TPS65950

集成电源管理 IC PMIC，具有 3 个 DC/DC、11 个 LDO 以及音频编解码器和 USB HS 收发器

The device is a highly integrated power-management and audio coder/decoder codec integrated circuit IC that supports the power and peripheral requirements of the OMAP™ application processors. The device contains power management, an audio codec, a universal serial bus USB highspeed HS transceiver, an AC/USB charger, light-emitting diode LED drivers, an analog-to-digital converter ADC, a real-time clock RTC, and embedded power control.

The power portion of the device contains three buck converters, two controllable by a dedicated SmartReflex class-3 interface, multiple low-dropout LDO regulators, an embedded power controller EPC to manage the power-sequencing requirements of OMAP, and an RTC and backup module. The RTC can be powered by a backup battery when the main supply is not present, and the device contains a coin-cell charger to recharge the backup battery as needed.

The USB module provides a HS 2.0 on-the-go OTG transceiver suitable for direct connection to the OMAP universal transceiver macrocell interface UTMI + low pin interface ULPI with an integrated charge pump CP and full support for the carkit Consumer Electronics Association CEA-936A specification.

The Li-ion battery charger supports charging from AC chargers, USB host devices, USB chargers, or carkits. The device automatically detects the type of charger and provides hardware-controlled linear charging with AC chargers, USB chargers, and carkits, in addition to software-controlled charging for all charger types.

The audio codec in the device includes five digital-to-analog converters DACs and two ADCs to provide multiple voice channels and stereo downlink channels that can support all standard audio sample rates through several inter-IC sound I2S/time division multiplexing TDM format interfaces. The audio output stages on the device include stereo headset amplifiers, two integrated class-D amplifiers providing stereo differential outputs, predrivers for line outputs, and an earpiece amplifier. The input audio stages include three differential microphone inputs, stereo line inputs, and interface for digital microphones. Automatic and programmable gain control is available with all necessary digital filtering, side-tone functions, and popnoise reduction.

The device also provides auxiliary modules, including LED drivers, an ADC, a keypad interface, and general-purpose inputs/outputs GPIOs. The LED driver can power two LED circuits to illuminate a panel or provide user indicators. The drivers also provide pulse width modulation PWM circuits to control the illumination levels of the LEDs. The ADC monitors signals entering the device, such as supply and charging voltages, and has multiple external ADC inputs for system use. The keypad interface implements a built-in scanning algorithm to decode hardware-based key presses and reduce software use. Multiple GPIOs can be used as interrupts when they are configured as inputs.

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Power:

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Three Efficient Step-down Converters

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VDD1: TPS65950A2 with 1.2 A and

TPS65950A3 with 1.4 A for 1-GHz Speed

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VDD2: 600 mA

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VIO: 700 mA

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10 External Linear LDOs for Clocks and

Peripherals

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SmartReflex™ Dynamic Voltage Management

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Audio:

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Voice Codec

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15-Bit Linear Codec 8 and 16 kHz

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Differential Input Main and Submicrophones

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Differential Headset Microphone Input

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Auxiliary/FM Input Mono or Stereo

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Differential 32-Ω Speaker and 16-Ω Headset

Drivers External Predrivers for Class D

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8-Ω Stereo Class-D Drivers

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Pulse Code Modulation PCM and TDM

Interfaces

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_Bluetooth_® Interface

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Automatic Level Control ALC

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Digital and Analog Mixing

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16-Bit Linear Audio Stereo DAC 96, 48, 44.1,

and 32 kHz, and Derivatives

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16-Bit Linear Audio Stereo ADC 48, 44.1, and

32 kHz, and Derivatives

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Digital Microphone Inputs

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Carkit

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Charger:

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Li-ion, Li-on Polymer, and Cobalt-Nickel-

Manganese Charger

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Supports Charging with AC-Regulated Charger

Maximum 7 V, USB Host Devices, Mobile

Computing Promotion Consortium MCPC

Devices, USB Chargers, and Carkit Chargers

Maximum 7 V

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Backup Battery Charger

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USB:

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USB 2.0 OTG-Compliant HS Transceivers

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12-Bit ULPI

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USB Power Supply 5-V CP for VBUS

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CEA-2011: OTG Transceiver Interface Specification

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CEA-936A: Mini-USB Analog Carkit Interface

Specification

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MCPC ME-Universal Asynchronous

Receiver/Transmitter UART GL-006

Specification

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Additional Features:

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LED Driver Circuit for Two External LEDs

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10-Bit MADC with 3 to 8 External Inputs

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RTC and Retention Modules

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HS Inter-Integrated Circuit I2C Serial Control

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Thermal Shutdown and Hot-Die Detection

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Keypad Interface up to 8 × 8

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External Vibrator Vibrator Control

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19 GPIO Devices

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0.4-mm Pitch, 209 Pin, 7-mm × 7-mm Package