V048F080T030 datasheet(2/14 Pages) VICOR

2 / 14 page

PRM® Regulator

Rev 2.1

vicorpower.com

Page 2 of 14

09/2015

800 927.9474

P036F048T12AL

Overview of Adaptive Loop Compensation

Adaptive Loop compensation, illustrated in Figure 1, contributes to the

bandwidth and speed advantage of Factorized Power. The PRM

monitors 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 9.

The VI Chip’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.

+Out

–Out

+In

–In

P C

P R

VIN

– In

+In

– Out

+Out

– Out

+Out

0.01 µF

0.4 µH

10 Ω

10 kΩ

PRM® -AL

Module

VTM®

Module

Factorized

Bus (VF)

ROS

RCD

Output Power

Designator

(=Pf /10)

036

048

Regulator

Input Voltage

Designator

Product Grade Temperatures (°C)

Grade

Storage Operating (TJ)

-40 to125 -40 to125

Configuration

F = J-lead

T = Through hole

Nominal

Factorized Bus

Voltage

AL = Adaptive Loop

Figure 1 — 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.

General Specifications

Part Numbering

Desired Load Voltage (Vdc)

VTM P/N(1)

Max VTM Output Current (A)(2)

ROS (kΩ)(3)

RCD (Ω)(3)

1.0

V048F015T100

100

3.57

26.1

1.2

V048F015T100

100

2.94

32.4

1.5

V048F015T100

100

2.37

39.2

1.8

V048F020T080

2.61

35.7

2.0

V048F020T080

2.37

39.2

3.0

V048F030T070

2.37

39.2

3.3

V048F040T050

2.89

32.6

5.0

V048F060T040

2.87

33.2

8.0

V048F080T030

2.37

32.9

9.6

V048F096T025

2.37

32.9

V048F120T025

2.86

32.9

V048F120T025

2.37

39.2

V048F160T015

2.49

37.4

V048F240T012

12.5

2.37

39.2

V048F320T009

9.4

2.74

35.7

V048F480T006

6.3

3.16

30.1

V048F480T006

6.3

2.37

39.2

Table 1 — Configure your Chip Set using the PRM-AL

Note:

(1) See Table 2 on page 9 for nominal Vout range and K factors.

(2) See “PRM output power vs. VTM output power” on Page 10

(3) 1% precision resistors recommended

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