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電池充電器 IC

BQ24650

現行

具太陽能輸入和整合式 MPPT 的獨立式 1-6 芯降壓電池充電控制器

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產品規格表

BQ24650

現行
產品規格表 立即訂購

產品詳細資料

Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 10 Vin (max) (V) 28 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Absolute max Vin (max) (V) 33 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Input OVP, Solar input/MPPT, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 10 Vin (max) (V) 28 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Absolute max Vin (max) (V) 33 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Input OVP, Solar input/MPPT, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 5 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RVA) 16 12.25 mm² 3.5 x 3.5
  • Maximum Power Point Tracking (MPPT) capability by input Voltage regulation
  • Programmable MPPT setting
  • 5-V to 28-V Input solar panel
  • 600-kHz NMOS-NMOS Synchronous buck controller
  • Resistor programmable float voltage
  • Accommodates Li-Ion/Polymer, LiFePO4, lead acid chemistries
  • Accuracy
    • ±0.5% Charge voltage regulation
    • ±3% Charge current regulation
    • ±0.6% Input voltage regulation
  • High Integration
    • Internal loop compensation
    • Internal digital soft start
  • Safety
    • Input overvoltage protection
    • Battery temperature-sensing
    • Battery absent detection
    • Thermal shutdown
  • Charge status outputs for LED or host processor
  • Charge enable on MPPSET pin
  • Automatic sleep mode for low power consumption
    • < 15-µA OFF-state battery discharge current
  • Small 3.5 × 3.5 mm2 16-pin QFN package
  • Maximum Power Point Tracking (MPPT) capability by input Voltage regulation
  • Programmable MPPT setting
  • 5-V to 28-V Input solar panel
  • 600-kHz NMOS-NMOS Synchronous buck controller
  • Resistor programmable float voltage
  • Accommodates Li-Ion/Polymer, LiFePO4, lead acid chemistries
  • Accuracy
    • ±0.5% Charge voltage regulation
    • ±3% Charge current regulation
    • ±0.6% Input voltage regulation
  • High Integration
    • Internal loop compensation
    • Internal digital soft start
  • Safety
    • Input overvoltage protection
    • Battery temperature-sensing
    • Battery absent detection
    • Thermal shutdown
  • Charge status outputs for LED or host processor
  • Charge enable on MPPSET pin
  • Automatic sleep mode for low power consumption
    • < 15-µA OFF-state battery discharge current
  • Small 3.5 × 3.5 mm2 16-pin 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 mm2 thin 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 mm2 thin QFN package.

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* Data sheet BQ24650 Stand-Alone Synchronous Buck Battery Charge Controller for Solar Power With Maximum Power Point Tracking datasheet (Rev. B) PDF | HTML 2019年 10月 2日
Application note How to Charge a Lead-Acid Battery With a Li-Ion Charger 2020年 4月 29日
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 2019年 12月 31日
Application note Preventing bq24650 Leakage Current When Using Shaded Solar Panels 2016年 9月 19日
Analog Design Journal 2Q 2012 Issue Analog Applications Journal 2012年 4月 26日
Analog Design Journal 4Q 2011 Issue Analog Applications Journal 2011年 11月 9日
Analog Design Journal Solar charging solution provides narrow-voltage DC/DC system bus for multicell 2011年 11月 9日
Application note Using the bq24650 to Charge a Sealed, Lead-Acid Battery (Rev. A) 2011年 10月 4日
Application note How to Review a Multicell Switching Charger Schematic 2011年 9月 21日
Analog Design Journal 3Q 2011 Issue Analog Applications Journal 2011年 9月 16日
Application note Maximum Power Point Tracking With the bq24650 Charger. (Rev. A) 2011年 8月 15日
User guide bq24650EVM Synchronous, Switch-Mode, Battery Charge Controller for Solar Power (Rev. A) 2010年 10月 16日
Application note Using the bq24650 to Charge a LiFePO4 battery 2010年 8月 24日

設計與開發

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開發板

BQ24650EVM-639 — 適用於太陽能的 BQ24650 評估模組同步切換模式電池充電控制器

The BQ24650EVM Evaluation Module assists users in evaluating the bq24650 synchronous battery charger. The bq24650 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 (...)

使用指南: PDF
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計算工具

SLUC175 — bq246xx Calculation Tool V1.5

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產品
電池充電器 IC
BQ24600 — 獨立式 1-6 芯降壓電池充電控制器 BQ24610 — 獨立式 1-6 芯降壓電池充電控制器，具 5V-28V 輸入 BQ24616 — 符合 JEITA 標準的獨立式 1-6 芯降壓電池充電控制器 BQ24617 — 獨立式 1-5 芯降壓電池充電控制器，具 5V-24V 輸入 BQ24618 — 獨立式 1-6 芯降壓電池充電控制器，具 5V-28V 輸入且適用 USB BQ24620 — 適用鋰磷酸鹽電池的獨立式 1-7 芯降壓電池充電控制器 BQ24630 — 具系統電源且適用 LiFePO4 電池的獨立式 1-7 芯降壓電池充電器控制器 BQ24640 — 適用超級電容器的獨立式 1-8 芯降壓電池充電器 BQ24650 — 具太陽能輸入和整合式 MPPT 的獨立式 1-6 芯降壓電池充電控制器
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計算工具

SLUC229 — MPP Tracking with bq24650 and NTC Thermistor

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產品
電池充電器 IC
BQ24650 — 具太陽能輸入和整合式 MPPT 的獨立式 1-6 芯降壓電池充電控制器
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參考設計

TIDA-00049 — 高效率同步切換模式充電器控制器太陽能鋰電池充電器參考設計

This reference design is featured in solar lithium battery applications. This design, which contains an integrated switch-mode battery charge controller, provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a (...)
Test report: PDF
電路圖: PDF
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