Overview
The Texas Instruments BQ24650RVAT is a highly integrated switch-mode battery charge controller designed for solar power applications with Maximum Power Point Tracking (MPPT). This IC is part of the BQ24650 series and is optimized for charging a variety of battery chemistries, including Lead-Acid, LiFePO4, Lithium-Ion, and Lithium-Polymer. The BQ24650RVAT features a constant-frequency synchronous PWM controller, ensuring high accuracy in current and voltage regulation. It also includes charge pre-conditioning, charge termination, and charge status monitoring, making it a comprehensive solution for battery charging needs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Battery Type | Lead-Acid, LiFePO4, Lithium-Ion, Lithium-Polymer |
| Mounting Type | Surface Mount |
| Package Type | VQFN |
| IC Type | Battery Charge Controller IC |
| Pin Count | 16 |
| Typical Operating Supply Voltage | 5 to 28 V |
| Dimensions | 3.6 x 3.6 x 0.95 mm |
| Maximum Operating Temperature | +85 °C |
| Minimum Operating Temperature | -40 °C |
| Maximum Output Voltage | 2.1 V |
| Maximum Charge Current | 10 A |
| Control Topology | Switch-Mode Buck |
| Number of Series Cells | 1, 2, 3, 4, 5, 6 |
Key Features
- Constant-Frequency Synchronous PWM Controller: Ensures high accuracy in current and voltage regulation.
- Maximum Power Point Tracking (MPPT): Optimizes solar panel output by adjusting charge current based on input voltage.
- Programmable MPPT Setting: Allows for customization of MPPT levels.
- Charge Phases: Includes pre-conditioning, constant current, and constant voltage phases for comprehensive battery charging.
- Charge Termination and Restart: Automatically terminates charge when current reaches 1/10 of the fast charge rate and restarts if battery voltage falls below a threshold.
- Low Quiescent Current Sleep Mode: Enters a low power mode when input voltage falls below battery voltage.
- Resistor Programmable Float Voltage: Allows for adjustable float voltage settings.
- Standard Battery Temperature Monitoring: Monitors battery temperature for safe charging operations.
Applications
- Solar Power Systems: Ideal for charging batteries in solar-powered systems, ensuring maximum power output from solar panels.
- Renewable Energy Systems: Suitable for use in renewable energy applications where efficient battery charging is crucial.
- Portable Electronics: Can be used in portable electronic devices that require efficient and reliable battery charging.
- Automotive Systems: Applicable in automotive systems that use various battery chemistries.
Q & A
- What is the BQ24650RVAT used for?
The BQ24650RVAT is a switch-mode battery charge controller designed for solar power applications with Maximum Power Point Tracking (MPPT).
- What battery chemistries does the BQ24650RVAT support?
The BQ24650RVAT supports Lead-Acid, LiFePO4, Lithium-Ion, and Lithium-Polymer battery chemistries.
- What is the typical operating supply voltage range of the BQ24650RVAT?
The typical operating supply voltage range is 5 to 28 V.
- How many series cells can the BQ24650RVAT charge?
The BQ24650RVAT can charge 1 to 6 series cells.
- What is the maximum charge current of the BQ24650RVAT?
The maximum charge current is 10 A.
- Does the BQ24650RVAT have programmable MPPT settings?
Yes, the BQ24650RVAT has programmable MPPT settings.
- How does the BQ24650RVAT optimize solar panel output?
The BQ24650RVAT optimizes solar panel output by adjusting the charge current based on the input voltage through its MPPT capability.
- What are the dimensions of the BQ24650RVAT package?
The dimensions are 3.6 x 3.6 x 0.95 mm.
- What is the operating temperature range of the BQ24650RVAT?
The operating temperature range is -40 °C to +85 °C.
- Does the BQ24650RVAT have a low quiescent current sleep mode?
Yes, the BQ24650RVAT enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.
