VT048A030M070TP [VICOR]
VTM™ Current Multiplier; VTM ™电流倍增器
| 型号： | VT048A030M070TP |
| 厂家： | 
VICOR CORPORATION |
| 描述： | VTM™ Current Multiplier |
| 文件： | 总11页 (文件大小：633K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
VTMTM Current Multiplier
Features
• 100°C baseplate operation
• 48 V to 3 V Converter
• ZVS / ZCS isolated sine amplitude converter
•
Typical efficiency 95%
• 70 A (105.0 A for 1 ms)
• <1 µs transient response
• Isolated output
• High density – up to 91 A/in3
• Small footprint – 1.64 and 2.08 in2
• Height above board – 0.37 in (9.5 mm)
• Low weight – 1.10 oz (31.3 g)
• No output filtering required
• Lead free wave solder compatible
• Agency approvals
Size:
1.91 x 1.09 x 0.37 in
48,6 x 27,7 x 9,5 mm
Applications
Product Overview
• Solid state lighting
• Stadium displays
• Industrial controls
• Avionics
The thermally enhanced VI BRICK VTM current multiplier excels at speed, density and
efficiency to meet the demands of advanced power applications. Combined with the
VI BRICK PRM regulator they create a DC-DC converter with flexibility to provide isolation
and regulation where needed. The PRM can be located with the VTM at the point of load
or remotely in the back plane or on a daughter card.
• Underseas
• RF Amplifiers
• Microprocessor and DSP
requiring fast response
Part Numbering
VT
048
A
030
T
070
F
P
Output
Current
Designator
Package
Size
Output
Voltage
Designator
(=VOUT x10)
Voltage
Transformation
Module
Input
Voltage
Designator
(=IOUT
)
Product Grade Temperatures (°C)
Grade Operating Storage
Baseplate
Pin Style
F = Slotted flange
T = Transverse heat sink[a]
P = Through hole
T =
-40 to +100 -40 to +125
-55 to +100 -65 to +125
M =
[a] Contact factory
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 1 of 11
SPECIFICATIONS
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.
Absolute Maximum Ratings
Parameter
Values
-1.0 to 60
100
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
A
Notes
+In to -In
+In to -In
For 100 ms
PC to -In
-0.3 to 7.0
-0.3 to 19.0
-0.5 to 6.0
2,250
VC to -In
+Out to -Out
Isolation voltage
Output current
Peak output current
Output power
Peak output power
Input to output
Continuous
For 1 ms
70
105.0
A
232
W
Continuous
For 1 ms
348
W
-40 to +100
-55 to +100
-40 to +125
-65 to +125
°C
°C
T-Grade; baseplate
Operating temperature
Storage temperature
M-Grade
; baseplate
°C
°C
T-Grade
M-Grade
Note: Stresses in excess of the maximum ratings can cause permanent damage to the device. Operation of the device is not implied at these or any other conditions
in excess of those given in the specification. Exposure to absolute maximum ratings can adversely affect device reliability.
(Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Input Specifications
Parameter
Min
Typ
Max
55
1
Unit
Vdc
V/µs
Vdc
Vdc
Adc
mA p-p
W
Notes
Input voltage range
Input dV/dt
26
48
Max VIN = 53 V, operating from -55°C to -40°C
Input overvoltage turn-on
Input overvoltage turn-off
Input current
55.1
59.5
4.8
Input reflected ripple current
No load power dissipation
Internal input capacitance
Internal input inductance
182
3.0
4
Using test circuit in Figure 10; See Figure 1
4.6
5
µF
nH
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 2 of 11
SPECIFICATIONS (CONT.)
