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TPS63010YFFT Datasheet(PDF) 11 Page - Texas Instruments |
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TPS63010YFFT Datasheet(HTML) 11 Page - Texas Instruments |
11 / 27 page _ + _ + Current Sensor Gate Control PGND PGND VIN VOUT Modulator + − Oscillator Device Control Temperature Control VREF PGND PGND FB VOUT L2 L1 VIN VINA PS EN GND SYNC VSEL VINA1 11 TPS63010, TPS63011, TPS63012 www.ti.com SLVS653C – JUNE 2008 – REVISED FEBRUARY 2016 Product Folder Links: TPS63010 TPS63011 TPS63012 Submit Documentation Feedback Copyright © 2008–2016, Texas Instruments Incorporated 8 Detailed Description 8.1 Overview The TPS6301x uses 4 internal N-channel MOSFETs to maintain synchronous power conversion at all possible operating conditions. This enables the device to keep high efficiency over the complete input voltage and output power range. To regulate the output voltage at all possible input voltage conditions, the device automatically switches from buck operation to boost operation and back as required by the configuration. It always uses one active switch, one rectifying switch, one switch is held on, and one switch held off. Therefore, it operates as a buck converter when the input voltage is higher than the output voltage, and as a boost converter when the input voltage is lower than the output voltage. There is no mode of operation in which all 4 switches are switching at the same time. Keeping one switch on and one switch off eliminates their switching losses. The RMS current through the switches and the inductor is kept at a minimum, to minimize switching and conduction losses. Controlling the switches this way allows the converter to always keep higher efficiency. The device provides a seamless transition from buck-to-boost or from boost-to-buck operation The device provides a seamless transition from buck-to-boost or from boost-to-buck operation. 8.2 Functional Block Diagrams Figure 22. Functional Block Diagram (TPS63010) |
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