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TPS40070PWP Datasheet(PDF) 10 Page - Texas Instruments

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Part # TPS40070PWP
Description  HIGH-EFFICIANCY MIDRANGE INPUT SYNCHRONOUS BUCK CONTROLLER WITH VOLTAGE FEED-FORWARD
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS40070PWP Datasheet(HTML) 10 Page - Texas Instruments

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TYPICAL MAXIMUM DUTY CYCLE
vs
INPUT VOLTAGE
VIN - Input Voltage - V
UVLO(on) = 8 V
UVLO(on) = 15 V
UVLO(on) = 4.5 V
UVLO(on) = 12 V
VDG−03172
RAMP
COMP
SW
VIN
VIN
SW
COMP
RAMP
VPEAK
VVALLEY
T2
tON1 > tON2 and d1 > d2
tON2
tON1
d +
tON
T
T1
TPS40070
TPS40071
SLUS582D–DECEMBER 2003–REVISED NOVEMBER 2004
APPLICATION INFORMATION (continued)
Figure 7.
Figure 8. Voltage Feed-Forward and PWM Duty Cycle Waveforms
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