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VI Chip® PRM® Modules
Description
®
PRM® Modules enable power architects to maximize the
density and performance of their high power designs.
The integration of a high performance Zero-Voltage
Switching (ZVS) topology with custom magnetics results
in a fully integrated buck-boost regulator with over 97%
efficiency. With wide input voltage ranges optimized for
24, 36, 45, and 48 Volt inputs these regulators provide a
regulated 48 Volt output which can be trimmed across a
wide output range. Full sized packages (32.5 x 22 x 6.73
mm) can convert up to 600 Watts of power, also available
in half-sized packages (22 x 16.5 x 6.73 mm) up to
250 Watts. Higher power conversion can be achieved by
arraying modules together.
Use of a ZVS topology enables high-frequency operation
that maximizes efficiency by minimizing the significant
switching losses associated with conventional buck
regulators using hard switching topologies. High switching
frequency also reduces the size of the external filter
components, providing power density while enabling
fast dynamic response to line and load transients
C
S
US
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NRTL
Features
Simple to Use
n
Point-of-load, ZVS Buck-Boost regulation
n
Factorized Power Architecture
n
Minimal external components
High Density
n
Up to 2,040 W/in3, with 600 W in 1.1in2 package
n
Wide Vin Optimized for 48 Vout
24 Vin, 18 – 36 Vin range
36 Vin, 18 – 60 Vin range
45 Vin, 38 – 55 Vin range
48 Vin, 36 – 75 Vin range
High Efficiency
n
Full Chip: Up to 600 W at 97.6%
n
Half Chip: Up to 250 W at 96.7%
MILCOTS version are also available.
See our website for more information.
www.vicorpower.com
Flexible
n
Regulation: Remote sense, local loop, adaptive loop
n
Parallel capable
PRM
Model Number*
Input Voltage
Nom.
Range
Output
Voltage Range
Output
Power Max.
Output
Current Max.
Package
(V)
(V)
(V)
P024F048T12AL
24
18 – 36
26 – 55
120
2.5
Full
P036F048T12AL
36
18 – 60
26 – 55
120
2.5
Full
PRM48AH480T200A00
48
36 – 75
20 – 55
200
6.3
Half
PRM48AF480T400A00
48
36 – 75
20 – 55
400
8.3
Full
PRM48BH480T200B00
48
38 – 55
5 – 55
200
5.5
Half
PRM48DH480T250B03
48
38 – 60
5 – 55
200
5.5
Half
PRM48BH480T250A00
48
38 – 55
20 – 55
250
7.3
Half
PRM48JH480T250A00
48
45 – 55
20 – 55
250
7.3
Half
PRM48JH480T250A02
48
45 – 55
20 – 55
250
7.3
Half
PRM48BF480T400B00
48
38 – 55
5 – 55
400
11.0
Full
PRM48BF480T500A00
48
38 – 55
20 – 55
500
14.5
Full
PRM48JF480T500A00
48
45 – 55
20 – 55
500
14.5
Full
PRM48BF480T600A00
48
38 – 55
5 – 55
600
16.5
Full
*Full-chip models also available in through hole. All models available in M grade.
(W)
(A)
Configurable at vicorpower.com
vicorpower.com
Rev 1.3 8/2015
US
Application Examples
Figure 1: Stand Alone
PRM
ENABLE
VAUX
REF/
REF_EN
TRIM
RTRIM
AL
VT
SHARE/
CONTROL NODE
VC
SGND
IFB
F1
VIN
+IN
VOUT
20 V to 55 V
+OUT
CIN
COUT
–IN
–OUT
SGND
GND
SGND
Figure 2: Remote Sense
Voltage Sense and Error Amplifier
(Single Ended)
C2
C1
RSS
REF 3312
PRM
IN
SGND
SGND
10 k
GND
ENABLE
AL
VT
SHARE/
CONTROL NODE
VC
R1
SGND
CSS
SGND
V+
V–
VOUT
SGND
+IN
+IN
–IN
RS
+OUT
CIN
VOUT
External Current Sense
and Feedback
–IN
R2
Voltage Reference with Soft Start
IFB
VIN
VREF
VREF
VAUX
REF/
REF_EN
TRIM
ON/OFF
CONTROL
OUT
R3
COUT
–OUT
SGND
GND
SGND
Figure 3 : Array
PRM 1 MASTER
ENABLE
VAUX
REF/
REF_EN
TRIM
AL
VT
SHARE/
CONTROL NODE
VC
IFB
VIN
F1
+IN
LIN 1
+OUT
–IN
CIN
SGND
VOUT
48 V
LF 1
–OUT
GND
SGND 1
GND
PRM 2 SLAVE
ENABLE
VAUX
SGND
COUT
REF/
REF_EN
TRIM
AL
VT
SHARE/
CONTROL NODE
VC
LOAD
IFB
F2
LIN 2
+IN
+OUT
–IN
–OUT
SGND
LF 2
GND
1Ω
SGND 2
SGND 1
vicorpower.com
Rev 1.3 8/2015
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