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TPS40007DGQR Datasheet(PDF) 8 Page - Texas Instruments |
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TPS40007DGQR Datasheet(HTML) 8 Page - Texas Instruments |
8 / 28 page TPS40007 TPS40009 SLUS589B− NOVEMBER 2003 − REVISED FEBRUARY 2005 8 www.ti.com APPLICATION INFORMATION UDG−03166 GND Fixed Delay Adaptive Delay Predictive Delay Channel Conduction Body Diode Conduction Figure 2. Switch Node Waveforms for Synchronous Buck Converter SHORT CIRCUIT PROTECTION Overcurrent conditions in the TPS4000x are sensed by detecting the voltage across the main MOSFET while it is on. Basic Description If the voltage exceeds a pre-set threshold, the current pulse is terminated, and a counter inside the device is incremented. If this counter fills up, a fault condition is declared and the device disables switching for a period of time and then attempts to restart the converter with a full soft-start cycle. |
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