PQ60033EGL20 Datasheet, PDF (7/13 Pages) SynQor Worldwide Headquarters – Eighth-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 3.3 V
Current: 20 A
Package: Eighth-brick
See Fig. 15
10 µH
source
impedance
See Fig. 14
See Fig. 16
i_S
V_SOURCE
i_C
47 µF,
<1W ESR
electrolytic
capacitor
DC/DC
Converter
V_OUT
1 µF 10 µF,
ceramic _{100mW ESR}
capacitor _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 cur-
rent and nominal input voltage with 10µ H source impedance and 47µ F
electrolytic capacitor (200 mA/div). See Figure 13.
Figure 15: Input reflected ripple current, is, through a 10 µ H source
inductor at nominal input voltage and rated load current (5 mA/div).
See Figure 13.
Figure 16: Output voltage ripple at nominal input voltage and rated
load current (50 mV/div). Load capacitance: 1µ F ceramic capacitor
and 10µ F tantalum capacitor. Bandwidth: 20 MHz. See Figure 13.
4.0
3.5
3.0
2.5
2.0
35 V
1.5
48 V
75 V
1.0
0
5
10
15
20
25
30
Load Current (A)
Figure 17: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Figure 18: Load current (20A/div) as a function of time when the con-
verter attempts to turn on into a 10 mW short circuit. Top trace
(2.0ms/div) is an expansion of the on-time portion of the bottom trace.
Product # PQ60033EGL20
Phone [phone]
www.synqor.com
Doc.# 005-2EG633D Rev. A 1/7/08
Page 7