(Conditions are at 48 Vin, full load, and 25°C ambient unless otherwise specified)
Output Specifications
Parameter
Min
1.63
1.49
0
Typ
Max
3.43
3.31
70
Unit
Vdc
Vdc
Adc
Note
No load
Output voltage
Full load
Rated DC current
26 - 55 VIN
Max pulse width 1ms, max duty cycle 10%,
baseline power 50%
Module will shut down
See Parallel Operation on Page 7
Peak repetitive current
105.0
A
Short circuit protection set point
Current share accuracy
Efficiency
98.0
Adc
%
5
10
Half load
94.0
93.8
95.0
94.2
1.1
%
%
See Figure 3
See Figure 3
Full load
Internal output inductance
Internal output capacitance
Output overvoltage setpoint
Output ripple voltage
No external bypass
10 µF bypass capacitor
Effective switching frequency
Line regulation
nH
µF
254
Effective value
3.4
Vdc
Module will shut down
65
8.6
2.5
140
2.6
mVp-p
mVp-p
MHz
See Figures 2 and 5
See Figure 6
2.4
Fixed, 1.3 MHz per phase
K
0.0619
1/16
1.7
0.0631
2.0
VOUT = K•VIN at no load
See Figure 13
Load regulation
ROUT
mΩ
Transient response
Voltage overshoot
Response time
66
200
1
mV
ns
70 A load step with 100 µF CIN; See Figures 7 and 8
See Figures 7 and 8
Recovery time
µs
See Figures 7 and 8
WAVEFORMS
Ripple vs. Output Current
70
60
50
40
30
20
10
0
7
14
21
28
35
42
49
56
63
70
Output Current (A)
Figure 1 — Input reflected ripple current at full load and 48 Vf.
Figure 2 — Output voltage ripple vs. output current at 48 Vf with no POL
bypass capacitance.
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 3 of 11
SPECIFICATIONS (CONT.)
WAVEFORMS
Power Dissipation
Efficiency vs. Output Current
96
94
92
90
88
86
84
14
12
10
8
6
4
2
0
7
14
21
28
35
42
49
56
63
70
0
7
14
21
28
35
42
49
56
63
70
Output Current (A)
Output Current (A)
Figure 3 — Efficiency vs. output current.
Figure 4 — Power dissipation vs. output current.
Figure 5 — Output voltage ripple at full load and 48 Vf with no POL bypass
Figure 6 — Output voltage ripple at full load and 48 Vf with 10 µF ceramic
capacitance.
POL bypass capacitance and 20 nH distribution inductance.
Figure 8 — 70-0 A load step with 100 µF input capacitance and no output
Figure 7 — 0-70 A load step with 100 µF input capacitance and no output
capacitance.
capacitance.
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 4 of 11
SPECIFICATIONS (CONT.)
General Specifications
Parameter
Min
Typ
Max
Unit
Notes
MTBF
MIL-HDBK-217F
Isolation specifications
Voltage
3.5
Mhrs
25°C, GB
2,250
10
Vdc
pF
Input to output
Capacitance
Resistance
3,000
Input to output
MΩ
Input to output
cTÜVus
CE Mark
RoHS
UL/CSA 60950-1, EN 60950-1
Low voltage directive
Agency approvals
Mechanical
See Mechanical Drawings, Figures 15, 16
Weight
1.10/31.3
oz/g
Dimensions
Length
1.91/48,6
1.09/27,7
0.37/9,5
in/mm
in/mm
in/mm
Baseplate model
Baseplate model
Baseplate model
Width
Height
Thermal
Over temperature shutdown
Thermal capacity
Baseplate-to-ambient
Baseplate-to-ambient; 1000 LFM
Baseplate-to-sink; flat, greased surface
Baseplate-to-sink; thermal pad
125
130
23.8
7.7
135
°C
Junction temperature
Ws/°C
°C/W
°C/W
°C/W
°C/W
2.9
0.40
0.36
Auxiliary Pins
Parameter
Min
Typ
Max
Unit
Notes
Primary Control (PC)
DC voltage
4.8
2.4
5.0
2.5
5.2
Vdc
Vdc
Module disable voltage
VC voltage must be applied when module is
enabled using PC
Module enable voltage
2.5
2.6
2.9
Vdc
Current limit
2.4
12
2.5
40
mA
µs
Source only
Disable delay time
VTM Control (VC)
External boost voltage
PC low to Vout low
14
10
19
Vdc
ms
Required for VTM start up without PRM
Vin > 26 Vdc. VC must be applied continuously
if Vin < 26 Vdc.
