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QMS DC-DC Series Data Sheet
Wide-Range Input, 70 to 82W Quarter-Brick Converters
Vo Turn-on Characteristics, f (V IN )
Figure 6. QMS25DE, Turn-On @ Power-up (typ)
Vo Turn-on Characteristics, f (ON/OFF)
Figure 9. QMS25DE, Turn-On via On/Off Ctrl (typ)
Conditions: Vin max., Cext = 0 μF
Channel 1 - Input voltage = 36 VDC
Channel 2 – Vout, T RISE = 1 ms
Output current: 25 ADC
Scale : 10V/div., 1ms/div.
Scale : 1V/div.
Conditions: Vin = 36 VDC, Cext=0 μF
Channel 1 - On/Off signal
Channel 2 - Output voltage
Time base = 20 ms/div.
Output current: 25 ADC
Scale : 2V/div.
Amplitude = 1V/div.
Delay time = 90ms (typ.)
Figure 7. QMS14DG, Turn-On @ Power-up (typ)
Figure 10. QMS14DG, Turn-On via On/Off Ctrl (typ)
Conditions: Vin max., Cext = 0 μF
Channel 1 - Input voltage = 36 VDC
Channel 2 - Vout, T RISE = 3 ms
Output current: 14 ADC
Scale : 20V/div., 1ms/div.
Scale : 1V/div.
Conditions: Vin = 36 VDC, Cext = 0 μF
Channel 1 - On/Off signal
Channel 2 - Output voltage
Time base = 50 ms/div.
Output current: 14 ADC
Scale : 2V/div.
Amplitude = 1V/div.
Delay time = 200 ms (typ.)
Figure 8. QMS07DH, Turn-On @ Power-up (typ)
Figure 11. QMS07DH, Turn-On via On/Off Ctrl (typ)
Conditions: Vin max., Cext = 0 μF
Channel 1 - Input voltage = 36 VDC
Channel 2 - Vout, T RISE = 4 ms
Output current: 6.75 ADC
Scale : 10V/div., 2ms/div.
Scale : 2V/div.
Conditions: Vin = 36 VDC, Cext = 0 μF
Channel 1 - On/Off signal
Channel 2 - Output voltage
Time base = 50 ms/div.
Output current: 6.75 ADC
Scale : 2V/div.
Amplitude = 2V/div.
Delay time = 200 ms (typ.)
MCD10143 Rev.1.1, 30--Aug-10
Page 9 of 20
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