BQ25790

アクティブ

統合型、NVDC、1 ~ 4 セル、5A スイッチ・モード昇降圧バッテリ・チャージャ

製品の詳細

Number of series cells 1, 2, 3, 4 Charge current (Max) (A) 5 Operating Vin (Max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 3 Battery charge voltage (Max) (V) 18.8 Absolute Vin (safety rating) (Max) ((V)) 30 Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB C/PD compatible, USB D+/D-/BC1.2 integrated, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Operating Vin (Min) (V) 3.6 Rating Catalog
Number of series cells 1, 2, 3, 4 Charge current (Max) (A) 5 Operating Vin (Max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (Min) (V) 3 Battery charge voltage (Max) (V) 18.8 Absolute Vin (safety rating) (Max) ((V)) 30 Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB C/PD compatible, USB D+/D-/BC1.2 integrated, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Operating Vin (Min) (V) 3.6 Rating Catalog
DSBGA (YBG) 56 10 mm² 2.897 x 3.317
  • High efficient synchronous Switch Mode buck-boost charger for 1-4 cell battery
    • 750-kHz and 1.5-MHz Programmable switching frequencies
    • Efficiency optimized for charging 2s battery, 96.5% efficiency with 9-V input and 94.5% efficiency with 15-V input at 3-A ICHG
    • Charging current up to 5 A with 10-mA resolution
  • Support wide range of input sources
    • 3.6-V to 24-V Wide input operating voltage range with 30-V absolute maximum rating
    • Maximum power tracking with VINDPM up to 22 V and IINDPM up to 3.3 A
    • Detect USB BC1.2, SDP, CDP, DCP, HVDCP and non-standard adapters
  • Dual-input power mux controller for source selection
  • High level integration
    • Four switching MOSFETs and BATFET
    • Input current and charging current sensing
  • Narrow-VDC (NVDC) Power Path management
  • Power USB port from battery (USB OTG)
    • 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD PPS
    • OTG Output current regulation up to 3.32 A with 40-mA resolution
  • Flexible autonomous and I2C mode for optimal system performance
  • Integrated 16-bit ADC for voltage, current and temperature monitor
  • Low battery quiescent current
    • Typical 21-µA at battery only operation
    • Typical 600 nA in Charger Shutdown Mode
  • High accuracy
    • ±0.5% Charge voltage regulation for 2s battery
    • ±5% Charge current regulation
    • ±5% Input current regulation
  • Safety
    • Thermal regulation and thermal shutdown
    • Input/battery OVP and OCP
    • Converter MOSFETs OCP
    • Charging safety timer
  • Package
    • 56-Pin 2.9mm × 3.3mm WCSP
  • High efficient synchronous Switch Mode buck-boost charger for 1-4 cell battery
    • 750-kHz and 1.5-MHz Programmable switching frequencies
    • Efficiency optimized for charging 2s battery, 96.5% efficiency with 9-V input and 94.5% efficiency with 15-V input at 3-A ICHG
    • Charging current up to 5 A with 10-mA resolution
  • Support wide range of input sources
    • 3.6-V to 24-V Wide input operating voltage range with 30-V absolute maximum rating
    • Maximum power tracking with VINDPM up to 22 V and IINDPM up to 3.3 A
    • Detect USB BC1.2, SDP, CDP, DCP, HVDCP and non-standard adapters
  • Dual-input power mux controller for source selection
  • High level integration
    • Four switching MOSFETs and BATFET
    • Input current and charging current sensing
  • Narrow-VDC (NVDC) Power Path management
  • Power USB port from battery (USB OTG)
    • 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD PPS
    • OTG Output current regulation up to 3.32 A with 40-mA resolution
  • Flexible autonomous and I2C mode for optimal system performance
  • Integrated 16-bit ADC for voltage, current and temperature monitor
  • Low battery quiescent current
    • Typical 21-µA at battery only operation
    • Typical 600 nA in Charger Shutdown Mode
  • High accuracy
    • ±0.5% Charge voltage regulation for 2s battery
    • ±5% Charge current regulation
    • ±5% Input current regulation
  • Safety
    • Thermal regulation and thermal shutdown
    • Input/battery OVP and OCP
    • Converter MOSFETs OCP
    • Charging safety timer
  • Package
    • 56-Pin 2.9mm × 3.3mm WCSP

The BQ25790 is a fully integrated switch-mode buck-boost charger for 1-4 cell Li-ion battery and Li-polymer battery. The integration includes 4 switching MOSFETs (Q1, Q2, Q3, Q4), input and charging current sensing circuits, the battery FET (QBAT) and all the loop compensation of the buck-boost converter. It provides high power density and design flexibility to charge batteries across the full input voltage range for USB Type-C™ and USB power delivery (USB-PD) applications such as smart phone, tablet and other portable devices.

