PQ60025HPA80 Datasheet, PDF (7/13 Pages) SynQor Worldwide Headquarters – Half-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 2.5 V
Current: 80 A
Package: Half-brick
See Fig. 15
10 µH
source
impedance
See Fig. 14
See Fig. 16
i_S
V_SOURCE
i_C
47 µF,
<1Ω ESR
electrolytic
capacitor
DC/DC
Converter
V_OUT
1 µF 15 µF,
ceramic
capacitor
450mΩ 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 cur-
rent 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 (5 mA/div).
(See Figure 13)
Figure 16: Output voltage ripple at nominal input voltage and rated
load current (20 mV/div). Load capacitance: 1µF ceramic capacitor
and 15µF tantalum capacitor. Bandwidth: 20 MHz. (See Figure 13)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
35 V
48 V
75 V
10 20 30 40 50 60 70 80 90 100 110
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 1 mΩ short circuit. Top trace
(2ms/div) is an expansion of the on-time portion of the bottom trace.
Product # PQ60025HPA80
Phone [phone]
www.synqor.com
Doc.# 005-2HP625K Rev. C 02/07/06
Page 7