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V•I Chip Pre-Regulator Module

P036F048T12AL

Rev. 1.5

Page 1 of 14

• 36 V input V•I Chip

• Vin range 18 – 60 Vdc

• Low weight – 0.5 oz (15 g)

• Adaptive Loop feedback

• ZVS buck-boost regulator

• 1.35 MHz switching frequency

• 95% Efficiency

• 125˚C operation (Tj)

P036F048T12AL

Vin = 18 – 60 Vdc

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Regulator

Product Description

The V•I Chip Pre-Regulator Module is a very efficient

non-isolated regulator capable of both boosting and

bucking a wide range input voltage. It is specifically

designed to provide a controlled Factorized Bus

distribution voltage for powering downstream V•I Chip

Voltage Transformation Modules — fast, efficient,

isolated, low noise Point-of-Load (POL) converters. In

combination, PRMs and VTMs

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;

and elimination of bulk capacitance at the Point-of-Load

(POL).

In FPA systems, the POL voltage is the product of the

Factorized Bus voltage delivered by the PRM and the

"K-factor" (the fixed voltage transformation ratio) of a

downstream VTM. The PRM controls the Factorized Bus

voltage to provide regulation at the POL. Because VTMs

perform true voltage division and current multiplication,

the Factorized Bus voltage may be set to a value that is

substantially higher than the bus voltages typically

found in "intermediate bus" systems, reducing

distribution losses and enabling use of narrower

distribution bus traces. A PRM-VTM chip set can provide

up to 100 A, or 115 W at a FPA system density of

be located, or "factorized," remotely from the POL,

these power densities can be effectively doubled.

The PRM described in this data sheet features a unique

"Adaptive Loop" compensation feedback: a single wire

alternative to traditional remote sensing and feedback

loops that enables precise control of an isolated POL

voltage without the need for either a direct connection

to the load or for noise sensitive, bandwidth limiting,

isolation devices in the feedback path.

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

Case temperature during reflow

225

°C

MSL 5

Operating junction temperature

-40 to 125

°C

T-Grade

Storage temperature

-40 to 125

°C

T-Grade

-In

PC

VC

TM

+In

-Out

+Out

VTM

+Out

-Out

K

Ro

+Out

–Out

+In

–In

VC

PC

TM

IL

VH

PR

NC

SG

SC

PRM-AL

OS

NC

CD

Factorized

Vin

Vout

The P036F048T12AL is used with any 048 input series VTM to provide a regulated and

isolated output.

DC-DC Converter

Absolute Maximum Ratings

PRM