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STMicroelectronics L9907TR
- Part No.:
- L9907TR
- Manufacturer:
- STMicroelectronics
- Category:
- Gate Drivers
- Package:
- 64-TQFP Exposed Pad
- Datasheet:
-
L9907TR.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,932
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Product details
Overview
L9907TR from STMicroelectronics is an AEC-Q100 qualified automotive 3-phase BLDC motor gate driver IC with six independent N-channel FET pre-drivers, 8 MHz SPI interface, dual programmable current sense amplifiers, and integrated boost regulator supporting 4.2–54 V battery input. It delivers up to 600 mA gate drive current per channel and enables PWM operation up to 20 kHz in electric power steering and brake booster systems.
For engineers reviewing the L9907TR datasheet, L9907TR pinout, L9907TR application, or L9907TR equivalent, key selection considerations include high-side driver voltage tolerance (−7 V to 90 V), configurable dead time and gate current levels via SPI, differential current sensing flexibility, and diagnostic coverage including overvoltage, undervoltage, overtemperature, and external MOSFET short-circuit detection.
Technical Context
The L9907TR implements a multi-rail power architecture: VB (4.2–54 V) powers the boost converter and high-side drivers; VCC (3.3 V/5 V) supplies logic; VDH monitors high-side drain voltage; and BST_C provides regulated boosted voltage for high-side gate driving. Its three half-bridge channels each feature independent PWM_Hx/PWM_Lx inputs and shoot-through protection via programmable dead time.
Two fully configurable differential current sense amplifiers (CSA1/CSA2) support phase-current or ground-current sensing with user-selectable gain (10×, 20×, 40×, 80×), offset calibration, and mode configuration via SPI. Fault reporting-including VB/VCC OV/UV, overtemperature, and external MOSFET overcurrent-is consolidated into SPI-accessible status registers with dedicated FS_FLAG output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.2 V to 54 V on VB pin; supports 12 V, 24 V, and 48 V automotive battery systems. |
| High-Side Driver Voltage Tolerance | Withstands −7 V to 90 V at GHSx pins; enables robust operation during load dump and reverse battery events. |
| Gate Drive Current | Adjustable up to 600 mA per channel via external resistor and SPI-selectable levels (25%/50%/75%/100%). |
| PWM Frequency Support | Up to 20 kHz switching; sufficient for high-efficiency BLDC commutation without audible noise. |
| SPI Interface | 8 MHz clock rate with full-duplex SDO/SDI, CS, and SCK; enables real-time parameter reconfiguration and fault diagnostics. |
| Current Sense Amplifiers | 2 × differential amplifiers with programmable gain (10×–80×), offset calibration, and selectable phase/ground sensing modes. |
| Protection Features | Integrated OV/UV on VB/VCC, overtemperature shutdown, external MOSFET overcurrent detection, and gate-to-source voltage limiting. |
Pinout & Package
TQFP64 (10 mm × 10 mm × 1.0 mm, exposed pad down) package with thermal pad optimized for automotive motor control PCB layouts and high-power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GLS_1–GLS_3 | Low-side gate driver outputs | Drive gates of N-channel low-side MOSFETs in phases 1–3; each capable of 600 mA sink/source. |
| GHS_1–GHS_3 | High-side gate driver outputs | Drive gates of N-channel high-side MOSFETs; supplied via bootstrap regulators referenced to SHSx pins. |
| PWM_H1–PWM_H3 / PWM_L1–PWM_L3 | Independent PWM inputs | Enable full 6-step commutation control; allow custom timing and dead-time insertion externally or via SPI. |
| IS1+/IS1−, IS2+/IS2− | Differential current sense inputs | Accept shunt-based phase or ground current measurements; support bidirectional sensing with programmable gain/offset. |
| FS_FLAG | Fault status flag output | Open-drain active-low signal indicating any active fault condition; simplifies system-level fault monitoring. |
| EN1 & EN2 | Enable control inputs | ANDed enable logic; EN1 doubles as safety regulator disable when REGOFF_EN bit is set in SPI CMD4 register. |
Key Features
| Feature | Design Value |
|---|---|
| Boost regulator for full RDS(on) | Maintains ≥10 V gate drive above VDH up to 6 V battery voltage, ensuring low conduction losses in cold-cranking conditions. |
| Programmable dead time | Configurable via SPI (CMD1 register) to prevent shoot-through across all three half-bridges independently. |
| Dual CSA with calibration | Each amplifier supports offset trimming and gain selection (10×–80×) via SPI, enabling precise torque/current control in safety-critical motors. |
| Full SPI diagnostic access | All faults (OV/UV, overtemp, short circuit, gate monitor errors) are readable and clearable via dedicated SPI registers with timestamped status bits. |
| Passive gate turn-off | Internal pull-down on all gate outputs during fault or disable ensures safe FET shutdown without external components. |
