My Inquiry
My Account
Texas Instruments BQ79616PAPR
- Part No.:
- BQ79616PAPR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 64-PowerTQFP
- Datasheet:
-
BQ79616PAPR.pdf
- Description:
- 16-S PRECISION BATTERY MONITOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,639
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BQ79616PAPR from Texas Instruments is a 16-series battery monitor IC with integrated cell balancing, hardware-based fault protection, and daisy-chain isolation. It delivers ±1.5 mV cell voltage accuracy, completes full 16-channel measurement in ≤128 µs, and supports autonomous thermal-managed balancing up to 240 mA-enabling high-precision state-of-charge estimation in EV traction battery packs.
For engineers reviewing the BQ79616PAPR datasheet, BQ79616PAPR pinout, BQ79616PAPR application, or BQ79616PAPR equivalent, this device is selected for HEV/EV BMS designs requiring fast, redundant voltage/temperature diagnostics, bus bar sensing, and SPI/UART host interface compatibility via BQ79600 bridge.
Technical Context
The BQ79616PAPR integrates dual independent ADCs (16-bit main, 14-bit auxiliary) with post-ADC configurable digital low-pass filters for DC-like voltage readings. Its architecture includes dedicated hardware comparators for overvoltage, undervoltage, overtemperature, and under-temperature protection-bypassing MCU dependency for critical safety responses.
It implements isolated differential daisy-chain communication with optional ring topology, using COMHP/COMHN/COMLP/COMLN pins and supporting transformer or capacitive isolation. The device features built-in redundancy paths for voltage and temperature diagnostics, plus an embedded fault signal and heartbeat protocol transmitted over the comms line.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Channels | 16-series monitoring with VC0–VC16 and CB0–CB16 terminals |
| ADC Accuracy | ±1.5 mV total channel error (–40°C to 105°C, 2 V–4.5 V range) |
| Measurement Speed | Full 16-cell voltage acquisition in ≤128 µs |
| Cell Balancing | Internal FETs with 240 mA max current and auto-pause/resume based on die temperature |
| Bus Bar Sensing | Differential BBP/BBN input with 5× gain for shunt or bus bar voltage measurement |
| Communication | Isolated daisy chain (COMx pins) + UART/SPI host interface; compatible with BQ79600 bridge |
| Operating Voltage | 9 V–80 V module input (BAT), with separate 5 V analog (AVDD), 1.8 V digital (DVDD), and 5 V comms (CVDD) rails |
Pinout & Package
Package: HTQFP-64 (10.00 mm × 10.00 mm, PAP suffix). Thermal resistance RθJA = 21.6 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BAT | Module high-side supply & sense reference | Connects to top of battery stack; serves as power input and voltage reference for all VC/CB channels |
| VC0–VC16 | Cell voltage sense inputs | Differential inputs measuring each cell's positive terminal (VC1–VC16) and bottom reference (VC0); require external RC filtering |
| CB0–CB16 | Cell balance FET connections | Direct connection points to internal balancing FETs; resistor value sets balancing current (max 240 mA) |
| BBP / BBN | Bus bar differential sense inputs | 5× gain path for measuring bus bar voltage drop or shunt-based current sensing |
| COMHP / COMHN / COMLP / COMLN | Daisy-chain transceiver I/O | Isolated bidirectional differential interface enabling up to 15-device stacks without optocouplers |
| GPIO1–GPIO8 | Configurable I/O | Support NTC thermistor bias (TSREF), external voltage sensing, digital I/O, or SPI controller functions |
| NFAULT | Hardware fault indicator | Active-low open-drain output signaling OV/UV/OT/UT faults independently of host communication |
Key Features
| Feature | Design Value |
|---|---|
| Redundant diagnostics path | Independent voltage and temperature measurement chains enable cross-checking for ASIL-D–aligned functional safety compliance |
| Autonomous thermal balancing control | On-die temperature monitoring triggers automatic pause/resume of balancing to prevent thermal runaway without host intervention |
