VT048A480T006FP - Vicor Corporation

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 1 of 13

Product Grade Temperatures (°C)

Grade Operating Storage

T = -40 to +100 -40 to +125

Baseplate

F= Slotted flange

T= Transverse heat sink[a]

[a]Contact factory

PRMTM Regulator

Product Overview

The VI BRICK Pre-Regulator Module is a very efficient non-isolated regulator specifically

designed to provide a controlled Factorized Bus distribution voltage for powering

downstream VI BRICK Voltage Transformation Modules. In combination, VI BRICK PRMs

and VTMsTM form a complete DC-DC converter subsystem offering all of the unique

benefits of Vicor’s Factorized Power Architecture (FPA): high density and efficiency; low

noise operation; architectural flexibility; extremely fast transient response; elimination of

bulk capacitance at the Point-of-Load (POL); in a thermally enhanced package.

Applications

•Solid state lighting

•Stadium displays

•Industrial controls

•Avionics

•Underseas

•RF Amplifiers

•Microprocessor and DSP

requiring fast response

•100°C baseplate operation

•Vin range: 18 – 60 Vdc

•Factorized Power

•High density: up to 156 W/in3

•Small footprint: 1.64 and 2.08 in2

•Height above board: 0.37 in (9.5 mm)

•Low weight: 1.07 oz (30.4 g)

•ZVS buck-boost regulator

•Typical efficiency: 95%

•1.35 MHz switching frequency

•Low noise operation

•Architectural flexibility

•Lead free wave solder compatible

•Agency approvals

Features

PR 036 A 480 T 012 F P

Output

Voltage

Designator

(=VOUT x10)

Output

Power

Designator

(=POUT /10)

Part Numbering

Pre-Regulator

Module

Input

Voltage

Designator

Package

Size

Pin Style

P = Through hole

Size:

1.91 x 1.09 x 0.37 in

48,6 x 27,7 x 9,5 mm

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 2 of 13

Parameter Values Unit Notes

+In to -In -1.0 to 85.0 Vdc

PC to -In -0.3 to 6.0 Vdc

PR to -In -0.3 to 9.0 Vdc

IL to -In -0.3 to 6.0 Vdc

VC to -In -0.3 to 18.0 Vdc

+Out to -Out -0.3 to 59 Vdc

SC to -Out -0.3 to 3.0 Vdc

VH to -Out -0.3 to 9.5 Vdc

OS to -Out -0.3 to 9.0 Vdc

CD to -Out -0.3 to 9.0 Vdc

SG to -Out 100 mA

Continuous output current 2.5 Adc

Continuous output power 120 W

Operating temperature -40 to +100 °C T-Grade; baseplate

Storage temperature -40 to +125 °C T-Grade

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

SPECIFICATIONS

Parameter Min Typ Max Unit Notes

Input voltage range 18 36 60 Vdc

Input dV/dt 1 V/µs

Input undervoltage turn-on 17 17.6 Vdc

Input undervoltage turn-off 15.2 15.9 Vdc

Input overvoltage turn-on 60 62 Vdc

Input overvoltage turn-off 63 65 Vdc

Input quiescent current 0.5 1 mA PC low

Input current 3.5 Adc

Input reflected ripple current 586 mA p-p See Figures 3 & 4

No load power dissipation 3 6 W

Internal input capacitance 5 µF Ceramic

Recommended external input capacitance 100 µF See Figure 4 for input filter circuit.

Source impedance dependent

Input Specifications (Conditions are at 36 Vin, 48 Vf [a], full load, and 25°C ambient unless otherwise specified)

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.

[a] Vf is factorized bus voltage (see Figure 15).

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 3 of 13

SPECIFICATIONS (CONT.)

Figure 3 — Input reflected ripple current

+IN

–IN

100 μF

Al-Electrolytic

Reflected

Ripple

Measurement 2.37 kΩ

+ OUT

– OUT

10 A

PRM

+IN +OUT

-OUT

-IN

Figure 4 — Input filter capacitor recommendation

INPUT WAVEFORMS

Figure 1 — Vf and PC response from power up Figure 2 — Vf turn-on waveform with inrush current – PC enabled

[a] See Input Fuse Recommendations section

[a]

