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Infineon Technologies TLE9012DQUXUMA1
- Part No.:
- TLE9012DQUXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Battery Management
- Package:
- 48-TQFP Exposed Pad
- Datasheet:
-
TLE9012DQUXUMA1.pdf
- Description:
- BATTERYMANAGEMENT_ICS
- Quantity:
- Payment:
- Shipping:
Inventory:8,124
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Product details
Overview
TLE9012DQUXUMA1 from Infineon Technologies is a 12-channel lithium-ion battery cell monitoring and balancing IC for automotive BMS stacks. It integrates 16-bit delta-sigma ADCs per cell (±0.2 mV initial accuracy), on-chip balancing switches (200 mA), five external NTC inputs, two internal temperature sensors, and iso-UART daisy-chain communication up to 38 devices at 2 Mbit/s - deployed in HEV/PHEV/BEV traction battery packs and 48 V ESS systems.
For engineers reviewing the TLE9012DQUXUMA1 datasheet, TLE9012DQUXUMA1 pinout, TLE9012DQUXUMA1 application, or TLE9012DQUXUMA1 equivalent, key selection criteria include ASIL D compliance, differential iso-UART robustness, cell voltage measurement lifetime drift (<1 LSB over 10 years), integrated round-robin diagnostics, and hot-plug support for modular battery pack servicing.
Technical Context
The TLE9012DQUXUMA1 implements a dual-ADC architecture: primary 16-bit delta-sigma converters per cell for high-precision voltage monitoring, plus a secondary ADC with identical averaging filter characteristics for end-to-end safety validation. Its measurement control unit executes automatic open-wire, overcurrent, undercurrent, and NTC fault detection via hardware-accelerated round-robin sequencing.
Communication uses isolated UART (iso-UART) with CRC-secured frames and wake-from-bus capability (EMM), enabling daisy-chained topologies without optocouplers. The PMU includes main and sleep regulators, dual oscillators, and watchdog logic compliant with ISO 26262 ASIL D as a Safety Element out of Context.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell channels | 12 independent Li-ion cell voltage monitoring inputs with dedicated 16-bit ΔΣ ADCs |
| Voltage accuracy | ±0.2 mV typical initial error at ambient temperature; <1 LSB lifetime drift after 10 years |
| Cell balancing | Integrated MOSFET switches per channel supporting 200 mA continuous balancing current |
| Temp sensing | 5 external NTC channels + 2 internal diode sensors; all compensated via digital stress sensor algorithm |
| Communication | Differential iso-UART interface: 2 Mbit/s max, CRC-secured frames, up to 38 daisy-chained devices |
| Safety certification | ISO 26262 SEooC qualified for ASIL D; AEC-Q100 Grade 1 validated |
| Package | PG-TQFP-48 (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant green product |
Pinout & Package
Package: PG-TQFP-48 (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pinout supports direct cell connection topology: odd-numbered pins (U0–U12) are cell voltage sense inputs (negative terminals); even-numbered pins (G0–G11) serve as balancing switch outputs and reference nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| U0–U12 | Cell voltage sense input (negative) | Direct connection to cell stack nodes; U0 tied to local GND, U12P to top cell positive terminal |
| G0–G11 | Cell balancing switch output / reference | Drives external balancing FETs or connects to internal 200 mA switches; defines local ground reference per stage |
| TMP0–TMP4 | NTC temperature sensor input | Configurable analog inputs for external thermistors; internally digitized with compensation for self-heating and stress effects |
| IFH_H / IFH_L / IFL_H / IFL_L | iso-UART differential bus interface | High- and low-side isolated UART lines enabling noise-immune daisy-chain communication without galvanic isolation components |
| GPIO0 / UART_LS, GPIO1 / UART_HS | Multi-function I/O | Supports UART low-speed interface or general-purpose digital I/O; configurable for EEPROM interface or PWM driver control |
| ERR | Open-drain fault indicator | Asserts low on critical failures (e.g., ADC timeout, CRC error, thermal shutdown) to trigger host controller emergency response |
Key Features
| Feature | Design Value |
|---|---|
| Hot-plug support | Enables live insertion/removal of battery modules during system operation without disrupting communication or measurement integrity |
| End-to-end CRC secured iso-UART | Guarantees data integrity across full daisy-chain path - detects bit errors in register writes, reads, and diagnostic responses |
| Automatic round-robin diagnostics | Hardware-executed sequence performs open-load, open-wire, NTC unit, and balancing overcurrent checks without host CPU intervention |
| Stress-compensated temperature sensing | Digital compensation algorithm corrects for mechanical stress-induced resistance shifts in NTC elements, improving thermal accuracy in rigid pack assemblies |
| Wake-from-bus (EMM) | Allows device to transition from deep sleep to active state upon detection of valid iso-UART frame, reducing standby power in parked vehicles |
Applications
| Hybrid Electric Vehicle (HEV) Battery Pack | 48 V Mild Hybrid Energy Storage System |
|---|---|
|
Use Scenario: Monitoring 12S Li-ion modules in parallel-connected HEV traction battery stacks with dynamic load cycling and regenerative braking. IC Role / Device Role / Timing Role: Primary cell supervisor IC performing simultaneous voltage acquisition, thermal mapping, and passive balancing coordination across all cells. Use Value: Enables ±0.2 mV cell voltage resolution to detect early imbalance onset and prevent capacity degradation during frequent charge/discharge cycles. |
Use Scenario: Managing distributed 48 V Li-ion sub-packs in start-stop and torque-assist systems where space and weight constraints limit cooling and redundancy. IC Role / Device Role / Timing Role: Standalone cell monitor with integrated diagnostics executing autonomous open-wire and NTC fault detection during vehicle ignition sequences. Use Value: Reduces BOM count by eliminating external isolators and discrete ADCs while maintaining ASIL D compliance for safety-critical 48 V functions. |
