PQ60120HZX50 Datasheet, PDF (7/13 Pages) SynQor Worldwide Headquarters – Half-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 12 V
Current: 50 A (600W)
Package: Half-brick
Figure 7: Turn-on transient at full load (resistive load) (10 ms/div).
Ch 1: Vout (5 V/div)
Ch 2: ON/OFF input (5 V/div)
Figure 8: Turn-on transient at zero load (10 ms/div).
Ch 1: Vout (5 V/div)
Ch 2: ON/OFF input (5 V/div)
Figure 9: Output voltage response to step-change in load current (50%-75%-50% of
Iout(max); dI/dt = 0.1 A/µs; 1 ms/div). Load cap: 1 uF ceramic and 470  µF, 15 mW ESR
electrolitic capacitors. Top trace: Vout (500 mV/div). Bottom trace: Iout (10 A/div).
Figure 10: Output voltage response to step-change in load current (50%-75%-50% of
Iout(max): dI/dt = 5 A/µs; 1 ms/div). Load cap: 470 µF, 15 mW ESR electrolitic capacitor.
Top trace: Vout (500 mV/div). Bottom trace: Iout (10 A/div).
Figure 13
4.7 µH
source
impedance
Figure 12
Figure 14
i_S
i_C
DC/DC
Converter
V_OUT
V_SOURCE
220 µF,
0.2W ESR
electrolytic
capacitor
1 µF
15 µF,
ceramic 100mW ESR
capacitor _tantalum
capacitor
Figure 11: Test set-up diagram showing measurement points for Input Terminal
Ripple Current (Figure 12), Input Reflected Ripple Current (Figure 13) and
Output Voltage Ripple (Figure 14).
Figure 12: Input Terminal Ripple Current, ic, at full rated output current and
nominal input voltage with 4.7 µH source impedance and 220 µF electrolytic
capacitor (1 A/div; 2 µs/div). See Figure 11.
Product # PQ60120HZx50
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www.synqor.com
Doc.# 005-2HZ612J Rev. D
06/12/09
Page 7