V24C28C100B Datasheet PDF - Vicor
| Part Number | V24C28C100B | |
| Description | DC-DC Converter Module | |
| Manufacturers | Vicor | |
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45
Data Sheet
24V Input Micro Family*
Features
• DC input range: 18 - 36V
• Input surge withstand: 50V for 100ms
• DC output: 2V - 48V
• Programmable output: 10 to 110%
• Regulation: ±0.2% no load to full load
• Efficiency: Up to 87%
• Maximum operating temperature:
100°C at full load
• Power density: Up to 90W/cubic inch
• Height above board: 0.43 in. (10,9 mm)
• Parallelable, with N+M fault tolerance
• Low noise ZCS/ZVS architecture
DC-DC Converter Module
Typical Applications: telecommunications,
process control and distributed power systems
Shown actual size:
2.28 x 1.45 x 0.5 in
57,9 x 36,8 x 12,7 mm
Product Overview
This DC-DC converter module uses
2nd Generation power processing, control
Absolute Maximum Ratings
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
Parameter
+In to –In voltage
+In to –In voltage
Rating
-0.5 to +36
50
secondary windings, resulting in low in-to- PC to –In voltage
-0.5 to +7.0
out parasitic capacitance and noise.
PR to –In voltage
-0.5 to +7.0
High frequency ZCS/ZVS switching,
advanced power semiconductor packaging
and thermal management provide high
power density with low temperature
Isolation voltage (in to out)
Isolation voltage (in to base)
Isolation voltage (out to base)
2000
1550
500
gradients. Extensive use of silicon
Storage temperature (C-Grade) -40 to +125
integration results in 1/3 the part count
of a 1st Generation converter.
Operating temperature (C-Grade) -20 to +100
Pin soldering temperature
500 (260)
Part Numbering
V 24 C 15 C 100 B
Pin soldering temperature
Mounting torque
750 (390)
5 (0.57)
Unit
Vdc
Vdc
Vdc
Vdc
Vrms
Vrms
Vrms
°C
°C
°F (°C)
°F (°C)
in-lbs (N-m)
Notes
<100ms
See part numbering chart on this
page for other product grades.
Baseplate
<5 sec; wave solder
<7 sec; hand solder
6 each, # 4-40 or M3
Input Voltage
24 = 24Vin
48 = 48Vin
300 = 300Vin
375 = 375Vin
Output
Voltage
Output
Power
Pin
Style
Product Grade Temperatures (°C) Base-
Grade Storage
Operating plate
Thermal Resistance and Capacity
A = Maxi
B = Mini
C = Micro
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
Parameter
Min Typ Max Unit
Baseplate to sink; flat, greased surface 0.24 °C/Watt
For pin styles see page 6. Slotted baseplate
(style 1) requires no designator. For
Baseplate to sink; thermal pad (P/N 20265)
Baseplate to ambient
0.21
10.9
°C/Watt
°C/Watt
threaded baseplate add a “2” to the end of Baseplate to ambient; 1000 LFM
2.8 °C/Watt
the part number. For thru-hole, add a “3”. Thermal capacity
48 Watt-sec/°C
See page 7 for dimensions.
* The modules described here are the highest power for each output voltage.
Consult factory for availability of lower power units.
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
24V Micro Family
Set your site on VICOR at www.vicorpower.com
Rev. 2.5
Page 1 of 8
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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.
Error
Amp
1kΩ
0.033µF
1.23V
+Out
SC
–Out
RD
Trim Down
Load
Error
Amp
1kΩ
0.033µF
1.23V
+Out
SC
–Out
RU
Trim Up
Load
RD (ohms) =
1,000 Vout
Vnom - Vout
Figure 7—Output voltage trim down circuit.
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 –Out pin.
1,000 (Vout-1.23) Vnom
RU (ohms) = 1.23 (Vout-Vnom) –1,000
Figure 8—Output voltage trim up circuit.
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 +Out 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
24V Micro Family
Set your site on VICOR at www.vicorpower.com
Rev. 2.5
Page 5 of 8
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