V-Infinity, LLC, 9615 SW Allen Blvd Suite 103, Beaverton, OR 97005

www.v-infinity.com

1-866-372-1258

PTK25 Screw Terminal Series DC-DC Converter

2 / 4

REV. 06-2007

General

Parameter

Continuous/Description

Min

Nom

Max

Units

Efficiency

Typical at full load

77%

83%

Dielectric withstand

Input/case, input/output, output/case

500

VAC

Insulation resistance

at 500 VDC

100M

Ohms

Agency standards

Approved to UL60950, CSA C22.2 No. 60950, TUV EN60950

Case material

Zn

Material flammability

94 V-0

Weight

80

grams

(2.82)

(ounces)

MTBF

MIL-HDBK-217F

450k

hours

Operating temperature Regular models - see derating curve.

-20

+71

°C

Extended temperature models

-40

+85

°C

Storage temperature

-40

+105

°C

Humidity

Operating(non-condensing)

5%

95%

RH

Protection

Parameter

Conditions/Description

Min

Nom

Max

Units

Over-current

105%

135%

Over-voltage

110%

140%

Note: 4 Continuous operation in a protected state may compromise long-term reliability.

Output

Parameter

Conditions/Description

Min

Nom

Max

Units

Output trim range

With external trim resistors

-5%

+5%

Set point accuracy

Single output

-2%

+2%

Dual output

-3%

+3%

Line regulation

Single output models

-0.25%

+0.25%

(Low line to high line)

Dual output models

-2.5%

+2.5%

Triple: main output (Vout)

-0.25%

+0.25%

auxillary outputs (+Vaux / -Vaux)

-5%

+5%

Load regulation

Single output models - no load to full load

-0.25%

+0.25%

Dual output models - balanced loads

-2.5%

+2.5%

Triple: main output (Vout)

-0.25%

+0.25%

auxillary outputs(+Vaux / -Vaux) - with 10% load

-5%

+5%

on Vout and balanced loads on +Vaux and -Vaux

Minimum load

Converters will not be damaged if loading conditions are less than minimum specified loads,

but regulation specs may not be met

Ripple and noise

See chart

Input

Parameter

Conditions/Description

Min

Nom

Max

Units

Input voltage range

18

24

36

VDC

36

48

72

VDC

Remote on/off control

2.5V

(open)

5.5V

Output turn-off

0V

(short)

0.8V

Switching frequency

Constant

300

KHz

Note: 3 Output defaults to “on” when there is no connection to the “CNT” pin.