45
Features
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Input voltages: 24, 48, 300 & 375 V
DC outputs: 3.3 V – 48 V
Programmable output: 10 to 110%
Regulation: ±0.5% no load to full load
Efficiency: Up to 88%
Max operating temp: 100°C, full load
Power Density: Up to 120 W/cubic Inch
Parallelable, with N+M fault tolerance
Low noise ZCS/ZVS architecture
Data Sheet
FasTrak Mini E-Grade Family
DC-DC Converter Module
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 provide high power density
with low noise and high efficiency.
Shown actual size:
2.28 x 2.2 x 0.5 in
57,9 x 55,9 x 12,7 mm
Absolute Maximum Ratings
Parameter
+In to –In voltage
24 Vin
48 Vin
300 Vin
375 Vin
PC to –In voltage
PR to –In voltage
SC to –Out voltage
–Sense to –Out voltage
Isolation voltage (in to out)
Isolation voltage (in to base)
Isolation voltage (out to base)
Operating temperature
Storage temperature
-0.5 to +36
-0.5 to +75
-0.5 to +375
-0.5 to +425
-0.5 to +7.0
-0.5 to +7.0
-0.5 to +1.5
1.0
3000
1550
500
-10 to +100
-20 to +125
500 (260)
750 (390)
5 (0.57)
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vrms
Vrms
Vrms
°C
°C
°F (°C)
°F (°C)
in-lbs (N-m)
<5 sec; wave solder
<7 sec; hand solder
6 each, # 4-40 or M3
Rating
Unit
Notes
Applications
Off-line systems with autoranging or
PFC front-ends, industrial and process
control, distributed power, medical, ATE,
communications, defense, aerospace
Part Numbering
e.g. V300B12E250BL2
V
24:
48:
300:
375:
B
18 – 36 Vin
36 – 75 Vin
180 – 375 Vin
250 – 425 Vin
E
Output Voltage
3V3:
3.3V
5:
5 V
12:
12 V
15:
15 V
24:
24 V
28:
28 V
48:
48 V
B
Pin Style
Blank:
Short
Tin/Lead
L:
Long Tin/Lead
S:Short
Gold
N:
Long Gold
Input Voltage
Input
24 V
48 V
300 V
375 V
Output Power (Watts)
3.3 Vout
5 Vout
>5 Vout
150
200
200
150
200
250
150
200
250
150
200
250
Baseplate
Blank:
Slotted
2:
Threaded
3:
Through-hole
Pin soldering temperature
Pin soldering temperature
Mounting torque
For a description of pin options, see
page 6.Baseplate options include slotted
flanges, threaded and through-hole. See
page 7 for dimensions. For other package
sizes and powerlevels, see the FasTrak
Maxi (full size) and FasTrak Micro
(quarter size) datasheets
Thermal Resistance and Capacity
Parameter
Baseplate to sink; flat, greased surface
Baseplate to sink; thermal pad (P/N 20263)
Baseplate to ambient
Baseplate to ambient; 1000 LFM
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
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FasTrak Mini E-Grade Family
Rev. 1.1
Page 1 of 8
Set your site on VICOR at www.vicorpower.com
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
Input voltage
24 Vin
48 Vin
300 Vin
375 Vin
Output voltage setpoint
18
36
180
250
24
48
300
375
36
75
375
425
±1
50
100
400
500
Vdc
Vdc
Vdc
Vdc
%
Nominal input; full load; 25°C
<100 ms surge withstand
Min
Typ
Max
Surge Withstand
Unit
Notes
MODULE OUTPUT VOLTAGE RELATED SPECIFICATIONS
Parameter
Efficiency (typ.)
Ripple and noise, p-p (typ.)
Output OVP setpoint (nom.)
Dissipation, standby (typ.)
Load regulation (max.)
Current limit (typ.)
Short circuit current (typ.)
3.3V
80.0
60
4.3
5.6
0.5
125
125
5V
83.5
70
6.3
6.2
0.5
125
125
12V
85.5
130
14.3
8.0
0.5
125
125
15V
87.0
90
17.8
8.0
0.5
125
125
24V
88.0
80
28.1
6.0
0.5
125
125
28V
89.0
65
32.7
7.4
0.5
125
125
48V
90.0
50
55.7
8.5
0.5
125
125
Unit
%
mV
Volts
Watts
±% Vout
% Iout
% Iout
Notes
Nominal input; 80% load; 25°C
Nominal input; full load;
25°C; 20 MHz BW
25°C; recycle input voltage to
restart ( 1 minute off )
No load; nominal input
No load to full load; nominal input
Output voltage 95% of nominal
Output voltage <250 mV
MODULE INPUT SPECIFICATIONS
Parameter
Undervoltage turn-on
Undervoltage turn-off
Overvoltage turn-off/on
24 Vin
17.5
15.3
37.8
48 Vin
34.9
30.5
78.8
300 Vin
175
153
N/A
375 Vin
243
212
446
Units
Vdc
Vdc
Vdc
Notes
Typical value
Typical value
Typical value
Note:
300 Vin models do not have overvoltage turn-off.
MODULE OUTPUT SPECIFICATIONS
Parameter
Line regulation
Temperature regulation
Power sharing accuracy
Programming range
10
Min
Typ
±0.5
±0.005
±5
110
Max
Unit
%
% / °C
%
%
Notes
Low line to high line; full load
Over operating temperature range
10 to 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.
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
FasTrak Mini E-Grade Family
Rev. 1.1
Page 2 of 8
Set your site on VICOR at www.vicorpower.com
ELECTRICAL CHARACTERISTICS, continued
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
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
Vdc
ohms
µF
Vdc
With open trim; referenced to –Sense. See Fig. 6
Referenced to –Sense
5.7
150
375
2.4
500
2.5
625
2.6
12
5.9
5.50
1.5
2.3
5.75
2.1
2.6
4
6.00
3.0
2.9
7
0.5
6.1
Vdc
mA
Vdc
ms
Vavg
Volts
mA
ohms
Volts
modules
25°C
Minimum pulse width: 20ns
Without PR buffer amplifier
UV, OV, OT, module fault. See Figs. 2 and 4
PR load >30 ohms, < 30 pF
PC current = 1.0 mA
PC voltage = 5.5V
Must be able to sink
≥4
mA. See Fig. 1
MODULE GENERAL SPECIFICATIONS
Parameter
Remote sense (total drop)
Isolation voltage (in to out)
Isolation voltage (in to base)
Isolation voltage (out to base)
Isolation resistance (in to out)
Weight
Temperature limiting
Agency Approvals
100
3000
1550
500
10
3.7 (104)
115
cULus, TÜV, CE
4 (112)
Min
Typ
Max
0.5
Unit
Vdc
Vrms
Vrms
Vrms
megohms
ounces (grams)
°C
See Figs. 2 and 4
UL60950, CSA0950, EN60950, IEC60950.
With a fuse in series with the +Input
Notes
0.25V per leg (senses must be closed)
Complies with reinforced insulation requirements
Complies with basic insulation requirements
Complies with operational insulation requirements
Note:
Specifications are subject to change without notice.
The latest data sheets for individual models are available on the Vicor website at vicorpower.com.
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
FasTrak Mini E-Grade Family
Rev. 1.1
Page 3 of 8
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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.
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.
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
+Out
+S
SC
–S
–Out
+In
SW1
Auto
Restart
2-20ms typ.
f (VIN)
Input Undervoltage
Input Overvoltage
Overtemperature
Module Faults
50Ω
SW2
SW3
1K
+Out
+S
SC
–S
PC
SW1, 2, & 3
shown in
"Fault" position
Disable
PR
–In
PR
–In
5.7Vdc
(0-3mA)
1.23
Vdc
6K
–Out
Disable = PC <2.3V
Figure 1—Module
enable/disable.
Figure 2—PC/SC
module alarm logic.
+In
PC
+Out
+S
SC
–S
–Out
Fault
PC
5.7V
40μs typ.
"Module
Enabled"
4kΩ
PR
–In
SC
1.23V
2-20ms typ.
Figure 3—LED
on-state indicator.
Figure 4—PC/SC
module alarm timing.
Optocoupler
+In
PC
4kW
+Out
+S
SC
–S
–Out
+In
PC
PR
–In
+Out
+S
SC
–S
–Out
1.00V
Alarm
PR
–In
Figure 5—Isolated
on-state indicator.
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
Figure 6—Secondary
side on-state indicator.
FasTrak Mini E-Grade Family
Rev. 1.1
Page 4 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.
+Out
+S
Error
Amp
1kΩ
0.033
μF
1.23V
+Out
+S
SC
–S
–Out
R
D
Trim Down
Load
Error
Amp
1kΩ
0.033
μF
1.23V
SC
–S
–Out
R
U
Trim Up
Load
R
D
(ohms) =
1,000 Vout
Vnom - Vout
R
U
(ohms) =
1,000
(Vout-1.23)
Vnom
1.23
(Vout-Vnom)
–1,000
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 –Sense pin.
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 +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
FasTrak Mini E-Grade Family
Rev. 1.1
Page 5 of 8
Set your site on VICOR at www.vicorpower.com
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