External boost duration
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 5 of 11
PIN / CONTROL FUNCTIONS
+In / -In DC Voltage Ports
The VTM input should not exceed the maximum specified. Be aware of this
limit in applications where the VTM is being driven above its nominal out-
put voltage. If less than 26 Vdc is present at the +In and -In ports, a contin-
uous VC voltage must be applied for the VTM to process power. Otherwise
VC voltage need only be applied for 10 ms after the voltage at the +In and
-In ports has reached or exceeded 26 Vdc. If the input voltage exceeds the
overvoltage turn-off, the VTM will shutdown. The VTM does not have
internal input reverse polarity protection. Adding a properly sized diode in
series with the positive input or a fused reverse-shunt diode will provide
reverse polarity protection.
TM – For Factory Use Only
VC – VTM Control
The VC port is multiplexed. It receives the initial VCC voltage from an
upstream PRM, synchronizing the output rise of the VTM with the output
rise of the PRM. Additionally, the VC port provides feedback to the PRM to
compensate for the VTM output resistance. In typical applications using
VTMs powered from PRMs, the PRM’s VC port should be connected to the
VTM VC port.
Figure 9 — VI BRICK VTM pin configuration (viewed from pin side)
In applications where a VTM is being used without a PRM, 14 V must be
supplied to the VC port for as long as the input voltage is below 26 V and
for 10 ms after the input voltage has reached or exceeded 26 V. The VTM is
not designed for extended operation below 26 V. The VC port should only be
used to provide VCC voltage to the VTM during startup.
PC – Primary Control
The Primary Control (PC) port is a multifunction port for controlling the
VTM as follows:
Disable – If PC is left floating, the VTM output is enabled. To
disable the output, the PC port must be pulled lower than 2.4 V,
referenced to -In. Optocouplers, open collector transistors or relays
can be used to control the PC port. Once disabled, 14 V must be
re-applied to the VC port to restart the VTM.
Primary Auxiliary Supply – The PC port can source up to 2.4 mA
at 5 Vdc.
+Out / -Out DC Voltage Output Ports
The output and output return are through two sets of contact locations.
The respective +Out and –Out groups must be connected in parallel with
as low an interconnect resistance as possible. Within the specified input
voltage range, the Level 1 DC behavioral model shown in Figure 13 defines
the output voltage of the VTM. The current source capability of the VTM is
shown in the specification table.
To take full advantage of the VTM, the user should note the low output
impedance of the device. The low output impedance provides fast tran-
sient response without the need for bulk POL capacitance. Limited-life
electrolytic capacitors required with conventional converters can be
reduced or even eliminated, saving cost and valuable board real estate.
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 6 of 11
APPLICATION NOTES & TEST CIRCUIT
Parallel Operation
Anomalies in the response of the source will appear at the output of the
VTM, multiplied by its K factor of 1/16. The DC resistance of the source
should be kept as low as possible to minimize voltage deviations on the
input to the VTM. If the VTM is going to be operating close to the high
limit of its input range, make sure input voltage deviations will not trig-
ger the input overvoltage turn-off threshold.
In applications requiring higher current or redundancy, VTMs can be
operated in parallel without adding control circuitry or signal lines. To
maximize current sharing accuracy, it is imperative that the source and
load impedance on each VTM in a parallel array be equal. If VTMs are
being fed by an upstream PRM, the VC nodes of all VTMs must be con-
nected to the PRM VC.
