(China (Mainland))
Product Summary
The TPS40007DGQR is a controller for low-voltage, non-isolated synchronous buck regulator. The controller drives an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the TPS40007DGQR controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI proprietary Predictive Gate Drive technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated.
Parametrics
TPS40007DGQR absolute maximum ratings: (1)BOOT: VSW + 6.5V; (2)COMP, FB, ILIM, SS/SD: -0.3 to 6.5V; (3)SW: -3 to 10.5 V; (4)SWT (SW transient < 50 ns): -5V; (5)VDD: 6.5V; (6)Operating junction temperature range, TJ: -40 to 150℃; (7)Storage temperature, Tstg: -55 to 150 ℃; (8)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260℃.
Features
TPS40007DGQR features: (1)Operating Input Voltage 2.25 V to 5.5 V; (2)Output Voltage as Low as 0.7 V; (3)1% Internal 0.7 V Reference; (4)Predictive Gate Drive N-Channel MOSFET Drivers for Higher Efficiency; (5)Externally Adjustable Soft-Start and Overcurrent Limit; (6)Fixed-Frequency Voltage-Mode Control; (7)Source/Sink with VOUT Prebias; (8)10-Lead MSOP PowerPad Package for Higher Performance; (9)Thermal Shutdown; (10)Internal Boostrap Diode.
Diagrams
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 TPS40007DGQR |
Texas Instruments |
DC/DC Switching Controllers Low Input Sync Buck src/sink w/prebias |
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TPS40007DGQRG4 |
Texas Instruments |
DC/DC Switching Controllers Low Input Sync Buck src/sink w/prebias |
Data Sheet |
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