PQ60120QZB33 Datasheet, PDF (7/13 Pages) SynQor Worldwide Headquarters – Protection from permanent damage and hazardous conditions

Technical Figures
Input:35-75V
Output:12V
Current:33A
Part No.:PQ60120QZB33
Figure 7: Output Voltage Response to Step-Change in Load Current (50%-
75%-50% of Iout(max): dI/dt = 5 A/μ s; 1 ms/div). Load cap: 470 μF electrolitic
capacitor. Top trace: Vout (500 mV/div). Bottom trace: Iout (35 A/div).
Input
Reflected
Ripple
Current
source
impedance
Input
Terminal
Ripple
Current
Output
Voltage
Ripple
i_S
i_C
DC-DC
Converter
VOUT
VSOURCE
electrolytic
capacitor
ceramic electrolytic
capacitor capacitor
Figure 8: Test Set-up Diagram showing measurement points for Input Terminal
Ripple Current (Fig 9), Input Reflected Ripple Current (Fig 10) and Output
Voltage Ripple (Fig 11).
Figure 9: Input Terminal Ripple Current, ic, at full rated output current and
nominal input voltage with 4.7μH source impedance and 100μF electrolytic
capacitor (50mA/div; 2μs/div). See Figure 8.
Figure 10: Input Reflected Ripple Current, is, through a 4.7μH source inductor,
using a 220μF input capacitor, at nominal input voltage and rated load current
(20mA/div; 2μs/div). See Figure 8.
Figure 11: Output Ripple voltage at nominal input voltage and rated load
current (20mV/div; 4 μs/div). Load capacitance: 1μF ceramic capacitor and
10μF tantalum capacitor. Bandwidth: 20MHz. See Figure 8.
Figure 12: Output Short Load Current (10A/div) as a function of time when the
converter attempts to turn on into a 1mW short circuit. Top trace at 200ms/div.
Bottom trace at 20ms/div
Product # PQ60120QZB33
Phone [phone]
www.synqor.com
Doc.# 005-0005586 Rev. G
02/04/15
Page 7