Texas Instruments TWL6032, Руководство пользователя

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Copyright © 2012, Texas Instruments Incorporated
User's Guide
SWCU105 – October 2012
TWL6032 Evaluation Module (EVM) User’s Guide
1 Introduction
1.1 Description
1.1.1 Device Description
The TWL6032 device is an integrated power-management integrated circuit (PMIC) for applications
powered by a rechargeable battery. The device provides five configurable step-down converters with up to
5-A current capability for memory, processor core, I/O, auxiliary, preregulation for low drop-out voltage
regulators (LDOs), and so forth. The TWL6032 device also contains nine LDOs for external use that can
be supplied from a battery or a preregulated supply. The power-up and power-down controller is
configurable and can support any power-up and power-down sequence (programmed in OTP memory).
The real-time clock (RTC) provides three 32-kHz clock outputs, seconds, minutes, hours, day, month, and
year information, as well as alarm wakeup and timer. The TWL6032 device supports 32-kHz clock
generation based on a crystal oscillator.
The TWL6032 device integrates a switched-mode system supply regulator from a universal serial bus
(USB) connector. The TWL6032 includes power paths from the USB and battery with supplemental mode
for immediate startup, even with an empty battery. The battery switch uses an external low- Ωic PMOS
transistor allowing minimal serial resistance during fast charging and when operating from a battery. The
TWL6032 device can also be used without the external PMOS transistor; the battery is then always tied to
the system supply and the switched-mode regulator is used for battery charging.
Project collateral and source code discussed in this application report can be downloaded from the
following URL: http://www.ti.com/lit/zip/SWCU105 .
1.1.2 EVM Kit Description
The TWL6032 evaluation module (EVM) is a stand-alone module that demonstrates the functions of the
integrated PMIC. The EVM uses a USB cable and an MSP430™ device (mounted on the EVM) to control
the standard inter-integrated circuit (I
2
C™) interfaces in the TWL6032 device. It includes Windows
®
-
compatible software to interface with the device. The software is a simple graphical user interface (GUI)
that simplifies registers access for the IC.
1.1.3 EPROM Power-Up Sequence Description
This user's guide is common for all TWL6032x parts. The only difference in these parts is the EPROM
sequence for power up. Each part has a unique EPROM sequence to satisfy the attached application
processor. For details of the EPROM sequence, see the corresponding user's guide in the Application
Notes section on the TWL6032x product page.
SmartReflex is a trademark of Texas Instruments.
Windows is a registered trademark of Microsoft Corporation.
I
2
C is a trademark of Philips Semiconductor Corp.
MSP430 is a trademark of Texas Instruements.
SD is a registered trademark of Toshiba Corporation.
All other trademarks are the property of their respective owners.
SWCU105 – October 2012 TWL6032 Evaluation Module (EVM) User’s Guide
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