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AUG 25, 2006 revised to MAR 19, 2007
Page 60 of 70
www.power-one.com
SQ24 Series DC-DC Converter Data Sheet
18-36 VDC Input; Standard Outputs from 1-12 VDC
SQ24T/S15012 (1.2 Volts Out)
Fig. 1.2V.9:
Turn-on transient at full rated load current
(resistive) with no output capacitor at Vin = 24V, triggered via
ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom
trace: output voltage (0.5 V/div.). Time scale: 1 ms/div.
Fig. 1.2V.11: Output voltage response to load current step-
change (3.75 A – 7.5 A – 3.75 A) at Vin = 24V. Top trace:
output voltage (100 mV/div.). Bottom trace: load current (5
A/div.). Current slew rate: 0.1 A/
μs. Co = 1 μF ceramic. Time
scale: 0.2 ms/div.
Fig. 1.2V.10: Turn-on transient at full rated load current
(resistive) plus 10,000
μF at Vin = 24V, triggered via ON/OFF
pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output
voltage (0.5 V/div.). Time scale: 1 ms/div.
Fig. 1.2V.12: Output voltage response to load current step-
change (3.75 A – 7.5 A – 3.75 A) at Vin = 24V. Top trace:
output voltage (100 mV/div.). Bottom trace: load current (5
A/div.). Current slew rate: 5 A/
μs. Co = 450 μF tantalum + 1 μF
ceramic. Time scale: 0.2 ms/div.