To achieve matched impedances, dedicated power planes within the PC
board should be used for the output and output return paths to the
array of paralleled VTMs. This technique is preferable to using traces of
varying size and length.
Input Fuse Recommendations
VI BRICKs are not internally fused in order to provide flexibility in config-
uring power systems. However, input line fusing of VI BRICKs must
always be incorporated within the power system. A fast acting fuse is
required to meet safety agency Conditions of Acceptability. The input
line fuse should be placed in series with the +In port. For agency
approvals and fusing conditions, click on the link below:
The VTM power train and control architecture allow bi-directional power
transfer when the VTM is operating within its specified ranges. Bi-direc-
tional power processing improves transient response in the event of an
output load dump. The VTM may operate in reverse, returning output
power back to the input source. It does so efficiently.
http://www.vicorpower.com/technical_library/technical_documentation/quality_
and_certification/safety_approvals/
Input Impedance Recommendations
To take full advantage of the VTM’s capabilities, the impedance of the
source (input source plus the PC board impedance) must be low over a
range from DC to 5 MHz. The input of the VTM (factorized bus) should
be locally bypassed with a 8 µF low Q aluminum electrolytic capacitor.
Additional input capacitance may be added to improve transient
performance or compensate for high source impedance. The VTM has
extremely wide bandwidth so the source response to transients is usually
the limiting factor in overall output response of the VTM.
Application Notes
For VTM and VI BRICK application notes on soldering, board layout, and
system design please click on the link below:
http://www.vicorpower.com/technical_library/application_information/
Applications Assistance
Please contact Vicor Applications Engineering for assistance,
1-800-927-9474, or email at apps@vicorpower.com.
Input reflected ripple
7 A[a]
Fuse
measurement point
+
F1
+IN
+OUT
-OUT
+OUT
-OUT
R3
10 mΩ
TM
VC
PC
C1
47 µF
Al electrolytic
VTM
Load
C2
C3
10 µF
0.47 μF
+
–
ceramic
14 V
-IN
–
Notes:
1. C3 should be placed close to the load
2. R3 may be ESR of C3 or a separate damping resistor.
[a]
See Input Fuse Recommendations section
Figure 10 —VI BRICK VTM test circuit
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 7 of 11
APPLICATION NOTES (CONT.)
In figures below;
K = VTM transformation ratio
RO = VTM output resistance
Vf = PRM output (Factorized Bus Voltage)
VO = VTM output
VL = Desired load voltage
FPA ADAPTIVE LOOP
Vo = VL 1.0%
VC
PC
TM
IL
VH
SC
SG
OS
NC
CD
+IN
+OUT
-OUT
+OUT
-OUT
Factorized
Bus (Vf)
OS
R
NC
L
O
A
D
PR
PRM-AL
RCD
TM
VC
PC
VTM
+IN
+OUT
(
)
VL
K
Io•Ro
K
Vin
Vf =
+
-OUT
-IN
-IN
Figure 11 — The PRM controls the factorized bus voltage, Vf, in proportion to output current to compensate for the output resistance, Ro, of the VTM. The VTM
output voltage is typically within 1% of the desired load voltage (VL) over all line and load conditions.
FPA NON-ISOLATED REMOTE LOOP
Remote
Loop
Control
±
Vo = VL 0.4%
VC
PC
TM
IL
VH
SC
SG
OS
NC
CD
+IN
+OUT
-OUT
+OUT
-OUT
Factorized
Power Bus
+S
L
O
A
D
NC
PR
PRM-AL
TM
VC
PC
VTM
+IN
-IN
+OUT
Vf = f (Vs)
Vin
–S
-OUT
-IN
Figure 12 — An external error amplifier or Point-of-Load IC (POLIC) senses the load voltage and controls the PRM output – the Factorized Bus – as a function of
output current, compensating for the output resistance of the VTM and for distribution resistance.
