VICOR V48A12M250B

45
48Vin / 12Vout / 250Watts
DC-DC Converter Module
Model Number V48B12C250B*
Features
•
•
•
•
•
•
•
•
•
•
•
DC input range: 36 - 75V
Input surge withstand: 100V for 100ms
DC output: 12V
Programmable output: 10 to 110%
Regulation: ±0.2%
Efficiency: 87%
Maximum operating temperature:
100°C at full load
Power density: 100W/cubic inch
Height above board: 0.43 in. (10,9 mm)
Parallelable, with N+M fault tolerance
Low noise ZCS/ZVS architecture
Typical Applications: telecommunications
and distributed power systems
Shown actual size:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
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-toout 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.
* Part Numbering
24 = 24Vin
48 = 48Vin
300 = 300Vin
375 = 375Vin
A = Maxi
B = Mini
C = Micro
Output
Voltage
Parameter
Rating
Output
Power
Pin
Style
Product Grade Temperatures (°C)
Grade
Storage
Operating
C = - 40 to +125 - 20 to +100
T = - 40 to +125 - 40 to +100
H = - 55 to +125 - 40 to +100
M = - 65 to +125 - 55 to +100
Baseplate
For pin styles see page 6. Slotted baseplate
(style 1) requires no designator. For
threaded baseplate add a “2” to the end of
the part number. For thru-hole, add a “3”.
See page 7 for dimensions.
Unit
+In to –In voltage
-0.5 to +75
Vdc
+In to –In voltage
100
Vdc
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 +16.1
Vdc
+Sense to –Out voltage
-0.5 to +16.1
Vdc
1.0
Vdc
-0.5 to +1.5
Vdc
–Sense to –Out voltage
SC to –Out voltage
Isolation voltage (in to out)
2000
Vrms
Isolation voltage (in to base)
1550
Vrms
Isolation voltage (out to base)
V 48 B 15 C 250 B
Input Voltage
Absolute Maximum Ratings
Notes
<100ms
500
Vrms
Storage temperature (C–Grade)
-40 to +125
°C
See part numbering chart on this
page for other product grades.
Operating temperature (C–Grade)
Baseplate
-20 to +100
°C
Pin soldering temperature
500 (260)
°F (°C)
<5 sec; wave solder
Pin soldering temperature
750 (390)
°F (°C)
<7 sec; hand solder
5 (0.57)
in-lbs (N-m)
Mounting torque
6 each, # 4-40 or M3
Thermal Resistance and Capacity
Parameter
Min
Typ
Max
Unit
Baseplate to sink; flat, greased surface
0.16
Baseplate to sink; thermal pad (P/N 20264)
0.14
°C/Watt
Baseplate to ambient
8.0
°C/Watt
Baseplate to ambient; 1000 LFM
1.9
°C/Watt
Thermal capacity
83
Watt-sec/°C
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
V48B12C250B DC-DC Converter
Set your site on VICOR at www.vicorpower.com
°C/Watt
Rev. 2
Page 1 of 8
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 OPERATING SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
Operating input voltage
36
48
75
Vdc
100
Vdc
<100ms
Input surge withstand
Notes
Output voltage setpoint
11.88
12
12.12
Vdc
Nominal input; full load; 25°C
Output OVP setpoint
13.7
14.3
14.9
Vdc
25°C; recycle input voltage to restart ( 1 minute off )
250
Watts
Output power
Efficiency
86
87
%
At 100°C baseplate temperature
Nominal input; 75% of full load; 25°C
MODULE INPUT SPECIFICATIONS
Parameter
Min
Undervoltage turn-on
Typ
Max
Unit
34.9
35.7
Vdc
Notes
Undervoltage turn-off
29.4
30.5
Overvoltage turn-off/on
75.7
78.8
82.5
Vdc
4.4
6.5
Watts
No load
Typ
Max
Unit
Notes
Line regulation
±0.02
±0.3
%
Low line to high line; full load
Load regulation
±0.06
±0.2
%
No load to full load; nominal input
Temperature regulation
±0.002
±0.005
% / °C
Over operating temperature range
378
473
mV
Dissipation, standby
Vdc
MODULE OUTPUT SPECIFICATIONS
Parameter
Min
Ripple and noise, p-p
Nominal input; full load; 20 MHz bandwidth
Current limit
21.3
24
27.2
Amps
Output voltage 95% of nominal
Short circuit current
14.6
24
26.2
Amps
Output voltage <250mV
±2
±5
%
10 to 100% of full load
110
%
Of nominal output voltage. For trimming below 90%
of nominal, a minimum load of 10% of maximum
rated power may be required.
Power sharing accuracy
Programming range
10
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.
MODULE MECHANICAL SPECIFICATIONS
Baseplate
Slotted (Style 1)
Slotted baseplate (style 1) requires no designator.
For threaded baseplate add a "2" to the end of the
part number. For thru-hole add a "3".
