The TPS65921 device is a highly integrated power-management circuit (IC) that supports the power and peripheral requirements of the OMAP application processors. The device contains power management, a universal serial bus (USB) high-speed (HS) transceiver, an analog-to-digital converter (ADC), a real-time clock (RTC), a keypad interface, and an embedded power control (EPC). 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 EPC to manage the power-sequencing requirements of OMAP, and an RTC module. The USB module provides an HS 2.0 transceiver suitable for direct connection to the OMAP universal transceiver macrocell interface (UTMI) + low pin interface (ULPI) with an integrated charge pump (CP).

The device also provides auxiliary modules: ADC, keypad interface, and general-purpose inputs/outputs (GPIOs) muxed with the JTAG functions. The keypad interface implements a built-in scanning algorithm to decode hardware-based key presses and to reduce software use, with multiple additional GPIOs that can be used as interrupts when they are configured as inputs.

• Three Step-Down Converters:
  • Up to 1.2 A of Output Current for VDD1
    • TPS65921B Supports VDD1 up to 1.2 A
    • TPS65921B1 Supports VDD1 up to 1.4 A (Necessary for 1-GHz Operation)
  • SmartReflex Dynamic Voltage Management
  • 3.2-MHz Fixed Frequency Operation
  • VIN Range from 2.7 to 4.5 V
  • Typical 30 μA Quiescent per Converter
• Four General-Purpose Configurable LDOs:
  • Dynamic Voltage Scaling
  • 220-mA Maximum Current for One LDO
  • VIN Range from 2.7 to 4.5 V
  • 2 LDOs With Low Noise and High PSRR
• RTC With Alarm Wake-Up Mechanism
• Clock Management
  • 32-kHz Crystal Oscillator
  • Clock Slicer for 26, 19.2, and 38.4 MHz
  • HF Clock Output Buffer
• USB:
  • USB HS 2.0 Transceiver
  • USB 1.3 OTG-Compliant
  • 12-Bit ULPI 1.1 Interface
  • USB Power Supply (5-V CP for VBUS)
• Control
  • High-Speed I2C Interface
  • All Resource Configurable by I2C
• Keypad Interface up to 8 × 8
• 10-Bit A/D Converter
• Hot-Die, Thermal Shutdown Protection
• μ*BGA 120 Balls ZQZ

• Regulated outputs (#)
• 7
• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 5.5
• Iout (Max) (A)
• 1.2
• Rating
• Catalog
• LDO
• 4
• Features
• Comm Control, Power Sequencing
• Processor name
• OMAP
• Processor supplier
• Texas Instruments
• Switching frequency (Typ) (kHz)
• 3200
• Configurability
• Factory programmable

TPS65921的完整型号有：TPS65921B1ZBHR、TPS65921BZBHR，以下是这些产品的关键参数及官网采购报价：

TPS65921B1ZBHR，工作温度：-40 to 85，封装：NFBGA (ZBH)-120，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SNAGCU，TI官网TPS65921B1ZBHR的批量USD价格：3.098（1000+）

TPS65921BZBHR，工作温度：-40 to 85，封装：NFBGA (ZBH)-120，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SNAGCU，TI官网TPS65921BZBHR的批量USD价格：3.098（1000+）

TWL4030SW-LINUX — 用于 TWL4030 的 Linux 驱动程序

The Linux driver supports the TWL4030 series of Integrated Power Management ICs. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

• twl4030
• (...)