V15

2

SPECIFICATIONS

All Specifications Typical At Nominal Line, Full Load, and 25℃ Unless Otherwise Noted

INPUT SPECIFICATIONS:

GENRAL SPECIFICATIONS:

Input Voltage Range....……………........….......... 24V .................. 18-36V

Efficiency

.................…..................................……..........…....... See Table

48V ................. 36-75V

Isolation Voltage ........... Input/Output, Input/Case, Output/Case ..

…....…..….. 1500VDC min.

Input Surge Voltage (100ms max.)

……............. 24V …....... 50Vdc max.

Isolation Resistance ...............

48V

.….... 100Vdc max.

Isolation Capacitance

…………………..…………..………..… 4000pF typ.

Under voltage

lockout ……….….. 24Vin Power Up …..…………..…. 17V

Switching Frequency ........

.…. 48S12&48S28&48S32 .….... 300KHz typ.

24Vin Power D

own …..……….…. 16V

Others

……………………... 250KHz typ.

48Vin Power Up

…….….…........ 35V

Operating Case Temperature

………………………………. -40℃ to 100℃

48Vin Power Down

………......... 33V

Storage Temperature ……………....…....…….............. -55℃ to +105℃

Input over voltage protection

… 24Vin Turn off …. 40V, Turn on ….. 38V

Thermal Shutdown, Case Temp. .………………..……..……. 110℃ typ.

48Vin Turn off

…. 80V, Turn on ….. 77V

Humidity .................................................... 95% RH max. Non Condensing

Opto Isolated Remote On/Off (note6)

MTBF

………. MIL-HDBK-217F, GB, 25℃, Full Load ……… 450Khrs typ.

Input Filter ………………………………………………..….……... PI Type

Dimensions ........................ 4.60

2.40x0.50 Inches(116.8x61.012.7 mm)

OUTPUT SPECIFICATIONS:

Case Material ................….....…… Aluminum Baseplate with Plastic Case

Voltage Accuracy ...................

.......................………............

1.0% max.

Weight

…………………………………………………………….……… 220g

Transient Response:25% Step Load Change .………….…….… <500us

NOTE:

External Trim Adj. Range ………………………………...………

 60-110%

1. Measured from high line to low line.

Load share Accuracy

…….……………

10% at 50% to 100% Full Load

2. Measured from full load to zero load.

Auxiliary output voltage/current

……………… 10

3Vdc/20mA max.

3. Output ripple and noise measured with 10uF tantalum and 1uF

Ripple & Noise, 20MHz BW

ceramic capacitor across output.

12

V …….....….... 60mV RMS max., 120mV pk-pk max.

4. The output adjustment circuit and trim equations show as figure1

24

V …………... 100mV RMS max., 240mV pk-pk max.

and figure2.

28

V …………... 100mV RMS max., 280mV pk-pk max.

5. An external input capacitor 220uF for all models are recommended to

32

V ……….….. 120mV RMS max., 320mV pk-pk max.

reduce input ripple voltage.

48

V ……….….. 200mV RMS max., 480mV pk-pk max

6. Standard model is n

egative logic , suffix “P” to the model number with

Temperature Coefficient

....................……….........….....

0.03%/C max.

positive logic. (refer application note)

Short Circuit Protection

.........………………......................... Continuous

7. If the remote sense feature is not to be used, the +sense pin should be

Line Regulation (note

1) ……………….………..................….

0.2% max.

connected to the +Vout pin and the

–sense pin should be connected

Load Regulation (note

2) ………………………….........…......

0.5% max.

to the -Vout pin. (refer application note Item 6.9)

Over Voltage Protection Trip Range, % Vo Nom. …................. 115-140%

Current Limit ................

....……………….... 110%-150% Nominal Output

Start up Time

…………………………….…………….…..…... 160ms typ.

CASE FB

Mounting Through

3.5mm 4Pl.

Tolerances

Inches: .XX±0.02 .XXX±0.010

±0.004

Millimeters: .X±0.5

.XX±0.25

±0.1

All Dimensions In Inches(mm)

Pin DIA

3.949(100.30)

3.799(96.49)

3.649(92.68)

3.499(88.87)

3.349(85.06)

0.020(5.05)

4.20(106.7)

4.60(116.8)

TRIM

PC/NC

AUX

IOG

16

15

13

14

-V Input

+V Input

+On/Off

-On/Off

-S

+S

-V Output

+V Output

5-7

8-10

12

11

3

4

2

1

PIN NUMBER

5

6

7

8

9

10

4

3

2

1

4.099(104.11)

PIN CONNECTIONS

FUNCTION

Output Voltage = TRIM

Terminal Voltage * Nominal

Output Voltage

Fig.2 The schematic of

output voltage adjusted by

using external DC voltage.

The output voltage can be determined

by below equations:

Vf

VR

Vo

Vout

Rt

Rt

Rt

Rt

Vf



+

=

+



+

+





=

)

(

33

33

68

.

7

)

33

33

(

24

.

1

Unit: KΩ

Vo: Nominal Output Voltage

Rt=6.8K

Ω

Fig.1 The schematic of output voltage

adjusted by using external resistor

and/or variable resistor.