| Plug-in Hybrid (PHEV) Modular Battery Architecture | Energy Storage System (ESS) Rack-Level Monitoring |
|
Use Scenario: Scalable daisy-chained monitoring of up to 38 TLE9012DQUXUMA1 devices across multiple PHEV battery racks with hot-swap serviceability. IC Role / Device Role / Timing Role: Distributed node in hierarchical BMS, handling local cell data acquisition and forwarding CRC-validated results via iso-UART to master controller. Use Value: Achieves 2 Mbit/s inter-device throughput to maintain sub-100 ms full-stack refresh rate despite 38-node chain length. |
Use Scenario: Continuous monitoring of stationary Li-ion storage units in grid-tied ESS installations subject to wide ambient temperature swings and long-term aging. IC Role / Device Role / Timing Role: Long-life cell supervisor providing lifetime-stable voltage measurements (<1 LSB drift over 10 years) and stress-compensated thermal readings. Use Value: Extends calibration interval and reduces maintenance frequency in unattended ESS deployments through intrinsic measurement stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery cell monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ79616-Q1 (TI) | 16-bit SAR ADC (vs. ΔΣ), no integrated balancing switches, requires external FET drivers | Targets higher-channel-count stacks (>16 cells) with centralized balancing; lacks on-chip 200 mA switches | Select when system-level balancing control or higher sampling rate (1 kHz vs. 100 Hz) is prioritized over integration density |
| AD8452 (Analog Devices) | Analog front-end only (no MCU, no iso-UART, no diagnostics engine); requires external processor and isolation | Used in custom BMS designs with proprietary safety firmware and flexible communication protocols | Select when full architectural control over diagnostics, timing, and fault response is required beyond SEooC-certified blocks |
Compared with BQ79616-Q1 and AD8452, the TLE9012DQUXUMA1 delivers highest integration for ASIL D-compliant automotive applications - combining precision measurement, autonomous diagnostics, daisy-chain communication, and passive balancing in a single PG-TQFP-48 package.
Availability
TLE9012DQUXUMA1 is available at Aetrix Electronics and suitable for hybrid electric vehicle (HEV), plug-in hybrid electric vehicle (PHEV), and energy storage system (ESS) applications requiring stable component supply, long-lifecycle support, and automotive-grade traceability.
Supply support for TLE9012DQUXUMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with leadership in automotive-grade BMS solutions.
The TLE9012DQUXUMA1 belongs to Infineon's TLE90xx battery monitoring IC family, designed specifically for functional-safety-compliant, high-precision cell supervision in automotive traction batteries and 48 V systems.
FAQ
What is the maximum number of TLE9012DQUXUMA1 devices that can be daisy-chained?
Up to 38 TLE9012DQUXUMA1 devices can be connected in a daisy-chain configuration using the differential iso-UART interface. This is enabled by robust signal integrity at 2 Mbit/s and built-in frame synchronization, allowing scalable monitoring of large battery packs without additional isolation components.
Does the TLE9012DQUXUMA1 require external balancing FETs?
No - the TLE9012DQUXUMA1 integrates on-die balancing switches capable of delivering up to 200 mA per channel continuously. These switches connect directly to cell terminals via Gx/Ux pins, eliminating the need for external MOSFETs in most passive balancing implementations.
How does the TLE9012DQUXUMA1 achieve ASIL D compliance without a safety microcontroller?
The device is certified as a Safety Element out of Context (SEooC) per ISO 26262, with hardware-based diagnostics including dual-ADC cross-checking, round-robin fault detection, CRC-secured communication, and independent watchdog timers - all implemented in dedicated analog/digital logic, not software.
Can the TMPx pins be repurposed if external NTCs are not used?
Yes - unused TMP4–TMP0 pins can be configured as 0–2 V auxiliary ADC inputs for measuring miscellaneous analog signals (e.g., pack current shunt voltage, reference voltages), provided they are pulled down with >10 kΩ resistors to GND when disabled.
TLE9012DQUXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 48-TQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Balancing
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1 ~ 12
- Fault Protection:
- Over Current, Over/Under Voltage, Short Circuit
- Interface:
- UART
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TQFP-48-9
TLE9012DQUXUMA1 FAQ
1.How can I place an order for TLE9012DQUXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE9012DQUXUMA1 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 TLE9012DQUXUMA1 reliable?
The price and inventory of TLE9012DQUXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE9012DQUXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE9012DQUXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE9012DQUXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE9012DQUXUMA1?
TLE9012DQUXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE9012DQUXUMA1 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 TLE9012DQUXUMA1?
For technical support, including TLE9012DQUXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE9012DQUXUMA1 requirements.
6.How does Aetrix verify that TLE9012DQUXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE9012DQUXUMA1 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 TLE9012DQUXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE9012DQUXUMA1?
All TLE9012DQUXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE9012DQUXUMA1, 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 TLE9012DQUXUMA1 part is unused and in its original packaging.
Return procedure for TLE9012DQUXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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