PRELIMINARY
VICBrick
V•I Chip
VICBrick
Features
TM
DC-DC Converters
Quarter Brick, 48 Vin Family
1.0 to 5.0 Vdc Output
• Up to 80 A continuous, 100 A surge
• 93% efficiency @ 5 Vdc
• 100°C operating case temperature
• 180 W/in
3
power density 120 A/in
3
• 36 – 75 Vdc input range
• 100 V input surge for 100 ms
• Low noise ZCS/ZVS architecture
• Fast dynamic response
• Parallelable, with fault tolerance
• 2,250 Vdc basic insulation
Product Overview
VICBrick high-density converters (up to
120 A/in
3
) are enabled by Vicor’s V•I Chip
technology. Each VICBrick consists of two
V•I Chips: a 36 – 75 Vdc input Pre-Regulator
Module (PRM) that is paired with an
appropriate Voltage Transformation Module
(VTM) chosen to provide the desired output
voltage. While the ultra-low profile package
conforms to industry-standard quarter-brick
footprint (1.45" x 2.28"), it stands only
0.27" high and achieves 80 A of output current.
Standard outputs include 1.0, 1.2, 1.5 V and
1.8 V at 80 A, 2.5 V at 60 A, 3.0 and 3.3 V
at 45 A, and 5 V at 30 A. Output voltages
can be easily trimmed up or down over a
wide range. Dual output pins are used for
output currents over 50 A.
Utilizing breakthrough Sine Amplitude
Converter (SAC) technology, VICBricks
offer the highest efficiency, lowest noise,
fastest transient response and highest power
density. And because of the V•I Chips
highly integrated functionality, VICBricks
have only a fraction of the parts of a typical
DC-DC converter.
Absolute Maximum Ratings
Parameter
+In to –In voltage
Continuous
Surge
On/Off to –In voltage
Isolation voltage
Input to output
Operating case temperature
Pin soldering temperature
Wave
Hand
Rating
-1.0 to +75.0
100
-0.6 to +7.0
2,250
-40 to +100
500 (260)
750 (390)
Unit
Vdc
Vdc
Vdc
Vdc
°C
°F (°C)
°F (°C)
Notes
<100ms
Basic insulation
Output side of VTM
<5 sec
<7 sec
Thermal Resistance and Capacity
Parameter
VICBrick to ambient; 0 LFM
VICBrick to ambient; 200 LFM
Thermal capacity
Typ
8.0
6.0
22.8
Unit
°C/W
°C/W
Ws/°C
Vicor Corporation
Tel: 800-735-6200
vicorpower.com
VICBrick DC-DC Converter
Rev. 1.5
Page 1 of 14
PRELIMINARY
Specifications, continued
MECHANICAL DRAWINGS
57.9
2.28
6.8
0.27
(+)IN
(+)OUT
(+)SENSE
15.24
0.600
ON/OFF
36.8
1.45
(-)IN
TRIM
(-)SENSE
(-)OUT
11.43
0.450 7.62
0.300 3.81
0.150
10.8
0.42
3.6
0.14
TOP VIEW (COMPONENT SIDE)
BOTTOM VIEW
50.8
2.00
SEATING PLANE
10.6
0.42
NOTES:
1. DIMENSIONS ARE: mm/INCH.
2. UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:
.X/.XX=
±0.5/0.02,
.XX/.XXX=
±0.25/0.010
ø
ø 1.02 (6)PL.
0.040
1.52
0.060
(2)PL.
Figure 1—
Mechanical outline and PCB footprint information; single output pin version (package style 1)
57.9
2.28
6.8
0.27
(+)OUT
(+)IN
(+)OUT
(+)SENSE
36.8
1.45
ON/OFF
TRIM
(-)SENSE
(-)IN
(-)OUT
(-)OUT
7.0
0.27
3.6
0.14
22.86
0.900
19.05
0.750
15.24
0.60011.43
0.450 7.62
0.300
3.81
0.150
TOP VIEW (COMPONENT SIDE)
SEATING PLANE
BOTTOM VIEW
50.8
2.00
10.6
0.42
ø 1.02 (6)PL.
0.040
ø 1.52
0.060
(4)PL.
NOTES:
1. DIMENSIONS ARE: mm/INCH.
2. UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:
.X/.XX=
±0.5/0.02,
.XX/.XXX=
±0.25/0.010
Figure 2—
Mechanical outline and PCB footprint information; dual output pin version (package style 2)
Vicor Corporation
Tel: 800-735-6200
vicorpower.com
VICBrick DC-DC Converter
Rev. 1.5
Page 3 of 14
PRELIMINARY
Specifications, continued
Electrical characteristics apply over the full operating range of input voltage, output load (resistive) and case temperature,
unless otherwise specified.
INPUT SPECIFICATIONS
Parameter
Operating input voltage
Input surge withstand
Undervoltage
Turn-on
Turn-off
Overvoltage
Turn-off
Turn-on
Input reflected ripple current
Input dV/dt
Turn-on time
Power up
ON/OFF enable
No load power dissipation
Recommended external
input capacitance
10
150
6
6.0
50
35
33.8
Min
36
Typ
48
Max
75
100
36
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
% Iin
10
V/µs
ms
ms
W
µF
200 nH maximum source inductance
mA p-p (see Fig.3 for test circuit)
<100 ms
Notes
32.6
76.0
75.0
3
OUTPUT SPECIFICATIONS
Parameter
Output voltage accuracy
Current limit
Average short circuit current
Efficiency
Output OVP setpoint
Line regulation
Load regulation
Temperature regulation
Ripple and noise, p-p
Transient response
Voltage deviation
Recovery time
Min
Typ
±1
125
200
120
0.1
0.1
±0.05
Max
Unit
%
%
mA
%
%
%
% / °C
No load - full load step change, see note 1 below
2
75
%
µs
Notes
48 V input; no load; 25°C
Module dependent, see charts for individual models
Module dependent, see charts for individual models
Note 1: For important information relative to applications where the unit is subjected to continuous dynamic loading, contact Vicor
Applications Engineering at 800-927-9474.
Vicor Corporation
Tel: 800-735-6200
vicorpower.com
VICBrick DC-DC Converter
Rev. 1.5
Page 4 of 14
PRELIMINARY
Specifications, continued
Input reflected
ripple measurement point
1.5
µH
+
48 V 100
_
µF
Full
Load
Example filter for low input reflected ripple
Input reflected current at full load and 48 Vin
Peak-to-peak 36 mA
Figure 3—Typical
input reflected ripple, and example input filter design
Figure 4—Output
turn-on waveform with input turn-on at
full load and 48 Vin
Figure 5—
Output voltage turn-on waveform with ON/OFF
enable at full load and 48 Vin.
P-configuration (positive logic) VICBrick
+Out
+In
+
_
ON/OFF
–In
–Out
Full
Load
Figure 6—Test
circuit for measuring turn-on times
Vicor Corporation
Tel: 800-735-6200
vicorpower.com
VICBrick DC-DC Converter
Rev. 1.5
Page 5 of 14
DIY/Open Source Hardware
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