TPS65911集成電路（IC）的電源管理-專用規(guī)格書PDF中文資料

1.1 Features 1

? Embedded Power Controller (EPC) With EEPROM

Programmability

? Two Efficient Step-Down DC-DC Converters for

Processor Cores (VDD1, VDD2)

? One Efficient Step-Down DC-DC Converter for I/O

Power (VIO)

? One Controller for External FETs (VDDCtrl)

? Dynamic Voltage Scaling (DVS) for Processor

Cores

? Eight LDO Voltage Regulators and One RTC LDO

(Supply for Internal RTC)

? One High-Speed I2C Interface for General-Purpose

Control Commands (CTL-I2C)

? Two Independent Enable Signals for Controlling

Power Resources (EN1, EN2)

– Alternatively, the EN1 and EN2 Pins can be

Used as a High-Speed I2C Interface Dedicated

for Voltage Scaling for VDD1 and VDD2

? Thermal Shutdown Protection and Hot-Die

Detection

? A Real-Time Clock (RTC) Resource With:

– Oscillator for 32.768-kHz Crystal or 32-kHz

Built-in RC Oscillator

– Date, Time, and Calendar

– Alarm Capability

? Nine Configurable GPIOs With Multiplexed Feature

Support:

– Four can be Used as Enable for External

Resources, Included in Power-Up Sequence

and Controlled by State Machine

– As GPI, GPIOs Support Logic-Level Detection

and can Generate Maskable Interrupt for

Wakeup

– Two of the GPIOs Have 10-mA Current Sink

Capability for Driving LEDs

– DC-DC Converters Switching Synchronization

Through an External 3-MHz Clock

? Two Reset Inputs:

– Cold Reset (HDRST)

– Power Initialization Reset (PWRDN) for Thermal

Reset Input

? 32-kHz Clock and Reset (NRESPWRON) for

System and an Additional Output for Reset Signal

? Watchdog

? Two ON and OFF LED Pulse Generators and One

PWM Generator

? Two Comparators for System Control, Connected

to VCCS Pin

? A JTAG and Boundary Scan (Not Accessible in

Functional Mode [Test Purpose])

1.2 Applications

Portable and Hand-Held Systems

1.3 Description

The TPS65911 device is an integrated power management IC (PMIC) available in a 98-pin 0.65-mm pitch

BGA package. The TPS65911 device is dedicated to applications powered by one Li-Ion or Li-Ion polymer

battery cell, 3-series Ni-MH cells, or a 5-V input, and applications that require multiple power rails. The

device provides three step-down converters, one controller for external FETs to support high current rail,

eight LDOs, and the device is designed to be a flexible PMIC for supporting different processors and

applications.

Two of the step-down converters provide power for dual processor cores and support dynamic voltage

scaling by a dedicated I2C interface for optimum power savings. The third converter provides power for the

I/Os and memory in the system.

The device includes eight general-purpose LDO regulators that provide a wide range of voltage and

current capabilities. Five of the LDO regulators support 1 to 3.3 V with a 100-mV step and three (LDO1,

LDO2, LDO4) support 1.0 to 3.3 V with a 50-mV step. All LDO regulators are fully controllable by the I2C

interface.

In addition to the power resources, the device contains an EPC to manage the power sequencing

requirements of systems and an RTC. Power sequencing is programmable by EEPROM.