Overview
The BQ24650EVM-639 is an evaluation module designed by Texas Instruments to evaluate the bq24650 synchronous switch-mode battery charge controller. This module is specifically tailored for solar power applications, providing a comprehensive platform to assess the performance and features of the bq24650 IC. The bq24650 is a highly integrated switch-mode battery charge controller that includes input voltage regulation, maximum power point tracking (MPPT), and support for various battery chemistries such as Li-Ion/Polymer, LiFePO4, and lead acid.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | BQ24650EVM-639 |
| Manufacturer | Texas Instruments |
| Input Operating Range | 5V to 28V |
| Battery Voltage Range | 2.1V to 26V |
| Switching Frequency | 600 kHz |
| Package Type | 16-pin, 3.5 mm × 3.5 mm2 QFN |
| Charge Voltage Regulation Accuracy | ±0.5% |
| Charge Current Regulation Accuracy | ±3% |
| Input Voltage Regulation Accuracy | ±0.6% |
| Off-state Battery Discharge Current | < 15 μA |
Key Features
- Synchronous switch-mode battery charge controller for solar power
- Maximum Power Point Tracking (MPPT) capability through input voltage regulation
- Resistor-programmable up to 26-V battery voltage
- LED indication for charge status
- Test points for key signals available for testing purposes; easy probe hook-up
- Jumpers available; easy-to-change settings
- High integration – internal loop compensation and internal digital soft start
- Safety features – input overvoltage protection, battery temperature-sensing, battery absent detection, and thermal shutdown
- Automatic sleep mode for low power consumption
Applications
- Solar-powered applications
- Remote monitoring stations
- Portable handheld instruments
- 12-V to 24-V Automotive systems
- Current-limited power source
Q & A
- What is the BQ24650EVM-639 evaluation module used for?
The BQ24650EVM-639 is used to evaluate the bq24650 synchronous switch-mode battery charge controller, particularly for solar power applications.
- What is the input operating range of the BQ24650EVM-639?
The input operating range is from 5V to 28V.
- What types of batteries does the BQ24650 support?
The BQ24650 supports Li-Ion/Polymer, LiFePO4, and lead acid batteries.
- What is the switching frequency of the BQ24650?
The switching frequency is 600 kHz.
- How accurate is the charge voltage regulation of the BQ24650?
The charge voltage regulation accuracy is ±0.5%.
- Does the BQ24650 have safety features?
Yes, it includes input overvoltage protection, battery temperature-sensing, battery absent detection, and thermal shutdown.
- What is the purpose of the MPPT feature in the BQ24650?
The Maximum Power Point Tracking (MPPT) feature ensures that the solar panel operates at maximum power output by regulating the input voltage.
- How does the BQ24650 manage power consumption when not in use?
The BQ24650 enters an automatic sleep mode for low power consumption, with an off-state battery discharge current of less than 15 μA.
- What kind of package does the BQ24650 come in?
The BQ24650 is available in a 16-pin, 3.5 mm × 3.5 mm2 QFN package.
- Are there any test points available on the BQ24650EVM-639 for testing purposes?
Yes, the module includes test points for key signals, making it easy to hook up probes for testing.
