BQ24650 Series
Standalone 1-6 cell Buck battery charge controller with solar input and integrated MPPT
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Standalone 1-6 cell Buck battery charge controller with solar input and integrated MPPT
| Part | Function | Utilized IC / Part | Primary Attributes [Min] | Primary Attributes [Max] | Primary Attributes | Supplied Contents | Type | Embedded | Secondary Attributes | Fault Protection | Mounting Type | Voltage - Supply (Max) [Max] | Operating Temperature [Max] | Operating Temperature [Min] | Battery Chemistry | Supplier Device Package [x] | Supplier Device Package [y] | Supplier Device Package | Package / Case | Programmable Features |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24650EVM-639 | Battery Charger | BQ24650 | 5 V | 28 V | Battery Charge Controller for Solar Power | Board(s) | Power Management | On-Board LEDs | ||||||||||||
Texas Instruments BQ24650RVAT | Over Temperature, Over Voltage | Surface Mount | 28 V | 85 °C | -40 °C | Multi-Chemistry | 3.5 | 3.5 | 16-VQFN | 16-VFQFN Exposed Pad | Current |
Key Features
• Maximum Power Point Tracking (MPPT) capability by input Voltage regulationProgrammable MPPT setting5-V to 28-V Input solar panel600-kHz NMOS-NMOS Synchronous buck controllerResistor programmable float voltageAccommodates Li-Ion/Polymer, LiFePO4, lead acid chemistriesAccuracy±0.5% Charge voltage regulation±3% Charge current regulation±0.6% Input voltage regulationHigh IntegrationInternal loop compensationInternal digital soft startSafetyInput overvoltage protectionBattery temperature-sensingBattery absent detectionThermal shutdownCharge status outputs for LED or host processorCharge enable on MPPSET pinAutomatic sleep mode for low power consumption< 15-µA OFF-state battery discharge currentSmall 3.5 × 3.5 mm216-pin QFN packageMaximum Power Point Tracking (MPPT) capability by input Voltage regulationProgrammable MPPT setting5-V to 28-V Input solar panel600-kHz NMOS-NMOS Synchronous buck controllerResistor programmable float voltageAccommodates Li-Ion/Polymer, LiFePO4, lead acid chemistriesAccuracy±0.5% Charge voltage regulation±3% Charge current regulation±0.6% Input voltage regulationHigh IntegrationInternal loop compensationInternal digital soft startSafetyInput overvoltage protectionBattery temperature-sensingBattery absent detectionThermal shutdownCharge status outputs for LED or host processorCharge enable on MPPSET pinAutomatic sleep mode for low power consumption< 15-µA OFF-state battery discharge currentSmall 3.5 × 3.5 mm216-pin QFN package
Description
AI
The BQ24650 device is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output.
The BQ24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.
The BQ24650 charges the battery in three phases: pre-conditioning, constant current, and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. The pre-charge timer is fixed at 30 minutes. The BQ24650 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.
The BQ24650 supports a battery from 2.1 V to 26 V with VFB set to a 2.1-V feedback reference. The charge current is programmed by selecting an appropriate sense resistor. The BQ24650 is available in a 16 -pin, 3.5 mm × 3.5 mm2thin QFN package.
The BQ24650 device is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output.
The BQ24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.
The BQ24650 charges the battery in three phases: pre-conditioning, constant current, and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. The pre-charge timer is fixed at 30 minutes. The BQ24650 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.
The BQ24650 supports a battery from 2.1 V to 26 V with VFB set to a 2.1-V feedback reference. The charge current is programmed by selecting an appropriate sense resistor. The BQ24650 is available in a 16 -pin, 3.5 mm × 3.5 mm2thin QFN package.