PT4313 datasheet(3/9 Pages) TI

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PT4310 Series —48V

6-W Low-Profile Dual-Output

Isolated DC/DC Converter

SLTS146B - MARCH 2001 - REVISED MAY 2004

Specifications (Unless otherwise stated, Ta =25°C, Vin =53 V, Cout =0 µF, and Io1 = Io2 =Iotyp)

PT4310 Series

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Ouput Power

Po(tot)

——6

Output Current

Io1, Io2 (1)

Over Vin range

PT4311 ( ±5 V)

0.2

(2)

0.6

(any one output)

PT4313 (±12 V)

0.05 (2)

0.25

0.45

PT4314 (±24 V)

0.02 (2)

0.125

Io1 +Io2 (1)

Over Vin range

PT4311

0.4

—

1.2

(sum-total from both outputs)

PT4313

0.1

—

0.5

PT4314

0.04

—

0.25

Input Voltage Range

Vin

Over Io range

—

Set Point Voltage

Vo1, Vo2 (1)

PT4311

4.95

5.05

5.15

PT4313

11.85

12.15

PT4314

23.28

24.72

Temperature Variation

Regtemp

–40 >Ta> +85°C

PT4311

—

±0.5

—

PT4313

—

±1

—

PT4314

—

±1

—

Line Regulation

Regline

Over Vin range

—

±25

±40

Load Regulation

Regload

Iox =0.6 A, 0.2 A ≤Ioy≤ 0.6 A

PT4311

—

100

150

Iox =0.25 A, 0.05 A ≤Ioy≤ 0.25 A

PT4313

—

250

350

Iox =0.125 A, 0.02 A ≤Ioy≤ 0.125 A PT4314

—

275

500

Total Output Voltage Variation

∆Votot

Over Vin and load range

PT4311, PT4314

—

±5

—

%Vo

–40°C >Ta > +85°C

PT4313

—

±4

—

No-load Output Voltage

Vo(no-load)

Io1 =Io2 = 0

PT4311

—

5.4

5.9

PT4313

—

12.7

PT4314

—

24.8

Efficiency

PT4311

—

PT4313

—

PT4314

—

Vo Ripple (pk-pk)

20 MHz bandwidth

PT4311

—

100

mVpp

PT4313, PT4314

—

150

Transient Response

ttr

20%

≤ Ioy≤ 75% of Iotyp, 25%load step Iox

—

250

—

µs

∆Vtr

Vox over/undershoot

PT4311

—

±75

—

PT4313

—

±200

—

PT4314

—

±500

—

Output Voltage Adjust Range

∆±Vo adj

Both outputs adjusted simulatenously

—

%Vo

Current Limit Threshold

ILim

Over Vin range,

PT4311, PT4313

—

2.5

—

∆Vo=10%Vonom

PT4314

—

0.4

—

Short Circuit Current

Isc

PT4311, PT4313

—

PT4314

—

0.25

—

Inrush Current

Iir

On start-up

—

0.5

—

tir

—1

—ms

Switching Frequency

ƒo

Over Vin range

400

—

520

kHz

Under-Voltage Lockout

UVLO

—

Remote On/Off (Pin 11)

Referenced to –Vin (pin 17)

Input High Voltage

VIH

—

Open (3)

Input Low Voltage

VIL

–0.1

—

Input Low Cunrrent

IIL

—

–0.2

–

Standby Input Current

Iin standby

pins 11 & 17 connected

—

Internal Input Capacitance

Cin

—1

—µF

External Output Capacitance

Cout

Sum-total capacitance, connected from

PT4311

—

120 (4)

both outputs to COM (pin 2)

PT4313

—

47 (4)

µF

PT4314

—

20 (4)

Isolation Voltage

Input - output

1500

—

Capacitance

—

1100

—

Resistance

——M

Ω

Notes:

(1)

Io2 and Vo2 indicates the magnitudes of the negative output parameters. Parameters within vertical brackets are quoted absolute.

(2) The DC/DC converter will operate at no load with reduced specifications. See “No-load Output Voltage” specification.

(3) The Remote On/Off (pin 11) has an internal pull-up. If the pin is left open the module will operate when input power is applied. Refer to the application

notes for interface considerations.

(4) Output capacitors are not required for proper operation. If added, Oscon® or tantalum types are recommended for operation below 0°C ambient.

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