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PT4480 Series Comparison

Output Voltage

Configuration for

Functionality

Program Range

Current Sharing

PT4481

Regulator

1.3V– 3.5V

N+1 with other PT4481s

PT4482

Regulator

1.3V– 3.5V

With PT4499 boosters

PT4499

PT4482 Booster

N/A

Used only with PT4482

PT4483

Regulator

4.6V–5.7V

N+1 with other PT4483s

PT4484

Regulator

4.6V–5.7V

With PT4498 boosters

PT4498

PT4484 Booster

N/A

Used only with PT4484

PT4485

Regulator

6.5V– 17.5V

N+1 with other PT4485s

PT4486

Regulator

6.5V–17.5V

With PT4497 boosters

PT4497

PT4486 Booster

N/A

Used only with PT4486

PT4482—48V

100-W 30-A Programmable

Isolated DC/DC Converter

Programming Information

VID4=1 VID4=0

VID3 VID2 VID1 VID0

Vout

Vout

1

1

1

1

2.0V

1.30V

1

1

1

0

2.1V

1.35V

1

1

0

1

2.2V

1.40V

1

1

0

0

2.3V

1.45V

1

0

1

1

2.4V

1.50V

1

0

1

0

2.5V

1.55V

1

0

0

1

2.6V

1.60V

1

0

0

0

2.7V

1.65V

0

1

1

1

2.8V

1.70V

0

1

1

0

2.9V

1.75V

0

1

0

1

3.0V

1.80V

0

1

0

0

3.1V

1.85V

0

0

1

1

3.2V

1.90V

0

0

1

0

3.3V

1.95V

0

0

0

1

3.4V

2.00V

0

0

0

0

3.5V

2.05V

Logic 0 = Connect to (–)Remote Sense, pin 20

Logic 1 = Open circuit (no pull-up resistors)

VID3 & VID4 must not be changed while unit is operating

PT4482

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Output Current

0

—

30

A

Input Voltage Range

36

4875

VDC

Set Point Voltage Tolerance

—

±1

±1.5

Temperature Variation

–40°

—

±0.5

—

Line Regulation

—

±0.1

±1

Load Regulation

—

±0.2

±1

Total Output Voltage Variation

Includes set-point, line, load,

—

–40°

Efficiency

η

—

89

—

—

87

—

%

—

81

—

20MHz bandwidth

—

60

75

—

45

55

Transient Response

—

N/A

—

µs

—

1

—

—

75

—

µs

—

±5

—

Current Limit

—35

—

A

foldback continuous limit

Current Share Tolerance

with PT4499 booster

—

±10

—

%

Over-Voltage Protection

OVP

Shutdown and latch off

—

125

—

Switching Frequency

270

300

350

kHz

Under-Voltage Lockout

UVLO

—

34.5

—

V

Inhibit (Pin 3)

Input High Voltage

2.5

—

V

Input Low Voltage

–0.5

—

+0.8

Input Low Current

—

–0.2

—

mA

Standby Input Current

pins 3 & 2 connected

—

4

10

mA

Internal Input Capacitance

—3

—µF

External Output Capacitance

0

—

10,000

µF

Isolation Voltage

Input–output/input–case

1500

—

—

V

Capacitance

Input to output

—

1100

—

pF

Resistance

Input to output

10

—

—

M

Ω

Operating Temperature Range

-40

—

°C

Over-Temperature Shutdown

OTP

Case temperature, auto reset

—

120

—

°C

Storage Temperature

—

-40

—

+125

°C

Reliability

MTBF

Per Bellcore TR-332

1.4

—

—

Mechanical Shock

—

Per Mil-Std-883D, method 2002.3,

—

500

—

G’s

1mS, half-sine, mounted to a fixture

Mechanical Vibration

—

Mil-Std-883D, Method 2007.2

Horizontal

—

—G’s

20-2000Hz, pcb mounted

Weight

—

—

—

90

—

grams

Flammability

—

Materials meet UL 94V-0

Notes:

(1) The Inhibit (pin 3) has an internal pull-up, which if left open circuit allows the converter to operate when input power is applied. The open-circuit is

limited to 6.5V. Refer to the application notes for interface considerations.

(2) See Safe Operating Area curves or contact the factory for the appropriate derating.

(3) The case pins on through-hole pin configuration (suffix A) must be soldered. For more information see the applicable package outline drawing.

# This specification covers only the PT4482 regulator and PT4499 current booster.

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