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PT4560 Series

30-W 48-V Input

Isolated DC/DC Converter

PT4560 SERIES

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Output Current

0.1

(1)

—

2.0

0.1

(1)

—

2.5

A

0.1

(1)

—

3.3

—

6.0

—

8.0

Input Voltage Range

36.0

48.0

75.0

V

Set Point Voltage Tolerance

—

±1

±1.5

—

±33

±50

mV

Temperature Variation

–40°

—

±0.5

—

Line Regulation

—

±0.2

±1.0

—

±7

±33

mV

Load Regulation

Vo

≥5.0V

—

±0.4

±1.0

—

±13

±33

mV

Total Output Voltage Variation

Includes set-point, line, load,

—

±2

—

–40°

—

±67

—

mV

Efficiency

η

—

85

—

—

87

—

—

84

—

%

—

84

—

—

80

—

—

69

—

20MHz bandwidth

—

1.0

2.0

—

50

75

Transient Response

—

100

200

µs

—

±3.0

±5.0

—

±100

±150

mV

Short Circuit Current

—

—

A

Switching Frequency

400

500

600

kHz

600

750

900

Under-Voltage Lockout

UVLO

—

34

—

V

—

33

—

Remote On/Off Input (pin 2)

Input High Voltage

2.5

—

V

Input Low Voltage

–0.2

—

+0.8

Input Low Current

–3

–6

–10

µA

Standby Input Current

pins 2 & 4 connected

—

8

16

mA

Internal Input Capacitance

—

0.66

—

µF

External Output Capacitance

260

330

600

(3)

µF

260

330

Isolation Voltage

Input-output/input-case

1500

—

—

Vdc

Capacitance

Input-output

—

1200

—

pF

Resistance

Input-output

10

—

—

M

Ω

Operating Temperature Range

—

°C

Maximum Case Temperature

—

—

100

°C

Storage Temperature Range

-40

—

+125

°C

Reliability

MTBF

Per Bellcore TR-332

4.9

—

—

Mechanical Shock

—

Per Mil-Std-883D, method 2002.3,

—

500

—

G’s

1mS, half-sine, mounted to a fixture

Mechanical Vibration

—

Per Mil-Std-883D, method 2007.2,

—20

—G’s

20-2000Hz, soldered in board

Weight

—

—

—

40

—

grams

Flammability

—

Materials meet UL 94V-0

Notes:

(1) The DC/DC converter will operate at no load with reduced specifications.

(2) The Remote On/Off input has an internal pull-up. If it is left open circuit the PT4560 will operate when input power is applied. A low-leakage

(<100nA) MOSFET is recommended to control this input. The open-circuit voltage is less than 10V. See application notes for interface considerations.

(3) Output capacitor values are absolute. Allowances must be made for any additional de-coupling capacitors and the total external capacitor tolerance.

The value of external capacitance is limited due to regulator startup current requirements. Consult the factory for further details.

(4) For operation below 0°C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalum or Oscon® types.

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

Not Recommended For New Designs