Pin style
Short (Style 1)
For long pin configuration add “L” to the end of the
part number. See page 7 for pin dimensions.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
V48B12C250B DC-DC Converter
Set your site on VICOR at www.vicorpower.com
Rev. 2
Page 2 of 8
ELECTRICAL CHARACTERISTICS, continued
MODULE CONTROL SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
Notes
PRIMARY SIDE (PC = Primary Control; PR = Parallel)
PC bias voltage
current limit
5.50
1.5
5.75
2.1
6.10
3.0
Vdc
mA
PC current = 1.0 mA
PC voltage = 5.5V
PC module disable
2.3
2.3
2.6
Vdc
Must be able to sink ≥4 mA. See Fig. 1
4
7
ms
0.5
Vavg
UV, OV, OT, module fault. See Figs. 2 and 4
6.1
Volts
PR load >30 ohms, < 30 pF
PC module enable delay
PC module alarm
PR emitter amplitude
5.7
5.9
PR emitter current
150
PR receiver impedance
375
500
625
ohms
25°C
PR receiver threshold
2.4
2.5
2.6
Volts
Minimum pulse width: 20ns
12
modules
Without PR buffer amplifier
mA
PR drive capability
SECONDARY SIDE (SC = Secondary Control)
SC bandgap voltage
1.21
1.23
1.25
Vdc
SC resistance
990
1000
1010
ohms
SC capacitance
SC module alarm
Referenced to –Sense
0.033
µF
0
Vdc
With open trim; referenced to –Sense. See Fig. 6
Max
Unit
Notes
0.5
Vdc
0.25V per leg (senses must be closed)
MODULE GENERAL SPECIFICATIONS
Parameter
Min
Typ
Remote sense (total drop)
Isolation voltage (in to out)
2000
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
Weight
Temperature limiting
Agency approvals
3.7 (104)
100
115
megohms
4 (112)
ounces (grams)
°C
See Figs. 2 and 4
UL60950, EN60950, CSA60950, IEC 60950.
With a fuse in series with the +Input
cULus, TÜV, CE
Note: The cover is electrically conductive and may be electrically connected to the baseplate.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
V48B12C250B DC-DC Converter
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Rev. 2
Page 3 of 8
CONTROL FUNCTIONS - PC PIN
Module Enable/Disable
Module Alarm
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.
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.
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.
+In
+Out
+In
SW1
+S
PC
PR
2-20ms typ.
f (VIN)
SW3
1K
SC
–S
5.7Vdc
(0-3mA)
–In
–Out
SW2
+Out
+S
50Ω
SW1, 2, & 3
shown in
"Fault" position
PR
–S
–In
Auto
Restart
PC
SC
Disable
Input Undervoltage
Input Overvoltage
Overtemperature
Module Faults
1.23
Vdc
6K
–Out
Disable = PC <2.3V
Figure 1—Module enable/disable.
Figure 2—PC/SC module alarm logic.
+In
+Out
PC
"Module
Enabled"
Fault
+S
PC
40µs typ.
5.7V
SC
4kΩ
PR
–S
–In
–Out
SC
Figure 3—LED on-state indicator.
Optocoupler
1.23V
Figure 4—PC/SC module alarm timing.
+In
+Out
+In
PC
+S
PC
+Out
+S
SC
SC
4kW
2-20ms typ.
PR
–S
PR
–S
–In
–Out
–In
–Out
Figure 5—Isolated on-state indicator.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
Alarm
1.00V
Figure 6—Secondary side on-state indicator.
V48B12C250B DC-DC Converter
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Rev. 2
Page 4 of 8
CONTROL FUNCTIONS - SC PIN
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.
+Out
+Out
+S
+S
Error
Amp
SC
–S
1kΩ
0.033
µF
RD
Trim Down
Load
Error
Amp
RU
Trim Up
SC
Load
–S
1kΩ
0.033
µF
–Out
–Out
1.23V
1.23V
RD (ohms) =
1,000 Vout
Vnom - Vout
RU (ohms) =
1,000 (Vout-1.23) Vnom
1.23 (Vout-Vnom)
–1,000
Figure 7—Output voltage trim down circuit.
Figure 8—Output voltage trim up circuit.
Trim Down
Trim Up
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.
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 down resistor must be connected to the –Sense pin.
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.
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
V48B12C250B DC-DC Converter
Set your site on VICOR at www.vicorpower.com
Rev. 2
Page 5 of 8
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
+Out
+In
PC
+S
PC
Module
1
0.001µF
SC
PR
–In
–Out
+In
+Out
+In
+Out
+S
PC
0.001µF
SC
Module
2
PR
–In
+In
Module
N+1
PC
PR
–In
+Out
+S
SC
–S
–Out
SC
–S
PR
–S
–Out
–In
–Out
Ground plane
Figure 10—AC coupled single-wire interface.
• The +Out and –Out power buses
should be designed to minimize
and balance parasitic impedance
from each module output to the
load.
+S
–S
+S
Load
–S
–S
+Out
+S
SC
–S
–Out
+S
Module 2
(up to 12)
–In
+S
+In
PC
–S
PR
Figure 9—DC coupled single-wire interface.
