Texas Instruments BOOSTXL-TPS652170, Руководство пользователя

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Introduction
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2 SLVUBH6 – November 2018
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Copyright © 2018, Texas Instruments Incorporated
BOOSTXL-TPS652170 EVM User's Guide
26 Layout—Top Composite
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27 Layout—Bottom Composite
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28 Top Layer
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29 Inner Layer 1 (GND Plane)
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30 Inner Layer 2 (Signal)
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31 Bottom Layer (Top View)
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32 BOOSTXL-TPS652170 Schematic
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List of Tables
1 Electrical Connections of Headers
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2 BOOSTXL-TPS652170 Test Point List
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3 BOOSTXL-TPS652170 Jumper List
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4 Bill of Materials
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Trademarks
All trademarks are the property of their respective owners.
1 Introduction
The BOOSTXL-TPS652170 allows designers to program samples of the TPS652170 and verify the values
in the EEPROM match the power-up and power-down sequence requirements of the targeted processor
that will be powered by the PMIC in the final application. The BOOSTXL-TPS652170 BoosterPack EVM is
simple to test, requiring only an MSP430F5529 LaunchPad and USB A-to-micro B cable. With no load or a
light load on the BoosterPack EVM, the power provided by the LaunchPad is sufficient to power the
TPS652170 device, re-program the EEPROM, and perform all of the measurements described in this
document. The 5 V provided by the VBUS wire of the USB cable is the only power input to the
LaunchPad.
The TPS652170 device consists of three step-down converters (DCDC1, DCDC2, DCDC3), one WLED
boost converter (DCDC4), two general-purpose LDO regulators (LDO1, LDO2), and two load switches that
can be purposed as LDO regulators (LS1/LDO3, LS2/LDO4). The output voltage of all the DC/DC
converters and the LDO regulators is programmable. Configuring the load switches as additional LDO
regulators is programmable. The sequence order of all DC/DC converters, the LDOs, and the load
switches can also be programmed and assigned to integer values relative to each other. The sequence
timing and supervisor thresholds are global parameters that can be programmed. The integrated battery
charger of the TPS652170 can also be programmed but the BAT, BAT_SENSE, and TS pins are not
routed out to test points on the BOOSTXL-TPS65218.
Modifying some or all of these register map values and re-programming the EEPROM of the TPS652170
device with the IPG-UI software creates new reset values for the PMIC, which allows the PMIC to power-
on and power-off with the required timing for a variety of processors or FPGAs.
Figure 1 shows the top-side of the BOOSTXL-TPS652170 PCB, on which a socket is placed to install
TPS652170 samples and re-program the samples. The samples can then be removed from the socket
and soldered down on a TPS65217xEVM or prototype PCB to evaluate the power delivery capabilities of
the TPS652170 newly programmed for a specific processor or FPGA. If the output voltages or sequencing
are not ideal for the processor or FPGA on the first attempt, the process can be repeated until the ideal
programming of the TPS652170 device is determined.