Technical Specification
See Fig. 15
10 µH
See Fig. 14
See Fig. 16
Input:
Output:
Current:
Package:
35-75 V
5.0 V
30 A
Quarter-brick
source
impedance
i
S
i
C
47 µF,
@1W
ESR
DC/DC
Converter
1 µF
V
OUT
V
SOURCE
electrolytic
capacitor
ceramic
capacitor
10 µF,
100mW ESR
tantalum
capacitor
Figure 13:
Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 14), Input Reflected Ripple Current (Figure
15) and Output Voltage Ripple (Figure 16).
Figure 14:
Input Terminal Ripple Current, ic, at full rated output current
and nominal input voltage with 10µH source impedance and 47µF
electrolytic capacitor (200 mA/div). See Figure 13.
Figure 15:
Input reflected ripple current, is, through a 10 µH source
inductor at nominal input voltage and rated load current (10 mA/div). See
Figure 13.
Figure 16:
Output voltage ripple at nominal input voltage and rated load
current (50 mV/div). Load capacitance: 1µF ceramic capacitor and 10µF
tantalum capacitor. Bandwidth: 500 MHz. See Figure 13.
Figure 17:
Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Product # PQ60050QTA30
Phone 1-888-567-9596
Figure 18:
Load current (20A/div) as a function of time when the converter
attempts to turn on into a 1 mW short circuit. Top trace (2ms/div) is an
expansion of the on-time portion of the bottom trace.
Doc.# 005-2QT650C Rev. E
05/20/09
Page 7
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