The charger supports the narrow VDC power path management, in which the system is regulated at a voltage slightly higher than the battery voltage, but not drop below the minimum system voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery gets into supplement mode and prevents the input source from being overloaded and the system from crashing.

The device charges a battery from a wide range of the input sources including legacy USB adapter to high voltage USB PD adapter and traditional barrel adapter. The charger automatically sets converter to be buck, boost or buck-boost configurations based on input voltage and battery voltage without the host control. The dual input source selector manages the power flowing from two different input sources. The inputs selection is controlled by the host through I2C with default source #1 (VAC1) as the primary input and the source #2 (VAC2) as the secondary input.

To support fast charging using adjustable high voltage adapter, the device provides D+/D- handshake. The device is compliant with USB 2.0 and USB 3.0 power delivery specification with input current and voltage regulation. In addition, the Input Current Optimizer (ICO) allows the detection of maximum power point of an unknown input source.

Besides the I2C host controlled charging mode, this charger also supports autonomous charging mode. After power up, the charging is enabled with default register settings. The device can complete a charging cycle without any software engagements. It detects battery voltage and charges the battery in different phases: trickle charging, pre-charging, constant current (CC) charging and constant voltage (CV) charging. At the end of the charging cycle, the charger automatically terminates when the charge current is below a pre-set limit (termination current) in the constant voltage phase. When the full battery falls below the recharge threshold, the charger will automatically start another charging cycle.

In the absence of input sources, this device supports USB On-the-Go (OTG) function, discharging battery to generate an adjustable 2.8V~22V voltage on VBUS with 10mV step size, which is compliant to the USB PD 3.0 specification defined programmable power supply (PPS) feature.

The charger provides various safety features for battery charging and system operations, including battery temperature negative thermistor monitoring, trickle charge, pre-charge and fast charge timers and over-voltage/over-current protections on battery and input. The thermal regulation reduces charge current when the junction temperature exceeds a programmable threshold. The STAT output of the device reports the charging status and any fault conditions. The PG output indicates if a good power source is present. The INT pin immediately notifies host when fault occurs.

The device also provides a 16-bit analog-to-digital converter (ADC) for monitoring charge current and input/battery/system (VAC, VBUS, BAT, SYS, TS) voltages.

It is available in a 56-pin 2.9mm × 3.3mm WCSP package.

The BQ25790 is a fully integrated switch-mode buck-boost charger for 1-4 cell Li-ion battery and Li-polymer battery. The integration includes 4 switching MOSFETs (Q1, Q2, Q3, Q4), input and charging current sensing circuits, the battery FET (QBAT) and all the loop compensation of the buck-boost converter. It provides high power density and design flexibility to charge batteries across the full input voltage range for USB Type-C™ and USB power delivery (USB-PD) applications such as smart phone, tablet and other portable devices.

The charger supports the narrow VDC power path management, in which the system is regulated at a voltage slightly higher than the battery voltage, but not drop below the minimum system voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery gets into supplement mode and prevents the input source from being overloaded and the system from crashing.

The device charges a battery from a wide range of the input sources including legacy USB adapter to high voltage USB PD adapter and traditional barrel adapter. The charger automatically sets converter to be buck, boost or buck-boost configurations based on input voltage and battery voltage without the host control. The dual input source selector manages the power flowing from two different input sources. The inputs selection is controlled by the host through I2C with default source #1 (VAC1) as the primary input and the source #2 (VAC2) as the secondary input.

To support fast charging using adjustable high voltage adapter, the device provides D+/D- handshake. The device is compliant with USB 2.0 and USB 3.0 power delivery specification with input current and voltage regulation. In addition, the Input Current Optimizer (ICO) allows the detection of maximum power point of an unknown input source.