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 4 of 13

Parameter Min Typ Max Unit Note

Output voltage range 26 48 55 Vdc Factorized Bus voltage (Vf) set by ROS

Output power 0 120 W

Output current 0 2.5 Adc

DC current limit 2.6 2.96 3.3 Adc ILpin floating

Average short circuit current 1.25 A Auto recovery

Set point accuracy 1.5 %

Line regulation 0.1 0.2 % Low line to high line

Load regulation 0.1 0.2 % No CD resistor

Load regulation (at VTM output) 1.0 2.0 % Adaptive Loop

Current share accuracy 5 10 %

Efficiency

Full load 95 % See Figure 5,6 & 7

Output overvoltage set point 56 59.4 Vdc

Output ripple voltage

No external bypass 1.51 3.5 % Factorized Bus, see Figure 12

With 10 µF capacitor 0.42 1.0 % Factorized Bus, See Figure 13

Switching frequency 1.26 1.35 1.46 MHz Fixed frequency - across entire operating range

Output turn-on delay

From application of power 74 250 ms See Figure 1

From PC pin high 100 µs See Figure 2

Internal output capacitance 5 µF Ceramic

Factorized Bus capacitance 47 µF

Output Specifications (Conditions are at 36 Vin, 48 Vf [a], full load, and 25°C ambient unless otherwise specified)

SPECIFICATIONS (CONT.)

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 5 of 13

SPECIFICATIONS (CONT.)

Efficiency vs. Output Current

75.

100

0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

Output Current (A)

Efficiency (%)

18 V

36 V

60 V

Vin

Figure 5 — Efficiency vs. output current at 48 Vf

Efficiency vs. Output Current

100

0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

Output Current (A)

Efficiency (%)

18 V

36 V

60 V

Vin

Figure 6 — Efficiency vs. output current at 36 Vf

OUTPUT WAVEFORMS

Efficiency vs. Output Current

100

0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

Output Current (A)

Efficiency (%)

18 V

36 V

60 V

Vin

Figure 7 — Efficiency vs. output current at 26 Vf

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 6 of 13

SPECIFICATIONS (CONT.)

OUTPUT WAVEFORMS

Figure 9 — Transient response; PRM alone 18 Vin, 0-2.5-0 A no load

capacitance, local loop

Figure 8 — Transient response; PRM alone 36 Vin, 0-2.5-0 A, no load

capacitance, local loop

Figure 10 — Transient response; PRM alone 60 Vin, 0-2.5-0 A no load

capacitance, local loop.

Figure 11 — PC during fault – frequency will vary as a function of line voltage

Figure 12 — Output ripple full load no bypass capacitance. Vf = 48 Vdc Figure 13 — Output ripple full load 10 µF bypass capacitance. Vf = 48 Vdc

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 7 of 13

SPECIFICATIONS (CONT.)

Parameter Min Typ Max Unit Notes

MTBF

MIL-HDBK-217F 2.2 Mhrs 25°C, GB

Agency approvals CTÜVus UL/CSA 60950-1, EN60950-1

CE Mark Low voltage directive

RoHS Complies wih RoHS

Mechanical parameters See Mechanical Drawings, Figures 19 & 20

Weight 1.07/30,4 oz/g

Dimensions

Length 1.91/48,6 in/mm

Width 1.09/27,7 in/mm

Height 0.37/9,5 in/mm

Thermal

Over temperature shutdown 130 135 140 °C junction temperature

Thermal capacity 23.8 Ws/°C

Baseplate to ambient 8.8 °C/W

Baseplate to ambient; 1000 LFM 3.0 °C/W

Baseplate to sink; flat, greased surface 0.40 °C/W

Baseplate to sink; thermal pad 0.36 °C/W

General Specifications

Parameter Min Typ Max Unit Notes

VC (VTM Control)

Pulse width 81218ms

Peak voltage 12 14 18 V Referenced to –Out

PC (Primary Control)

DC voltage 4.8 5.0 5.2 Vdc Referenced to –In

Module disable voltage 2.3 2.4 Vdc Referenced to –In

Module enable voltage 2.5 2.6 Vdc

Disable hysteresis 100 mV

Source only after start up; not to be used for

Current limit 1.75 1.90 mA aux. supply; 100 kΩminimum load

impedance to assure start up.

Enable delay time 100 µs

Disable delay time 1 µs

IL (Current Limit Adjust)

Voltage 1 V

Accuracy ± 15 % Based on DC current limit set point

PR (Parallel Port)

Voltage 0.5 3.5 V Referenced to SG; See description Page 8

Source current 1 mA

External capacitance 100 pF

VH (Auxiliary Voltage) Typical internal bypass C=0.1 µF

Range 8.7 9.0 9.3 Vdc Maximum external C=0.1 µF, referenced to SG

Regulation 0.04 %/mA

Current 5 mA p

SC (Secondary Control)

Voltage 1.23 1.24 1.25 Vdc Referenced to SG

Internal capacitance 0.22 µF

External capacitance 0.7 µF

OS (Output Set)

Set point accuracy ± 1.5 % Includes 1% external resistor

Reference offset ± 4 mV

CD (Compensation Device)

External resistance 20 ΩOmit resistor for regulation at output of PRM

Auxiliary Pins

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 8 of 13

PIN / CONTROL FUNCTIONS

Figure 14 — VI BRICK PRM pin configuration (viewed from pin side).