| Integrated post-ADC digital filters | Configurable low-pass filters suppress noise and deliver stable DC-equivalent values for SOC algorithms |
| Embedded comms heartbeat | Continuous fault-aware status signal transmitted over daisy chain-detects open-circuit or comms failure without polling |
| Hardware reset emulation | Host-controlled signal mimics power-on reset behavior, enabling deterministic recovery after fault events |
Applications
| Electric Vehicle Traction Battery | Energy Storage System (ESS) Rack |
|---|---|
Use Scenario: Real-time monitoring of 16S LiNiMnCoO₂ cells in 400–800 V EV battery packs during regenerative braking and fast charging. IC Role / Device Role / Timing Role: Primary cell voltage and temperature monitor; executes sub-130 µs per-cycle measurements to support 100 ms control loop timing. Use Value: ±1.5 mV accuracy enables <0.5% SOC error over lifetime; integrated balancing reduces pack divergence by >70% vs. passive-only solutions. |
Use Scenario: Modular 16S LFP battery racks in grid-scale storage, operating at –25°C to 60°C ambient with daily 90% DOD cycling. IC Role / Device Role / Timing Role: Safety-critical protector and balancer; hardware comparators enforce OVP/UVP limits within 1 µs response time. Use Value: Built-in redundancy and diagnostic coverage meets IEC 62619 requirements; daisy-chain isolation eliminates ground-loop risks across multi-rack systems. |
| Hybrid Electric Vehicle (HEV) 48 V Mild Hybrid | Industrial UPS Battery Module |
Use Scenario: Compact 16S NMC battery in start-stop and torque-assist HEV systems with space-constrained PCB layout. IC Role / Device Role / Timing Role: Integrated front-end with simple RC filters replaces discrete op-amp conditioning; reduces BOM count by 12 components. Use Value: Pin-to-pin compatibility across BQ796xx family allows reuse of layout and firmware across 12S–16S platforms. |
Use Scenario: Mission-critical 16S lead-acid or Li-ion backup battery in telecom UPS, requiring zero false trips during voltage transients. IC Role / Device Role / Timing Role: Hardware-based protector with programmable hysteresis (e.g., 20°C thermal shutdown hysteresis) prevents nuisance shutdowns. Use Value: NFAULT output drives external contactor directly; eliminates need for secondary safety microcontroller in SIL-2 designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ79616QPAPR-Q1 | Automotive-grade variant with AEC-Q100 Grade 1 qualification (–40°C to +125°C), enhanced ESD (±8 kV HBM), and extended diagnostic coverage | Required for ISO 26262 ASIL-B automotive BMS; not qualified for industrial use | Select BQ79616QPAPR-Q1 when functional safety certification and automotive environmental stress testing are mandatory |
| MAX17853 | 16-channel monitor with 2.5 mV accuracy, no integrated balancing, uses SPI-only interface, and lacks bus bar sensing | Suitable for cost-sensitive industrial BMS where balancing is handled externally and bus bar current sensing is unnecessary | Choose MAX17853 only if balancing is implemented off-chip and ±2.5 mV accuracy meets SOC target; requires additional isolation components for daisy chain |
Compared with BQ79616PAPR, the BQ79616QPAPR-Q1 adds automotive qualification and tighter diagnostics but increases cost and footprint; MAX17853 offers lower integration and reduced accuracy, necessitating external circuitry for balancing and isolation-increasing design complexity and board area.
Availability
BQ79616PAPR is available at Aetrix Electronics and suitable for electric vehicle traction batteries, energy storage system racks, hybrid vehicle 48 V mild hybrid modules, and industrial UPS battery management requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for BQ79616PAPR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of experience in automotive and industrial battery systems.
The BQ796xx product line is designed specifically for high-voltage, high-reliability battery monitoring in electric mobility and grid storage-emphasizing precision, functional safety, and system-level integration to reduce BMS development time and validation risk.
FAQ
What is the maximum cell balancing current supported by the BQ79616PAPR?
