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電池保護器

BQ7718

現行

具有內部延遲計時器的 2-5S 過電壓保護器

立即訂購
產品規格表

BQ7718

現行
產品規格表 立即訂購

產品詳細資料

Function Protection Number of series cells (min) 2, 3, 4, 5 Number of series cells (max) 3, 4, 5 Features Overvoltage, Single pin output drive, Stackable Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 25 TI functional safety category Functional Safety-Capable Overvoltage protection 3.85, 3.95, 4.2, 4.225, 4.275, 4.3, 4.35, 4.45 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.85 Battery overvoltage protection (max) (V) 4.65
Function Protection Number of series cells (min) 2, 3, 4, 5 Number of series cells (max) 3, 4, 5 Features Overvoltage, Single pin output drive, Stackable Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 25 TI functional safety category Functional Safety-Capable Overvoltage protection 3.85, 3.95, 4.2, 4.225, 4.275, 4.3, 4.35, 4.45 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.85 Battery overvoltage protection (max) (V) 4.65
WSON (DPJ) 8 12 mm² 4 x 3
  • 2-, 3-, 4-, and 5-series cell overvoltage protection
  • Internal delay timer
  • Fixed OVP threshold
  • High-accuracy overvoltage protection: ± 10 mV
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT)
  • Low leakage current per cell input < 100 nA
  • Functional Safety-Capable
  • Package footprint options:
    • Small 8-pin QFN (3.00 mm × 4.00 mm)
    • Leaded 8-pin MSOP (3.00 mm × 5.00 mm, including leads)
  • 2-, 3-, 4-, and 5-series cell overvoltage protection
  • Internal delay timer
  • Fixed OVP threshold
  • High-accuracy overvoltage protection: ± 10 mV
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT)
  • Low leakage current per cell input < 100 nA
  • Functional Safety-Capable
  • Package footprint options:
    • Small 8-pin QFN (3.00 mm × 4.00 mm)
    • Leaded 8-pin MSOP (3.00 mm × 5.00 mm, including leads)

The BQ7718xy family of products provides an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. For quicker production-line testing, the BQ7718xy device provides a Customer Test Mode (CTM) with greatly reduced delay time.

In the BQ7718xy device, an internal delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into its active state (either high or low depending on the configuration).

The BQ7718xy family of products provides an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. For quicker production-line testing, the BQ7718xy device provides a Customer Test Mode (CTM) with greatly reduced delay time.

In the BQ7718xy device, an internal delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into its active state (either high or low depending on the configuration).
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類型 標題 日期
* Data sheet BQ7718 Overvoltage Protection for 2-Series to 5-Series Cell Li-Ion Batteries with Internal Delay Timer datasheet (Rev. L) PDF | HTML 2021年 6月 30日
Functional safety information BQ7718 Functional Safety FIT Rate, Failure Mode Distribution, and Pin FMA (Rev. A) 2020年 4月 6日
White paper 以工業電池組為運輸替代方案提供電源 2020年 3月 17日
E-book E-book: An engineer’s guide to industrial robot designs 2020年 2月 12日
Technical article Protector, monitor or gauge – selecting the correct battery electronics for your L PDF | HTML 2019年 6月 13日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

BQ40Z80EVM-020 — BQ40Z80 2s-7s 電池電量計評估模組

bq40z80 EVM 包括一個 bq40z80、兩個 bq771807 二次保護器，以及 Microsoft Windows 電腦軟體的連結，其採用 2、3、4、5、6、或 7 芯串聯鋰離子或鋰聚合物電池組，可用於監控和預測容量、執行電池芯平衡、監控重要參數，進而保護電池芯免於過度充電、過度放電、短路。該電路包括連接 USB 的板載 EV2400 介面，如此即可讓軟體讀取 bqz40z80 資料暫存器，為不同的電池組配置的晶片組進行編程，記錄循環數據以做進一步評估，並針對不同充電和放電條件下的解決方案整體功能性進行評估。
使用指南: PDF
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開發板

BQ76942EVM — 3 系列至 10 系列鋰離子、鋰聚合物和 LiFePO4 電池監測器和保護器 EVM

The BQ76942EVM evaluation module (EVM) is a complete evaluation system for the BQ76942, a 3-cell to 10-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76942 circuit module which is used for simple evaluation of the BQ76942 monitor function. The circuit module includes one (...)

使用指南: PDF
TI.com 無法提供
開發板

BQ76952EVM — 3-s 至 16-s 鋰離子、鋰聚合物和 LiFePO4 電池監測器和保護器評估模組

The BQ76952EVM evaluation module (EVM) is a complete evaluation system for the BQ76952, a 3-cell to 16-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76952 circuit module which is used for simple evaluation of the BQ76952 monitor function. The circuit module includes one (...)

使用指南: PDF
TI.com 無法提供
參考設計

TIDA-010030 — 精確電量計和 50-μA 待機電流、13-S、48-V 鋰離子電池組參考設計

This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00108 — 堆疊式過電壓電池保護器參考設計

The secondary level protectors for 48V-60V  battery systems are being mandated in industrial applications. The TIDA-00108 reference design introduces the user to implement a robust stacked architecture, without compromising high accuracy voltage detection system for a 10s-15s series (...)
Design guide: PDF
電路圖: PDF
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