PQ60033QPA45 Datasheet, PDF (7/14 Pages) SynQor Worldwide Headquarters – Quarter-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 3.3 V
Current: 45 A
Package: Quarter-brick
Figure 13: Turn-on transient at full rated load (resistive load) (5
ms/div) Input voltage pre-applied. Ch 1: Vout (1V/div). Ch 2: ON/OFF
input (5V/div)
Figure 14: Turn-on transient at zero load current (5 ms/div).
Ch 1: Vout (1V/div)
Ch 2: ON/OFF input (5V/div)
Figure 15: Output voltage response to step-change in load current (50%-75%-
50% of Iout(max); dI/dt = 0.1A/µ s). Load cap: 10µ F, 100 mW ESR tantalum capac-
itor and 1µ F ceramic capacitor. Ch 1: Vout (100mV/div), Ch 2: Iout (20A/div).
Figure 16: Output voltage response to step-change in load current (50%-75%-
50% of Iout(max): dI/dt = 1A/µ s). Load cap: 470µ F, 30 mW ESR tantalum
capacitor and 1µ F ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (20A/div).
See Fig. 19
10 µH
source
impedance
See Fig. 18
See Fig. 20
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 17: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 18), Input Reflected Ripple Current
(Figure 19) and Output Voltage Ripple (Figure 20).
Figure 18: 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 17.
Product # PQ60033QPA45
Phone [phone]
www.synqor.com
Doc.# 005-2QP633F Rev. C
9/21/07
Page 7