The BQ79616PAPR supports up to 240 mA of internal cell balancing current per channel. This value is set by the external RC filter resistor connected to each CB pin and is thermally managed-the device automatically pauses balancing if die temperature exceeds the configured COOLOFF threshold and resumes once below the hysteresis band. The BQ79616PAPR datasheet specifies this capability under "CELL BALANCE" electrical characteristics.
Does the BQ79616PAPR include hardware-based overvoltage and undervoltage protection?
Yes, the BQ79616PAPR includes dedicated hardware comparators for overvoltage (OV), undervoltage (UV), overtemperature (OT), and undertemperature (UT) protection. These operate independently of the host MCU and trigger the NFAULT pin within 1 µs. Thresholds and hysteresis are programmable via registers, and the BQ79616PAPR maintains full functionality even during daisy-chain communication faults.
Can the BQ79616PAPR measure bus bar voltage for current sensing?
Yes, the BQ79616PAPR provides dedicated BBP and BBN pins for differential bus bar voltage measurement with 5× gain. This enables direct sensing of voltage drop across a bus bar or shunt resistor for high-accuracy current calculation. The measurement uses the same high-precision ADC as cell voltage sensing, with resolution of 30.52 µV/LSB and accuracy specified in the BQ79616PAPR electrical characteristics table.
What communication interfaces does the BQ79616PAPR support?
The BQ79616PAPR supports isolated daisy-chain communication via COMHP/COMHN/COMLP/COMLN pins (with transformer or capacitive isolation) and a UART/SPI host interface through RX/TX pins. It also functions as a communication bridge when paired with the BQ79600, enabling SPI-to-daisy-chain translation. All protocols are fully documented in the BQ79616PAPR register map and timing specifications.
Is the BQ79616PAPR pin-compatible with other devices in the BQ796xx family?
Yes, the BQ79616PAPR is pin-to-pin compatible with other 16-channel variants in the BQ796xx family, including the BQ79616QPAPR-Q1. This enables hardware reuse across automotive and industrial platforms. Firmware compatibility is maintained for core monitoring functions, though safety-critical diagnostics may require revalidation for the Q1 variant. The BQ79616PAPR datasheet confirms this in the "Description" section.
BQ79616PAPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- -
- Number of Cells:
- 6 ~ 16
- Fault Protection:
- -
- Interface:
- SPI, UART
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
BQ79616PAPR FAQ
1.How can I place an order for BQ79616PAPR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ79616PAPR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BQ79616PAPR reliable?
The price and inventory of BQ79616PAPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ79616PAPR is usually 5 days.
3.What payment methods are accepted for BQ79616PAPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ79616PAPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ79616PAPR?
BQ79616PAPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ79616PAPR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BQ79616PAPR?
For technical support, including BQ79616PAPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ79616PAPR requirements.
6.How does Aetrix verify that BQ79616PAPR is sourced from the original manufacturer or authorized distributors?
All BQ79616PAPR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BQ79616PAPR meets industry standards.
7.What is the process for return or replacement of BQ79616PAPR?
All BQ79616PAPR units undergo pre-shipment inspection (PSI). If there is an issue with BQ79616PAPR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BQ79616PAPR part is unused and in its original packaging.
Return procedure for BQ79616PAPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ79616PAPR Tags
-
BQ29700DSER
Texas Instruments
-
S-8241ABKMC-GBKT2G
ABLIC Inc.
-
S-8241ABPMC-GBPT2G
ABLIC Inc.
-
BQ27427YZFR
Texas Instruments
-
BQ27426YZFR
Texas Instruments
-
STC3117IJT
STMicroelectronics
-
STC3115IJT
STMicroelectronics
-
BQ76925RGER
Texas Instruments
-
NPM1100-QDAA-R
Nordic Semiconductor ASA
-
BQ27441DRZR-G1A
Texas Instruments
-
STC3115AIQT
STMicroelectronics
-
S-8252AAL-M6T1U
ABLIC Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
