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TPS56300PWPR Datasheet(PDF) 2 Page - Texas Instruments

Part # TPS56300PWPR
Description  DUAL-OUTPUT LOW-INPUT-VOLTAGE DSP POWER SUPPLY CONTROLLER WITH SEQUENCING
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS56300PWPR Datasheet(HTML) 2 Page - Texas Instruments

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TPS56300
DUALOUTPUT LOW INPUT VOLTAGE
DSP POWER SUPPLY CONTROLLER WITH SEQUENCING
SLVS261B − DECEMBER 1999 − SEPTEMBER 2000
2
www.ti.com
description (continued)
The LDO controller drives an external N-channel power MOSFET and functions as an LDO regulator, suitable for
powering the I/O or as a power distribution switch. To promote better system reliability during power up, voltage
sequencing and protection are controlled such that the core and I/O power up together with the same slow-start
voltage. At power down, the LDO and ripple regulator are discharged towards ground for added protection. The
TPS56300 also includes inhibit, slowstart, and under-voltage lockout features to aide in controlling power
sequencing. A tri-level voltage identification network (VID) sets both regulated voltages to any of 9 preset voltage
pairs from 1.3 V to 3.3 V. Other voltages are possible by implementing an external voltage divider. Strong MOSFET
drivers, with a typical peak current rating of 2-A sink and source are included on chip, enabling high system currents
beyond 30 A. The high-side driver features a floating bootstrap driver with the internal bootstrap synchronous rectifier.
Many protection features are incorporated within the device to ensure better system integrity. An open-drain output
POWER GOOD status circuit monitors both output voltages, and is pulled low if either output fall below the threshold.
An over current shutdown circuit protects the high-side power MOSFET against short-to-ground faults at load or the
phase node, while over voltage protection turns off the output drivers and LDO controller if either output exceeds its
threshold. Under voltage protection turns off the high-side and low-side MOSFET drivers and the LDO controller if
either output is 25% below VREF. Lossless current-sensing is done by detecting the drain-source voltage drop across
the high-side power MOSFET while it is conducting. The TPS56300 is fully compliant with TI DSP power requirements
such as the ‘C6000 family.
AVAILABLE OPTIONS
PACKAGES
TJ
TSSOP†
(PWP)
EVALUATION MODULE
−40
°C to 125°C
TPS56300PWP
TPS56300EVM−139 (SLVP139)
† The PWP package is also available taped and reel. To order, add an R to the end of
the part number (e.g., TPS56300PWPR).


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