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PT4470 Series Comparison

Output Voltage

Configuration for

Functionality

Program Range

Current Sharing

PT4471

Regulator

1.3V– 3.5V

N+1 with other PT4471s

PT4472

Regulator

1.3V– 3.5V

With PT4495 boosters

PT4495

PT4472 Booster

N/A

Used only with PT4472

PT4473

Regulator

4.6V–5.7V

N+1 with other PT4473s

PT4474

Regulator

4.6V–5.7V

With PT4494 boosters

PT4494

PT4474 Booster

N/A

Used only with PT4474

PT4475

Regulator

6.5V– 17.5V

N+1 with other PT4475s

PT4476

Regulator

6.5V–17.5V

With PT4493 boosters

PT4493

PT4476 Booster

N/A

Used only with PT4476

PT4471—24V

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

PT4471

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Output Current

0

—

30

A

Input Voltage Range

18

24

36

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 other PT4471 modules in N+1

—

±10

—

%

Over-Voltage Protection

OVP

Shutdown and latch off

—

125

—

Switching Frequency

270

300

350

kHz

Under-Voltage Lockout

UVLO

—

17

—

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

Suffixes A, C—

—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 PT4471 regulator.

#