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TPS630241YFFT Datasheet(PDF) 9 Page - Texas Instruments

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No. de Pieza. TPS630241YFFT
Descripción  High Current, High Efficiency Single Inductor Buck-Boost Converter
Descarga  29 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS630241YFFT Datasheet(HTML) 9 Page - Texas Instruments

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PGND
PGND
VIN
VOUT
+
-
VREF
PGND
PGND
FB
VOUT
L2
L1
VIN
VINA
PFM/PWM
EN
GND
Current
Sensor
Gate
Control
Modulator
Oscillator
Device
Control
Temperature
Control
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PGND
EN
TPS63024
TPS630241, TPS630242
www.ti.com
SLVSCK8A – NOVEMBER 2014 – REVISED DECEMBER 2014
9 Detailed Description
9.1 Overview
The TPS63024x use 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.
9.2 Functional Block Diagram
Functional Block Diagram (Adjustable Output Voltage)
Copyright © 2014, Texas Instruments Incorporated
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Product Folder Links: TPS630241 TPS630242


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