+In / -In DC Voltage Ports

The VI BRICK maximum input voltage should not be exceeded. PRMs have

internal over / undervoltage lockout functions that prevent operation

outside of the specified input range. PRMs will turn on when the input

voltage rises above its undervoltage lockout. If the input voltage exceeds

the overvoltage lockout, PRMs will shut down until the overvoltage fault

clears. PC will toggle indicating an out of bounds condition.

+Out / -Out Factorized Voltage Output Ports

These ports provide the Factorized Bus voltage output. The –Out port is

connected internally to the –In port through a current sense resistor. The

PRM has a maximum power and a maximum current rating and is

protected if either rating is exceeded. Do not short –Out to –In.

VC – VTM Control

The VTM Control (VC) port supplies an initial VCC voltage to downstream

VTMs, enabling the VTMs and synchronizing the rise of the VTM output

voltage to that of the PRM. The VC port also provides feedback to the

PRM to compensate for voltage drop due to the VTM output resistance.

The PRM’s VC port should be connected to the VTM VC port. A PRM VC

port can drive a maximum of two (2) VTM VC ports.

PC – Primary Control

The PRM voltage output is enabled when the PC pin is open circuit

(floating). To disable the PRM output voltage, the PC pin is pulled low.

Open collector optocouplers, transistors, or relays can be used to control

the PC pin. When using multiple PRMs in a high power array, the PC ports

must be tied together to synchronize their turn on. During an abnormal

condition the PC pin will pulse (Fig.11) as the PRM initiates a restart cycle.

This will continue until the abnormal condition is rectified. The PC should

not be used as an auxiliary voltage supply, nor should it be switched at a

rate greater than 1 Hz.

TM – Factory Use Only

IL – Current Limit Adjust

The PRM has a preset, maximum, current limit set point. The IL port may

be used to reduce the current limit set point to a lower value. See “adjust-

ing current limits” on page 11.

PR – Parallel Port

The PR port signal, which is proportional to the PRM output power,

supports current sharing of two PRMs. To enable current sharing, PR ports

should be interconnected. Bypass capacitance should be used when

interconnecting PR ports and steps should be taken to minimize coupling

noise into the interconnecting bus. Terminate this port with a 10 k

equivalent resistance to SG, e.g. 10 k for a single PRM, 20 k each for 2

PRMs in parallel, 30 k each for 3 PRMs in parallel etc.. Please consult Vicor

Applications Engineering regarding additional considerations when

paralleling more than two PRMs.

VH – Auxiliary Voltage

VH is a gated (e.g. mirrors PC), non-isolated, nominally 9 Volt, regulated

DC voltage (see “Auxiliary Pins” specifications, on Page 7) that is

referenced to SG. VH may be used to power external circuitry having a

total current consumption of no more than 5 mA under either transient or

steady state conditons including turn-on.

SC – Secondary Control

The load voltage may be controlled by connecting a resistor or voltage

source to the SC port referenced to SG. The slew rate of the output

voltage may be controlled by controlling the rate-of-rise of the voltage at

the SC port (e.g., to limit inrush current into a capacitive load).

SG – Signal Ground

This port provides a low inductance Kelvin connection to –In and should be

used as reference for the OS, CD, SC,VH and IL ports.

OS – Output Set

The application-specific value of the Factorized Bus voltage (Vf) is set by

connecting a resistor between OS and SG. Resistor value selection is shown

in Table 1 on Page 9, and described on Page 10. If no resistor is connected,

the PRM output will be approximately one volt. If set resistor is not collo-

cated with the PRM, a local bypass capacitor of ~200 pF may be required.

CD – Compensation Device

Adaptive Loop control is configured by connecting an external resistor

between the CD port and SG. Selection of an appropriate resistor value

(see Equation 2 on Page 10 and Table 1 on Page 9) configures the PRM to

compensate for voltage drops in the equivalent output resistance of the

VTM and the PRM-VTM distribution bus. If no resistor is connected to CD,

the PRM will be in Local Loop mode and will regulate the

+Out / –Out voltage to a fixed value.

