Texas Instruments | BQ75614-Q1 14S or 16S Standalone Precision Automotive Battery Monitor, Balancer and Integrated Current Sense with up to SafeTITM-26262 ASIL-D ASIL-D Compliance | Datasheet | Texas Instruments BQ75614-Q1 14S or 16S Standalone Precision Automotive Battery Monitor, Balancer and Integrated Current Sense with up to SafeTITM-26262 ASIL-D ASIL-D Compliance Datasheet

Texas Instruments BQ75614-Q1 14S or 16S Standalone Precision Automotive Battery Monitor, Balancer and Integrated Current Sense with up to SafeTITM-26262 ASIL-D ASIL-D Compliance Datasheet
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BQ75614-Q1
SLUSDT6 – SEPTEMBER 2019
BQ75614-Q1 14S or 16S Standalone Precision Automotive Battery Monitor, Balancer and
Integrated Current Sense with up to SafeTITM-26262 ASIL-D ASIL-D Compliance
1 Features
2 Applications
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3 Description
The BQ75614-Q1 device provides high-accuracy cell
voltage measurements up to 16S battery modules in
less than 200 µs. The integrated front-end filters
enable the system to implement with simple, low
voltage raring, differential RC filters on the cell input
channels. The integrated, post-ADC, low-pass filters
enable filtered, DC-like, voltage measurements.
Integrated current measurement with option to
synchronize with cell voltage measurements for better
state of charge (SOC) calculation. The device
supports autonomous internal cell balancing with
temperature monitoring to auto-pause and resume
balancing to avoid an overtemperature condition. The
device includes option to support fuse and relay
open/close diagnostics. The device also includes
eight GPIOs/auxiliary inputs that can be used for
external thermistor measurements.
Device Information(1)
PART NUMBER
PACKAGE
BQ75614-Q1
HTQFP (64-pin)
BODY SIZE (NOM)
10.00 mm × 10.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified System Diagram
FUSE
Relay
IN
Fuse/relay sense
12 V
PMIC
OUT
BAT
GPIOx
BQ75614
ISO
load
•
•
•
Automotive 48 V Li-Ion battery systems
E-bikes, E-Scooters
VCC2
...
•
Qualified for automotive applications
AEC-Q100 Qualified with the following results:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature range
– Device HBM ESD classification level 2
– Device CDM ESD classification level C4B
SafeTI™-26262 ASIL-D compliance
– Cell voltage measurements
– Current measurement
– Temperature measurements
– Communication
SafeTI™-26262 ASIL-B compliant
– OV, UV Protector (hardware comparators)
– OT, UT Protector (hardware comparators)
Pin-package and software compatible device
family:
– Stackable monitor 16S (BQ79616), 14S
(BQ79614), and 12S (BQ79612)
– Standalone monitor 48 V system (BQ75614)
Direct support on fuse and relay open and close
diagnostics
Built-in redundancy path for voltage and
temperature and current diagnostics
Highly accurate cell voltage measurements within
128 µs for all cell channels
Integrated post-ADC configurable digital low-pass
filters
Supports bus bar connection and measurement
Built-in host-controlled hardware reset to emulate
POR-like device reset
Supports internal cell balancing
– Balancing current at 240 mA
– Built-in balancing thermal management with
automatic pause and resume control
5 V LDO output to power external digital isolator
UART Host interface
Built-in SPI master
CVDD
VCC1
VCC
MCU
UART
Current sense
Rs
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to
change without notice.
ADVANCE INFORMATION
1
BQ75614-Q1
SLUSDT6 – SEPTEMBER 2019
www.ti.com
4 Device and Documentation Support
4.1 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper
right corner, click on Alert me to register and receive a weekly digest of any product information that has
changed. For change details, review the revision history included in any revised document.
4.2 Support Resources
TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight
from the experts. Search existing answers or ask your own question to get the quick design help you need.
Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do
not necessarily reflect TI's views; see TI's Terms of Use.
4.3 Trademarks
SafeTI, E2E are trademarks of Texas Instruments.
4.4 Electrostatic Discharge Caution
ADVANCE INFORMATION
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
4.5 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
5 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
2
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
Product Folder Links: BQ75614-Q1
PACKAGE OPTION ADDENDUM
www.ti.com
26-Nov-2019
PACKAGING INFORMATION
Orderable Device
Status
(1)
PBQ75614PAPQ1
ACTIVE
Package Type Package Pins Package
Drawing
Qty
HTQFP
PAP
64
160
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
TBD
Call TI
Call TI
Op Temp (°C)
Device Marking
(4/5)
-40 to 125
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
Samples
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AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD
PARTY INTELLECTUAL PROPERTY RIGHTS.
These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate
TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable
standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you
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Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2019, Texas Instruments Incorporated
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