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TPS56121DQPR Datasheet(PDF) 10 Page - Texas Instruments

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No. de pieza TPS56121DQPR
Descripción Electrónicos  4.5-V to 14-V Input High-Current Synchronous Buck SWIFT Converter
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS56121DQPR Datasheet(HTML) 10 Page - Texas Instruments

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background image
BOOT
SW
ILIM
EN/SS
COMP
FB
GND
VDD
BP
PGOOD
PAD
VIN
+
+
FB
0.6 VREF + 12.5%
0.6 VREF –12.5%
+
Fault
Controller
SS
Soft Start
BP
Anti-Cross
Conduction
and
Pre-Bias
Circuit
PWM
Logic
BP
Clock
6-V
Regulator
References
0.6 VREF
SD
BP
Oscillator
+
Calibration
Circuit
+
UDG-11050
0.6 VREF
SS
10 mA
750 kW
Fault Controller
Thermal
Shutdown
OC
Threshold
Setting
10 mA
OC
SS
SD
PWM
Clock
OC
TPS56121
10
TPS56121
SLUSAH4D – MARCH 2011 – REVISED FEBRUARY 2016
www.ti.com
Product Folder Links: TPS56121
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
The TPS56121 is a 15-A high performance synchronous buck converter with two integrated N-channel NexFET
power MOSFETs. The device implements a voltage-mode control with voltage feed-forward compensation that
responds instantly to input voltage change. Pre-bias capability eliminates concerns about damaging sensitive
loads.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Voltage Reference
The 600-mV bandgap cell is internally connected to the non-inverting input of the error amplifier. The reference
voltage is trimmed with the error amplifier in a unity gain configuration to remove amplifier offset from the final
regulation voltage. The 1% tolerance on the reference voltage allows the user to design a very accurate power
supply.


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Descripción similar - TPS56121DQPR

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