Overview
The TPS65217CEVM is an evaluation module for the TPS65217 power management integrated circuit (PMIC) designed by Texas Instruments. This PMIC is specifically tailored to power the AM335x ARM® Cortex®-A8 processor in various portable and 5-V line-powered applications. The TPS65217 device integrates multiple power management functions, including a linear battery charger for single-cell Li-ion and Li-polymer batteries, a dual-input power path, three high-efficiency step-down converters, four low-dropout (LDO) regulators, and a high-efficiency boost converter to power up to 20 LEDs. The module is designed to operate across a wide temperature range of –40°C to +105°C, making it suitable for industrial applications as well.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | VQFN (48 pins) | 6-mm × 6-mm, 0.4-mm pitch |
| Operating Temperature Range | –40°C to +105°C | |
| Power Path Output Current | 2 A | |
| Linear Charger Maximum Charge Current | 700 mA | |
| USB and AC Input Tolerance | 20 V | |
| Step-Down Converter Switching Frequency | 2.25 MHz | |
| Step-Down Converter Output Voltage Accuracy | ±2% in PWM mode | |
| LDO Regulators Quiescent Current | Typical 15 µA | |
| WLED Driver LED Strings | Two strings of up to 10 LEDs each at 25 mA |
Key Features
- Charger and Power Path: 2-A output current on power path, linear charger with 700-mA maximum charge current, 20-V tolerant USB and AC inputs, thermal regulation, safety timers, and temperature sense input.
- Step-Down Converters: Three step-down converters with integrated switching FETs, 2.25-MHz fixed frequency operation, power-save mode at light-load current, 100% duty cycle for lowest dropout, and typical 15-µA quiescent current per converter.
- LDO Regulators: Two adjustable LDOs, with LDO2 configurable to track DCDC3, and two independent load switches that can be configured as LDOs.
- WLED Driver: Internally generated PWM for dimming control, 38-V open-LED protection, supports two strings of up to 10 LEDs at 25 mA each, and internal low-side current sinks.
- Protection Features: Undervoltage lockout, battery fault comparator, always-on push-button monitor, hardware reset pin, and password-protected I2C registers.
- Interface: I2C interface with address 0x24 and password-protected I2C registers.
Applications
- Sitara™ AM335x Processor Power: Specifically designed to power the AM335x ARM® Cortex®-A8 processor.
- Portable Navigation Systems: Suitable for navigation devices due to its compact and efficient power management.
- Tablet Computing: Used in tablet computers for managing power efficiently.
- 5-V Industrial Equipment: Applicable in various industrial equipment requiring 5-V power supply.
Q & A
- What is the TPS65217CEVM used for?
The TPS65217CEVM is an evaluation module for the TPS65217 power management integrated circuit (PMIC), designed to evaluate and demonstrate the performance of the TPS65217 in various applications.
- What type of battery does the TPS65217 support?
The TPS65217 supports single-cell Li-ion and Li-polymer batteries.
- What is the maximum charge current of the linear charger?
The maximum charge current of the linear charger is 700 mA.
- How many step-down converters does the TPS65217 have?
The TPS65217 has three high-efficiency step-down converters.
- What is the switching frequency of the step-down converters?
The switching frequency of the step-down converters is 2.25 MHz.
- What is the quiescent current of the LDO regulators?
The typical quiescent current of the LDO regulators is 15 µA.
- How many LED strings can the WLED driver support?
The WLED driver can support two strings of up to 10 LEDs each at 25 mA.
- What protection features does the TPS65217 have?
The TPS65217 includes undervoltage lockout, battery fault comparator, always-on push-button monitor, hardware reset pin, and password-protected I2C registers.
- What interface does the TPS65217 use for communication?
The TPS65217 uses an I2C interface with address 0x24 and password-protected I2C registers.
- What is the operating temperature range of the TPS65217?
The operating temperature range of the TPS65217 is –40°C to +105°C.
