Input:
Outputs:
Current:
Package:
35-75V
5.0V & 3.3V
60W
Quarter-brick
Technical Specification
5.0Vout
3.3Vout
Figure 25: Input reflected ripple current, i , through a 10
inductor at nominal input voltage and rated load current (5 mA/div).
3.3V and 5.0V outputs at 50% rated load current. (see Fig. 23)
µ
H source
Figure 26: Output voltage ripple at nominal input voltage and 50%
rated load current on both outputs (10 mV/div). Load capacitance: 1µF
ceramic cap & 15µF tantalum cap. Bandwidth: 20 MHz. (see Fig. 23)
s
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
6.0
5.5
5.0
4.5
4.0
3.5
35 V
48 V
75 V
35 V
2.0
3.0
2.5
2.0
1.8
48 V
1.6
75 V
1.4
0.0
4.0
8.0
12.0
16.0
20.0
24.0
0.0
4.0
8.0
12.0
16.0
Load Current (A)
Load Current (A)
Figure 27: Output voltage vs. load current showing typical current limit
curves and converter shutdown points for the 3.3V output. 5.0V load is
at 0A.
Figure 28: Output voltage vs. load current showing typical current limit
curves and converter shutdown points for the 5.0V output. 3.3V load is
at 0A.
Figure 29: Load current for 3.3V output (10A/div) as a function of time
Figure 30: Load current for 5.0V output (10A/div) as a function of time
when the converter attempts to turn on into a 10 m
Ω
short circuit.
when the converter attempts to turn on into a 10 m
Ω short circuit.
Bottom trace is an expansion of the on-time portion of the top trace.
Bottom trace is an expansion of the on-time portion of the top trace.
Product # DQ65033QMA06 Phone 1-888-567-9596
Doc.# 005-2DQ653E Rev. H 7/7/04 Page 9
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