ModuMate
Slotted
H
-40C
100C
-55C
VI-982429
Short Solder
Threaded
H
-40C
100C
-55C
VI-982430
Long Solder
Threaded
H
-40C
100C
-55C
VI-982431
Short ModuMate
Threaded
H
-40C
100C
-55C
VI-982432
Long ModuMate
Threaded
H
-40C
100C
-55C
VI-982433
Short Solder
Thru-hole
H
-40C
100C
-55C
VI-982434
Long Solder
Thru-hole
H
-40C
100C
-55C
VI-982435
Short ModuMate
Thru-hole
H
-40C
100C
-55C
VI-982436
Long ModuMate
Thru-hole
H
-40C
100C
-55C
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24Vin/2Vout/160W DC-DC Converter
Rev. 5.2
02/03
Vicor's comprehensive line of power solutions includes modular, high
density DC-DC converters and accessory components, configurable power
supplies, and custom power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is
assumed by Vicor for its use. No license is granted by implication or otherwise under any patent or patent
rights of Vicor. Vicor components are not designed to be used in applications, such as life support systems,
wherein a failure or malfunction could result in injury or death. All sales are subject to Vicor's Terms and
Conditions of Sale, which are available upon request.
Specifications are subject to change without notice.
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
Email
Vicor Express: vicorexp@vicr.com
Technical Support: apps@vicr.com
Component Solutions
for Your Power System
4
5
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