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 9 of 13

APPLICATION INFORMATION

Overview of Adaptive Loop Compensation

Adaptive Loop compensation, illustrated in Figure 15, contributes to the

bandwidth and speed advantage of Factorized Power. The PRM moni-

tors its output current and automatically adjusts its output voltage to

compensate for the voltage drop in the output resistance of the VTM.

ROS sets the desired value of the VTM output voltage, Vout; RCD is set to

a value that compensates for the output resistance of the VTM (which,

ideally, is located at the point of load). For selection of ROS and RCD,

refer to Table 1 below or Page 10.

The VI BRICK’s bi-directional VC port :

1. Provides a wake up signal from the PRM to the VTM that

synchronizes the rise of the VTM output voltage to that of the PRM.

2. Provides feedback from the VTM to the PRM to enable the PRM to

compensate for the voltage drop in VTM output resistance, RO.

Factorized

Bus (Vf)

Vo = VL ± 1.0%

(Io•Ro)

Vf = VL +

Vin

ROS

RCD

PRM

+IN +OUT

-OUT

-IN

VTM

+IN +OUT

-OUT

+OUT

-OUT

-IN

Figure 15 — With Adaptive Loop control, the output of the VTM is regulated over the load current range with only a single interconnect between the PRM and

VTM and without the need for isolation in the feedback path.

Desired Load Voltage (Vdc) VI BRICK VTM P/N(1) Max VTM Output Current (A)(2) ROS (kΩ)(3) RCD (Ω)(3)

1.0 VT048A015T100FP 100 3.57 26.1

1.2 VT048A015T100FP 100 2.94 32.4

1.5 VT048A015T100FP 100 2.37 39.2

1.8 VT048A020T080FP 80 2.61 35.7

2.0 VT048A020T080FP 80 2.37 39.2

3.0 VT048A030T070FP 70 2.37 39.2

3.3 VT048A040T050FP 50 2.89 32.6

5.0 VT048A060T040FP 40 2.87 33.2

8.0 VT048A080T030FP 30 2.37 32.9

9.6 VT048A096T025FP 25 2.37 32.9

10 VT048A120T025FP 25 2.86 32.9

12 VT048A120T025FP 25 2.37 39.2

15 VT048A160T015FP 15 2.49 37.4

24 VT048A240T012FP 12.5 2.37 39.2

28 VT048A320T009FP 9.4 2.74 35.7

36 VT048A480T006FP 6.3 3.16 30.1

48 VT048A480T006FP 6.3 2.37 39.2

Table 1 — Configure the VI BRICK PRM/VTM for the desired output voltage.

Note:

(1) See Table 2 on page 10 for nominal Vout range and K factors.

(2) See “PRM output power vs. VTM output power” on Page 11

(3) 1% precision resistors recommended

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 10 of 13

APPLICATION INFORMATION

Factorized

Bus (Vf)

(IL•Ro)

Vf = VL +

Vin

0.4 μH

PRM-AL

+IN +OUT

-OUT

-IN

VTM

+IN +OUT

-OUT

+OUT

-OUT

-IN

Output Voltage Setting with Adaptive Loop

The equations for calculating ROS and RCD to set a VTM output

voltage are:

93100

ROS =(VL• 0.8395 ) – 1(1)

RCD =91238 + 1 (2)

ROS

VL= Desired load voltage

VOUT = VTM output voltage

K = VTM transformation ratio

(available from appropriate VTM data sheet)

Vf= PRM output voltage, the Factorized Bus (see Figure 16)

RO= VTM output resistance

(available from appropriate VTM data sheet)

IL= Load Current

(actual current delivered to the load)

Output Voltage Trimming (optional)

After setting the output voltage from the procedure above the output

may be margined down (26 Vf min) by a resistor from SC-SG using this

formula:

RdΩ=10000 Vfd

Vfs - Vfd

Where Vfd is the desired factorized bus and Vfs is the set factorized bus.

A low voltage source can be applied to the SC port to margin the load

voltage in proportion to the SC reference voltage.

An external capacitor can be added to the SC port as shown in Figure 16

to control the output voltage slew rate for soft start.

Figure 16 — Adaptive Loop compensation with soft start using the SC port.