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 8 of 11
BEHAVIORAL MODELS
VI BRICK VTM LEVEL 1 DC BEHAVIORAL MODEL FOR 48 V TO 3 V, 70 A
ROUT
IOUT
+
+
1.7 mΩ
•
V I
1/16 • Iout
1/16 • Vin
+
–
+
–
VOUT
VIN
I
63 mA
K
–
–
©
Figure 13 —This model characterizes the DC operation of the VI BRICK VTM, including the converter transfer function and its losses. The model enables estimates
or simulations of output voltage as a function of input voltage and output load, as well as total converter power dissipation or heat generation.
VI BRICK VTM LEVEL 2 TRANSIENT BEHAVIORAL MODEL FOR 48 V TO 3 V, 70 A
0.12 nH
LOUT = 1.1 nH
ROUT
IOUT
IN
L
= 5 nH
1.7 mΩ
+
+
RCIN
RCOUT
1.3 mΩ
0.6 mΩ
1/16 • Vin
0.085 mΩ
•
V I
1/16 • Iout
4 µF
+
–
254 µF
+
–
CIN
COUT
VOUT
VIN
IQ
63 mA
K
–
–
©
Figure 14 —This model characterizes the AC operation of the VI BRICK VTM including response to output load or input voltage transients or steady state
modulations. The model enables estimates or simulations of input and output voltages under transient conditions, including response to a stepped load
with or without external filtering elements.
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 9 of 11
MECHANICAL DRAWINGS
Baseplate - Slotted Flange
Heat Sink (Transverse)
Figure 15 —Module outline
Recommended PCB Pattern
(Component side shown)
Figure 16 —PCB mounting specifications
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
Page 10 of 11
Warranty
Vicor products are guaranteed for two years from date of shipment against defects in material or workmanship when in
normal use and service. This warranty does not extend to products subjected to misuse, accident, or improper application
or maintenance. Vicor shall not be liable for collateral or consequential damage. This warranty is extended to the original
purchaser only.
EXCEPT FOR THE FOREGOING EXPRESS WARRANTY, VICOR MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING,
BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Vicor will repair or replace defective products in accordance with its own best judgement. For service under this warranty,
the buyer must contact Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products
returned without prior authorization will be returned to the buyer. The buyer will pay all charges incurred in returning
the product to the factory. Vicor will pay all reshipment charges if the product was defective within the terms of this
warranty.
Information published by Vicor has been carefully checked and is believed to be accurate; however, no responsibility is
assumed for inaccuracies. Vicor reserves the right to make changes to any products without further notice to improve
reliability, function, or design. Vicor does not assume any liability arising out of the application or use of any product or
circuit; neither does it convey any license under its patent rights nor the rights of others. Vicor general policy does not
recommend the use of its components in life support applications wherein a failure or malfunction may directly threaten
life or injury. Per Vicor Terms and Conditions of Sale, the user of Vicor components in life support applications assumes
all risks of such use and indemnifies Vicor against all damages.
Vicor’s comprehensive line of power solutions includes high density AC-DC and
DC-DC modules and accessory components, fully configurable AC-DC and DC-DC
power supplies, and complete custom power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for
its use. 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.
Intellectual Property Notice
Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent
applications) relating to the products described in this data sheet. Interested parties should contact Vicor's Intel-
lectual Property Department.
The products described on this data sheet are protected by the following U.S. Patents Numbers:
5,945,130; 6,403,009; 6,710,257; 6,911,848; 6,930,893; 6,934,166; 6,940,013; 6,969,909; 7,038,917;
7,145,186; 7,166,898; 7,187,263; 7,202,646; 7,361,844; D496,906; D505,114; D506,438; D509,472; and for
use under U.S. Pat. Nos. 6,975,098 and 6,984,965.
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
email
Customer Service: custserv@vicorpower.com
Technical Support: apps@vicorpower.com
Voltage Transformation Module
VT048A030T070FP
vicorpower.com
Rev. 1.0
3/08
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