QRW025A0A641 参数 Datasheet PDF下载

Data Sheet

June 15,

2009

Characteristic Curves

QRW010/025/035/040 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.0 to 12 Vdc Output; 10 A to 40 A

The following figures provide typical characteristics curves for the QRW040A0Y (VO = 1.8 V) module at room temperature (TA

= 25 °C)

3.0

INPUT CURRENT, I

I

(A)

2.5

2.0

1.5

1.0

0.5

0

0

20

40

60

80

INPUT VOLTAGE, V

I

(V)

I

O

= 50%

I

O

= 100%

I

O

= 10%

OUTPUT CURRENT,

I

O

(A) (10 A/div)

OUTPUT VOLTAGE,

V

O

(V) (100 mV/div)

TIME, t (0.1 ms/div)

Figure 19.

Input Voltage and Current Characteristics.

Tested with a 220µF aluminium and a 1.0µF ceramic capacitor

across the load.

Figure 22. Transient Response to Step Decrease in

Load from 50% to 25% of Full Load

(VI = 48 Vdc).

EFFICIENCY,

η

(%)

OUTPUT CURRENT, Io (A)

OUTPUT CURRENT,

I

O

(A) (10 A/div)

OUTPUT VOLTAGE,

V

O

(V) (100 mV/div)

TIME, t (0.1 ms/div)

Figure 20.

Converter Efficiency vs. Output Current.

Figure 23. Transient Response to Step Increase in

Load from 50% to 75% of Full Load

(VI = 48 Vdc).

OUTPUT VOLTAGE,

V

O

(V) (0.5 V/div)

REMOTE ON/OFF,

V

ON/OFF

(5 V/div)

V

I

= 36 V

OUTPUT VOLTAGE, V

O

(V)

(50 mV/div)

V

I

= 48 V

V

I

= 75 V

TIME, t (2 ms/div)

TIME, t (1 µs/div)

Tested with a 10µF aluminium and a 1.0µF tantalum capacitor

across the load.

Figure 21. Output Ripple Voltage (IO = IO, max).

Lineage Power

Figure 24. Start-up from Remote On/Off (IO = IO, max).

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