TECHNICAL DATASHEET

WALL INDUSTRIES, INC.

Rev. B

MPQ24S48-50

Technical Specifications

M

We reserve the right to change specifications based on technological advances.

SPECIFICATION

Related condition

Min

Nom

Max

Unit

Switching Frequency

-

200

-

kHz

Operating Voltage Range

10

24

36

Vdc

UVLO Turn On at

9.8

10.0

10.3

Vdc

UVLO Turn Off at

9.4

9.7

9.9

Vdc

UVLO Hysterisis

-

0.3

-

Vdc

Maximum Input Current (Graph 3)

Low Line

-

5.8

-

A

No Load Input Current (Graph 5)

No Load

-

0.081

-

A

Input Current under “Remote Off” (Graph 6)

Active High Unit

-

3.1

-

mA

Reflected Ripple Current (Photos 1 & 2)

Measured with a 120 uF Alum. Elect. Input Capacitor

-

192

-

mA

Input Surge Voltage

100 mS

-

-

50

Vdc

EFFICIENCY (Graph 1)

-

87

-

%

Voltage Set Point

±Sense shorted to ±Vout

4.970

-0.60

5.000

5.030

+0.60

Vdc

%

Voltage Adjustment (Table 2)

Max Output limited to 90W

4.50

-10%

5.00

5.50

+10%

Vdc

Load Regulation (Graph 7)

±Sense shorted to ±Vout

-

0.02

0.1

%

Line Regulation (Graph 8)

±Sense shorted to ±Vout

-

0.02

0.1

%

Temperature Drift (Graph 9)

-

0.013

0.025

Remote Sense Compensation

Max Output limited to 50W

(as measured at the converter output pins)

-

-

5.50

10%

Vdc

%

Ripple (Photos 7, 9 & 11)

With 1 uF c

eramic & 10 uF Tantalum

-

82

100

Spikes (Photos 7, 9 & 11)

With 1 uF c

eramic & 10 uF Tantalum

-

82

150

Current

0

-

10.0

A

Current Limit

Power Limited-Dependent upon SENSE

compensation and TRIM adjustment

12

14

16

A

Over Voltage Limit

5.8

54.0

58

Vdc

DYNAMIC RESPONSE

Load step /

∆ V (Photos 8, 10 & 12)

25% to 100% Io, di/dt=0.025A/uS

-

264

-

mV

Recovery Time (Photos 8, 10 & 12)

Recovery to within 1% Nominal Vout

-

1

-

ms

Turn On Delay (Photo 3)

From Vin(min) to Vout (mom)

-

10

-

ms

Turn On Overshoot (Photos 3 & 5)

Full Load Resistive

-

0.0

-

%

Hold Up Time (Photo 4)

0

-

-

mS

REMOTE ON/OFF

Active High or Active Low (Add an ‘R’ to the end of the PN ie: MPQ24S5-50R)

Remote ON – Active High

Min High to Enable

1.5

-

-

Vdc

Remote OFF – Active High

Max Low to Disable

-

-

0.3

Vdc

Remote ON/OFF pin Floating – Active High

Over Operating Voltage Range

1.6

-

5.2

Vdc

-

-

0.15

mA

Remote ON – Active Low

Max Low to Enable

-

-

0.8

Vdc

Remote OFF – Active Low

Min High to Disable

2.1

-

-

Vdc

Remote ON/OFF pin Floating – Active Low

Over Operating Voltage Range

2.3

-

6.2

-

-

0.6

mA

-

0

-

mA

Turn On Delay – (Photo 5)

Enable (max Low) to Vout (min)

-

3

-

ms

Turn Off Delay – (Photo 6)

Enable (0V) to Vout (min)

-

-

100

uS

ISOLATION

Input-Output

1 minute

1000

-

-

Vdc

Input/Output-Chassis

1 minute

1000

-

-

Vdc

Isolation Resistance

20

-

-

GΩ

Isolation Capacitance

-

0.01

-

uF

THERMAL

Ambient (Graph 2)

Max. Ambient limited by Derating Curves (Graph 2)

-40

25

Graph 2

Over Temperature Protection

Case Temperature

-

110

-

Storage Temperature

-55

-

125

MTBF

Calculated Using Bellcore TR-332 Method 1 case 3

1,250,300

hours

MECHANICAL

See Figure 1

Weight

-

61

-

g

(888) 597-WALL

www.wallindustries.com

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