Nominal Vout VTM

Range (Vdc) K Factor

0.8

↔

1.6 1/32

1.1

↔

2.2 1/24

1.6

↔

3.3 1/16

2.2

↔

4.4 1/12

3.3

↔

6.6 1/8

4.3

↔

8.8 1/6

6.5

↔

13.4 1/4

8.7

↔

17.9 1/3

13.0

↔

26.9 1/2

17.4

↔

36.0 2/3

26.0

↔

54.0 1

Table 2 — 048 input series VTM K factor selection guide

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 11 of 13

APPLICATION NOTES

OVP – Overvoltage Protection

The output Overvoltage Protection set point of the PR036A480T012FP is

factory preset for 56 V. If this threshold is exceeded the output shuts down

and a restart sequence is initiated, also indicated by PC pulsing. If the

condition that causes OVP is still present, the unit will again shut down.

This cycle will be repeated until the fault condition is removed. The OVP set

point may be set at the factory to meet unique high voltage requirements.

PRM Output Power Versus VTM Output Power

As shown in Figure 17, the PR036A480T012FP is rated to deliver 2.5 A

maximum, when it is delivering an output voltage in the range from 26 V

to 48 V, and 120 W, maximum, when delivering an output voltage in the

range from 48 V to 55 V. When configuring a PRM for use with a specific

VTM, refer to the appropriate VTM data sheet. The VTM input power can

be calculated by dividing the VTM output power by the VTM efficiency

(available from the VTM data sheet). The input power required by the VTM

should not exceed the output power rating of the PRM.

The Factorized Bus voltage should not exceed an absolute limit of 55 V,

including steady state, ripple and transient conditions. Exceeding this limit

may cause the internal OVP set point to be exceeded.

Parallel Considerations

The PR port is used to connect two PRMs in parallel to form a higher

power array. When configuring arrays, PR port interconnection terminating

impedance is 10 k to SG. See note Page 8 and refer to Application Note

AN002. Additionally one PRM should be designated as the master while all

other PRMs are set as slaves by shorting their SC pin to SG. The PC pins

must be directly connected (no diodes) to assure a uniform start up

sequence. Consult Vicor applications engineering for applications requiring

more than two PRMs.

Adjusting Current Limit

The current limit can be lowered by placing an external resistor between

the ILand SG ports (see Figure 18 for resistor values) . With the ILport

open-circuit, the current limit is preset to be within the range specified in

the output specifications table on Page 4.

Input Fuse Recommendations

A fuse should be incorporated at the input to the PRM, in series with the

+In port. A fast acting fuse, NANO2 FUSE 451/453 Series 10 A 125 V, or

equivalent, may be required to meet certain safety agency Conditions of

Acceptability. Always ascertain and observe the safety, regulatory, or other

agency specifications that apply to your specific application. For agency

approvals and fusing conditions, click on the link below:

http://www.vicorpower.com/technical_library/technical_documentation/quality_and_

certification/safety_approvals/

Product Safety Considerations

If the input of the PRM is connected to SELV or ELV circuits, the output of

the PRM can be considered SELV or ELV respectively.

If the input of the PRM is connected to a centralized DC power system

where the working or float voltage is above SELV, but less than or equal to

75 V, the input and output voltage of the PRM should be classified as a

TNV-2 circuit and spaced 1.3 mm from SELV circuitry or accessible

conductive parts according to the requirements of UL60950-1,

CSA 22.2 60950-1, EN60950-1, and IEC60950-1.

Application Notes

For PRM 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.

Desired PRM Output Current Limit (A)

100

0 0.5 1 1.5 2 2.5 3

Resistance (kΩ)

Figure 18 — Calculated external resistor value for adjusting current limit, actual

value may vary.

26 30 34 38 42 46 50 54

Factorized Bus Voltage (Vf)

2.30

2.35

2.40

2.45

2.50

2.55

Current (A)

28 32 36 40 44 48 52

2.25

2.20

2.15

22 24 56 58

Safe Operating Area

Figure 17 — PR036A480T012FP rating based on Factorized Bus voltage

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 Page 12 of 13

Figure 19 — Module outline

Figure 20 — PCB mounting specifications

MECHANICAL DRAWINGS

Recommended PCB Pattern

(Component side shown)

Baseplate - Slotted Flange Heat Sink (Transverse)

Pre-Regulator Module PR036A480T012FP vicorpower.com Rev. 1.1 5/08

Vicor Corporation

25 Frontage Road

Andover, MA, USA 01810

Tel: 800-735-6200

Fax: 978-475-6715

Customer Service: custserv@vicorpower.com

Technical Support: apps@vicorpower.com

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; 6,788,033; 6,940,013; 6,969,909; 7,038,917; 7,154,250; 7,166,898;

7,187,263; 7,202,646; 7,361,844; 7,368,957; RE40,072; D496,906; D506,438; D509,472; and for use under

U.S. Pat. Nos. 6,975,098 and 6,984,965