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TPS61291DRVT Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce TPS61291DRVT
Description  TPS61291 Low Iq Boost Converter with Bypass Operation
Download  25 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS61291DRVT Fiches technique(HTML) 7 Page - Texas Instruments

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P
VOUT
EN/BYP
SW
Rectifying
Switch
Overvoltage
Protection
Bypass
Switch
Startup Circuit
VIN
Control Logic
Thermal Shutdown
Undervoltage
Lockout
Driver
GND
Main
Switch
Vref
integrated FB divider
network with disconnect
BYP/EN
VSEL
Bypass Switch
Control
VOUT
VIN
Current
Sense
Voltage Error
Amplifier
N
N
Reference Vref
VIN
TPS61291
www.ti.com
SLVSBX9A – SEPTEMBER 2014 – REVISED SEPTEMBER 2014
7 Detailed Description
7.1 Overview
The TPS61291 provides two operating modes: high efficiency boost mode to generate an output voltage higher
than the input voltage and bypass mode, which connects the output of the device directly to the input.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Bypass / Boost Mode Operation EN/BYP
The EN/BYP pin selects the operating mode of the device. With the EN/BYP pin pulled low, the device operates
in bypass mode. With a high level on the EN/BYP pin, the device operates as a boost converter. The EN/BYP
pin is usually controlled by an I/O pin of a MCU, powered from the output of the TPS61291 and should not be left
floating. See Figure 8. See also sections Boost Mode Operation and Bypass Mode Operation for more detailed
descriptions.
Copyright © 2014, Texas Instruments Incorporated
Submit Documentation Feedback
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Product Folder Links: TPS61291


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