PR
–In
SC
–S
Ground plane
PC
+S
Module
1
–Out
Module 2
(up to 12)
Module
1
+Out
–In
PC
+Out
+S
SC
–S
–Out
AC coupled single-wire interface. All PR pins are connected to
a single communication bus through 0.001µF (500V)
capacitors. This interface supports current sharing and is fault
tolerant except for the communication bus. See Figure 10.
+In
PR
+In
sharing but is not fault tolerant. Minus In pins must be tied to
the same electric potential. See Figure 9.
• 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.
+In
+Out
+S
PC
SC
PR
–In
–S
–Out
• OR’ing diodes may be inserted in
series with the +Out pins of each
module to provide
module output fault tolerance.
Figure 11—N+1 module array output connections.
+Sense from
other modules
in the array
Figure 12—OR’ing diodes connections.
PIN STYLES *
Designator
Description
Notes
(None)
Short solder
Requires in-board, mounting
L
Long solder
On-board mounting for 0.065" boards
S
Short ModuMate
SurfMate or in-board socket mounting
N
Long ModuMate
On-board socket mounting
* Pin style designator follows the “A” after the output power and precedes the baseplate designator.
Ex. V375A24C600AN — Long ModuMate Pins
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
V48B12C250B DC-DC Converter
Set your site on VICOR at www.vicorpower.com
Rev. 2
Page 6 of 8
MECHANICAL DRAWINGS
MODULE OUTLINE
0.50 ±0.02
12,7 ±0,5
Converter Pins
No. Function Label
1
+In
+
Primary
2
PC
Control
3
Parallel
PR
4
–In
–
5
–Out
–
6
8
9
0.01
style 2 & 3
baseplates only
(4X)***
0.300 ±0.015
7,62 ±0,38
–S
1
0.300 ±0.015
7,62 ±0,38
SC
2
3
+S
+
0.10
2,5
0.10
X 45˚
2,5
CHAMFER
0.35 (2X)
8,8
1.900
48,26
2.000
50,80
0.49
12,4
0.12* 0.20**
3,1 5,1
4
(ALL MARKINGS
THIS SURFACE)
7
–Sense
Secondary
Control
+Sense
+Out
2.20
55,9
1.74
44,2
0.23
(REF)
5,8
ALUMINUM
BASEPLATE
2.28 1.30
57,9 33,0
0.65
16,5
FULL R (6X)
0.130
3,30
9
PINS: TIN/LEAD
HOT SOLDER DIP
8
7
6
0.150 DIA,(2X)
3,81
0.080 DIA,(7X)
2,03
0.400
10,16
0.43
10,9
or
R
0.06
(3X)
1,5
0.54
(9X) Pin Style 1&S
13,7
(Short Pin)
0.700
17,78
1.000
25,40
1.400
35,56
Slotted (Style 1)
(6X)
5
Use a 4-40 Screw (6X)
Torque to:
5 in-lbs
.57 N-m
2.20
55,9
(REF.)
0.62
(9X) Pin Style 2&N
15,7
(Long Pin)
Threaded (Style 2)
4-40 UNC-2B (6X)
or
Thru Hole (Style 3)
* Style 1 baseplate only
** Style 2 & 3 baseplates
*** Reserved for Vicor accessories
Not for mounting
#30 Drill Thru (6X)
(0.1285)
ALL MARKINGS
THIS SURFACE
ies
PCB MOUNTING SPECIFICATIONS
PCB THICKNESS
R
0.062 ±0.010
1,57 ±0,25
PLATED
THRU HOLE
DIA
1.790
45,47
0.06
(4X)
1,5
ONBOARD
SOLDER
MOUNT
PIN STYLE 1&S
PIN STYLE 2&N
(7X)
0.094 ±0.003
2,39 ±0,08
0.094 ±0.003
2,39 ±0,08
(2X)
0.164 ±0.003
4,16 ±0,08
0.164 ±0.003
4,16 ±0,08
ALUMINUM
BASEPLATE
PINS STYLES
STYLE 1 & 2: TIN/LEAD
HOT SOLDER DIPPED
STYLE S & N: GOLD PLATED COPPER
0.158
4,01
1
2
3
4
1.584*
40,23
1.900*
48.26
48,26
9
8
7
6
5
0.400*
10,16
0.43
10,9
0.700*
17,78
0.195
4,95
INBOARD
SOLDER
MOUNT
0.53
13,5
Unless otherwise specified,
dimensions are in inches
mm
Decimals
1.000*
25,40
1.400*
35,56
0.XX
* DENOTES
±0.003
TOL =
±0,08
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
Tol.
Angles
±0.01
±0.25
0.XXX
±1°
±0.005
±0.127
V48B12C250B DC-DC Converter
Set your site on VICOR at www.vicorpower.com
Rev. 2
Page 7 of 8
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.
45
Component Solutions
for Your Power System
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
Email
Vicor Express: [email protected]
Technical Support: [email protected]
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
V48B12C250B DC-DC Converter
Rev. 2
Set your site on VICOR at www.vicorpower.com
10/03