Besides the I2C host controlled charging mode, this charger also supports autonomous charging mode. After power up, the charging is enabled with default register settings. The device can complete a charging cycle without any software engagements. It detects battery voltage and charges the battery in different phases: trickle charging, pre-charging, constant current (CC) charging and constant voltage (CV) charging. At the end of the charging cycle, the charger automatically terminates when the charge current is below a pre-set limit (termination current) in the constant voltage phase. When the full battery falls below the recharge threshold, the charger will automatically start another charging cycle.

In the absence of input sources, this device supports USB On-the-Go (OTG) function, discharging battery to generate an adjustable 2.8V~22V voltage on VBUS with 10mV step size, which is compliant to the USB PD 3.0 specification defined programmable power supply (PPS) feature.

The charger provides various safety features for battery charging and system operations, including battery temperature negative thermistor monitoring, trickle charge, pre-charge and fast charge timers and over-voltage/over-current protections on battery and input. The thermal regulation reduces charge current when the junction temperature exceeds a programmable threshold. The STAT output of the device reports the charging status and any fault conditions. The PG output indicates if a good power source is present. The INT pin immediately notifies host when fault occurs.

The device also provides a 16-bit analog-to-digital converter (ADC) for monitoring charge current and input/battery/system (VAC, VBUS, BAT, SYS, TS) voltages.

It is available in a 56-pin 2.9mm × 3.3mm WCSP package.

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BQ25792 アクティブ デュアル入力セレクタと USB PD 3.0 OTG 出力採用、I2C 制御、5A、1 ~ 4 セル昇降圧チャージャ 本製品は、WQFN パッケージです。

技術資料

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種類 タイトル 英語版のダウンロード 日付
* データシート BQ25790 デュアル入力、I2C 制御、1 ~ 4 セル、5A 昇降圧バッテリ・チャージャ データシート 2020年 6月 3日
アプリケーション・ノート BQ25155 Application Report 2021年 10月 11日
技術記事 How to choose the right battery-charger IC for ultrasound point-of-care products 2021年 3月 24日
Analog design journal Multibattery management in medical ultrasound systems (Rev. A) 2021年 1月 21日
ホワイト・ペーパー 昇降圧バッテリー充電器と USB Type-C™ パワーデリバリーを組み合わせて最大性能を実現 英語版をダウンロード 2020年 9月 2日
ユーザー・ガイド BQ25790EVM (BMS027) User's Guide (Rev. A) 2020年 7月 8日
技術記事 Maximize power density with buck-boost charging and USB Type C™ Power Delivery 2020年 6月 29日
技術記事 Universal and fast charging – a future trend for battery-powered applications 2020年 6月 26日
証明書 BQ25790EVM EU Declaration of Conformity (DoC) 2020年 4月 28日
技術記事 When to use rechargeable batteries in small battery applications 2019年 10月 1日

設計と開発

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評価ボード

BQ25790EVM — BQ25790EVM

BQ25790EVM は、BQ25790 デバイス評価のための包括的な組み立てとテスト実施済みの評価基板 (EVM) です。BQ25790 は、統合型のスイッチ・モード昇降圧バッテリ充電管理デバイスであり、1 ~ 4 直列セルのリチウムイオン / リチウムポリマ・バッテリを意図しています。このチャージャは、Narrow VDC (NVDC、狭い入力電源電圧範囲) アーキテクチャを採用しており、バッテリが完全に放電した状態であっても、最小出力電圧値でシステムのレギュレーションを実現できます。BQ25790 は、USB 入力電源検出機能、デュアル入力電源選択機能、USB OTG (...)
在庫あり
制限: 5
アプリケーション・ソフトウェアとフレームワーク

BQSTUDIO — バッテリ・マネージメント・スタジオ(bqStudio)ソフトウェアスイート

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
アプリケーション・ソフトウェアとフレームワーク

TI-CHARGER-GUI — GUI software for use with USB2ANY and battery charging evaluation modules

TI-CHARGER-GUI は、Web ベースまたはスタンドアロンのグラフィカル・ユーザー・インターフェイス (GUI) を実現し、各種バッテリ・チャージャ製品の評価、設計、構成、テストの各プロセスを支援します。このソフトウェアを使用すると、各レジスタへの包括的なアクセスや、コマンドの送信とシーケンス制御用の使いやすいインターフェイスが得られます。
パッケージ ピン数 ダウンロード
DSBGA (YBG) 56 オプションの表示

購入と品質

含まれる情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL rating/ リフローピーク温度
  • MTBF/FIT の推定値
  • 原材料組成
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果

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