ALD12 datasheet(12/20 Pages) ASTEC

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Technical Reference Notes

ALD12/18/20/25 Series

(Single Output 16

th Brick)

MODEL: ALD12/18/20/25 SERIES

SHEET 12 OF 20

AUGUST 17, 2005 – REVISION C

Performance Curves

2.5V Version (continued)

1.8V Version

Efficiency vs. Output Current, T

A=25°C

55%

60%

65%

70%

75%

80%

85%

90%

95%

Output Current (Amps)

Vin = 36Vdc

Vin = 48Vdc

Vin = 75Vdc

Figure 24. 1.8V Efficiency vs. output current at various

input line conditions, TA = 25°C.

Power Dissipation vs. Output Current, T

A=25°C

Output Current (Amps)

Vin = 36 Vdc

Vin = 48 Vdc

Vin = 75 Vdc

Figure 25. 1.8V Power Dissipation vs. load current at

various input line conditions, TA = 25°C.

Figure 23. 2.5V Transient Response 50% to 75% step at

VIN = 48Vdc, TA = 25°C, di/dt = 0.1A/µs, CO = 0.

Figure 22. 2.5V Output current vs. ambient temperature

curves at VIN = 48Vdc.

ALD20G48 Current vs. Tem perature

Am bient Tem perature (°C)

0 LFM

100 LFM

200 LFM

300 LFM

400 LFM

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