P048T048M24AL【PDF 2/14 页】V.I CHIP PRM REGULATOR 48V 240W

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Not Recommended for New Designs

General Specifications

Part Numbering

V?I Chip Regulator

P

Regulator

048

Input Voltage

Designator

F

Configuration

F = J-lead

048

Nominal

Factorized Bus

T

Product Grade Temperatures (°C)

Grade Storage Operating (T J )

24

Output Power

Designator

AL

AL = Adaptive Loop

T = Through hole

Voltage

T -40 to125 -40 to125

(=P f /10)

M -65 to125 -55 to125

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. R OS sets the desired value of the VTM output voltage, Vout; R CD

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 R OS and

R CD , refer to Table 1 below or Page 9.

The V?I 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, R O .

V C

V H

0.01 μF

P C

T M

S C

S G

Factorized

+In

+Out

10 k Ω

I L

N C

P R

PRM? -AL

Module

+I n +O u t

O S

N C

C D

R OS

R CD

Bus (V F )

0.4 μH

TM

VC

PC

+Out

VTM?

Module

– Out

L

O

A

V IN

–I n

–O u t

10 Ω

– In

K

Ro

– Out

D

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.

Desired Load Voltage (Vdc)

1.0

1.2

1.5

1.8

2.0

3.0

3.3

5.0

8.0

9.6

10

12

15

24

28

36

48

VTM P/N (1)

V048F015T100

V048F015T100

V048F015T100

V048F020T080

V048F020T080

V048F030T070

V048F040T050

V048F060T040

V048F080T030

V048F096T025

V048F120T025

V048F120T025

V048F160T015

V048F240T012

V048F320T009

V048F480T006

V048F480T006

Max VTM Output Current (A) (2)

100

100

100

80

80

70

50

40

30

25

25

25

15

12.5

9.4

6.3

6.3

R OS (k Ω ) (3)

3.57

2.94

2.37

2.61

2.37

2.37

2.89

2.87

2.37

2.37

2.86

2.37

2.49

2.37

2.74

3.16

2.37

R CD ( Ω ) (3)

26.1

32.4

39.2

35.7

39.2

39.2

32.6

33.2

32.9

32.9

32.9

39.2

37.4

39.2

35.7

30.1

39.2

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

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

vicorpower.com

800-735-6200

V?I Chip Regulator

P048F048T24AL

Rev. 3.9

Page 2 of 14

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