BQ76PL455A-Q1

ACTIVE

16-cell battery monitor with passive cell balancing

Data sheet

document-pdfAcrobat bq76PL455A-Q1 16-Cell EV/HEV Integrated Battery Monitor and Protector datasheet (Rev. C) PDF | HTML

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16-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance Stackable, supports bus bar measurement and connection and with improved cell voltage measurements within 200 µs for all cell channels

BQ76PL455A-Q1

ACTIVE

Data sheet

Product details

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Monitors and Balances 6-to-16 Cells per Device
Highly Accurate Monitoring
- High Performance 14-bit Analog-to-Digital Converter (ADC) With Internal Reference
- All Cells Converted in 2.4 ms (Nominal)
- Eight AUX Inputs for Temperature and Other Sensors with Input Voltage of 0 V to 5 V
- Internal Precision Reference
Integrated Protector With Separate Vref for Overvoltage (OV) and Undervoltage (UV) Comparators and Programmable V_CELL Set Points
Engineered for High System Robustness
- Up to 1-Mb/s Stackable Isolated Differential-UART
- Up to 16 ICs in Daisy-Chain With Twisted Pair
- Passes Bulk Current Injection (BCI) Test
- Designed for Robust Hot-Plug Performance
Passive Balancing with External n-FETs and Active Balancing with EMB1428Q/EMB1499Q
Can Help Customers Meet Functional Safety Standard Requirements (For Example, ISO26262)
- Built-in Self-Tests to Validate Defined Internal Functions
- Support for Open Wire Detection
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 2: –40°C to 105°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C3

Monitors and Balances 6-to-16 Cells per Device
Highly Accurate Monitoring
- High Performance 14-bit Analog-to-Digital Converter (ADC) With Internal Reference
- All Cells Converted in 2.4 ms (Nominal)
- Eight AUX Inputs for Temperature and Other Sensors with Input Voltage of 0 V to 5 V
- Internal Precision Reference
Integrated Protector With Separate Vref for Overvoltage (OV) and Undervoltage (UV) Comparators and Programmable V_CELL Set Points
Engineered for High System Robustness
- Up to 1-Mb/s Stackable Isolated Differential-UART
- Up to 16 ICs in Daisy-Chain With Twisted Pair
- Passes Bulk Current Injection (BCI) Test
- Designed for Robust Hot-Plug Performance
Passive Balancing with External n-FETs and Active Balancing with EMB1428Q/EMB1499Q
Can Help Customers Meet Functional Safety Standard Requirements (For Example, ISO26262)
- Built-in Self-Tests to Validate Defined Internal Functions
- Support for Open Wire Detection
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 2: –40°C to 105°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C3

The bq76PL455A-Q1 device is an integrated 16-cell battery monitoring and protection device, designed for high-reliability automotive applications. The integrated high-speed, differential, capacitor-isolated communications interface allows up to sixteen bq76PL455A-Q1 devices to communicate with a host via a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface.

The bq76PL455A-Q1 monitors and detects several different fault conditions, including: overvoltage, undervoltage, overtemperature, and communication faults. Six GPIO ports as well as eight analog AUX ADC inputs are included for additional monitoring and programmable functionality. A secondary thermal shutdown is included for further protection.

The bq76PL455A-Q1 has features that customers may find useful to help them meet functional safety standard requirements. See Safety Manual for bq76PL455A-Q1 (SLUUB67).

The bq76PL455A-Q1 device is an integrated 16-cell battery monitoring and protection device, designed for high-reliability automotive applications. The integrated high-speed, differential, capacitor-isolated communications interface allows up to sixteen bq76PL455A-Q1 devices to communicate with a host via a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface.

The bq76PL455A-Q1 monitors and detects several different fault conditions, including: overvoltage, undervoltage, overtemperature, and communication faults. Six GPIO ports as well as eight analog AUX ADC inputs are included for additional monitoring and programmable functionality. A secondary thermal shutdown is included for further protection.

The bq76PL455A-Q1 has features that customers may find useful to help them meet functional safety standard requirements. See Safety Manual for bq76PL455A-Q1 (SLUUB67).

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	Type	Title		Date
*	Data sheet	bq76PL455A-Q1 16-Cell EV/HEV Integrated Battery Monitor and Protector datasheet (Rev. C)	PDF \| HTML	03 Nov 2016
	More literature	bq76PL455A-Q1 Design Recommendations (Rev. A)		04 Oct 2018
	User guide	EM1402 Evaluation Module	PDF \| HTML	01 Feb 2017
	More literature	bq76PL455A-Q1 Use Case Scenarios		05 Jan 2017
	Technical article	How active and passive cell balancing works		05 Oct 2016
	More literature	Designing EMI/EMC Safe Battery Pack		14 Jun 2016
	Technical article	How batteries may make travel on Mars easier		27 Jan 2016
	Technical article	From millivolts to miles: How the performance of battery-management ICs affects your car’s performance		10 Dec 2015
	More literature	Getting Started with the bq76PL455A-Q1 Example Code	PDF \| HTML	22 Sep 2015
	User guide	bq76PL455EVM and GUI User's Guide (Rev. A)		28 Jul 2015
	More literature	bq76PL455A-Q1 Software Design Reference (Rev. A)		11 May 2015

Design & development

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Evaluation board

EM1402EVM — 16-Channel Active Cell Balance Evaluation Module

16-Cell EV/HEV High Current Active Balance Solution, using the latest automotive battery management monitor and protector, the bq76PL455A-Q1. It provides high-performance battery management solution for large capacity battery packs, by combining the high integration and accuracy of the (...)

User guide: PDF | HTML