Applications
| Electric Power Steering (EPS) | Electric Brake Booster (EBB) |
|---|---|
Use Scenario: High-reliability 3-phase BLDC motor control in column-assist or rack-assist EPS systems operating across −40 °C to 150 °C ambient. IC Role / Device Role / Timing Role: Gate driver unit managing six external N-channel MOSFETs with real-time current feedback and fail-safe shutdown. Use Value: Enables ASIL-B compliant motor control via redundant diagnostics, programmable dead time, and SPI-accessible fault logging for ISO 26262 traceability. | Use Scenario: Compact, high-torque actuation in 12 V or 48 V EBB units requiring fast response and thermal resilience. IC Role / Device Role / Timing Role: Pre-driver controlling high-side/low-side FET pairs with integrated boost supply and phase current sensing. Use Value: Eliminates need for external gate drive supplies and current sense op-amps, reducing BOM count and board area while maintaining functional safety compliance. |
| Automotive HVAC Blower | Onboard Charger (OBC) Cooling Fan |
Use Scenario: Variable-speed blower motor in climate control systems with battery voltage ranging from 6 V (cold crank) to 16 V (load dump). IC Role / Device Role / Timing Role: 3-phase gate driver with adaptive gate current and current-sense-based torque regulation. Use Value: Maintains stable motor speed and acoustic performance across wide input voltage range using internal boost and programmable CSA gain. | Use Scenario: Forced-air cooling for OBC power modules where fan reliability directly impacts charger uptime and thermal derating. IC Role / Device Role / Timing Role: Motor controller with overtemperature and overcurrent protection linked to OBC thermal management signals. Use Value: Provides hardware-level fault isolation between fan and OBC control domain, satisfying separation requirements for ASIL-C systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-phase BLDC gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV3205-Q1 | Single-chip 3-phase driver with integrated 60-V half-bridge FETs; no external MOSFET support. | Suitable for lower-power (<500 W) fans/pumps; lacks programmable CSA and SPI configurability. | Select when board space is critical and external FETs are unnecessary. |
| MP6543A | 3-phase gate driver with 100-V tolerant high-side pins but no integrated boost regulator or current sense amplifiers. | Requires external boost and current sensing circuitry; limited diagnostic capability vs. L9907TR's full SPI register set. | Select when cost sensitivity outweighs diagnostic depth and cold-crank performance needs. |
Compared with DRV3205-Q1 and MP6543A, the L9907TR uniquely combines external FET flexibility, integrated boost for 6 V cold-crank operation, dual programmable CSAs, and comprehensive SPI-accessible diagnostics-making it optimal for ASIL-B/C automotive motor control where functional safety and design adaptability are mandatory.
Availability
L9907TR is available at Aetrix Electronics and suitable for electric power steering, electric brake booster, and HVAC blower applications requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100 compliance.
Supply support for L9907TR 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
STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management ICs, with deep expertise in functional safety and AEC-Q100 qualification.
The L9907TR belongs to ST's automotive gate driver product line, engineered specifically for high-reliability 3-phase BLDC motor control in safety-critical vehicle subsystems such as steering and braking.
FAQ
What is the purpose of the VDH pin on the L9907TR?
The VDH pin monitors high-side drain voltage to dynamically adjust the boost regulator output, ensuring stable gate drive voltage across wide battery ranges (e.g., 6 V cold crank to 16 V load dump). It serves as the reference for the boost converter's feedback loop and enables accurate high-side FET gate control under varying bus conditions.
How does the L9907TR handle shoot-through prevention?
The L9907TR prevents shoot-through via programmable dead time inserted between complementary high-side and low-side PWM signals, configured through SPI register CMD1. This hardware-enforced delay-combined with gate-to-source voltage limiting and passive pull-down during faults-ensures robust cross-conduction protection across all three phases.
Can the L9907TR operate without an external bootstrap capacitor?
No-the L9907TR requires external bootstrap capacitors (CBS1–CBS3) for high-side gate driving. Each CBSx pin connects to a dedicated capacitor that charges during low-side conduction and supplies gate voltage for the corresponding high-side FET; omission disables high-side output functionality.
What diagnostic data is accessible via the SPI interface?
The SPI interface provides full read/write access to 16 diagnostic registers covering VB/VCC OV/UV, overtemperature, external MOSFET overcurrent, gate monitor faults, CSA saturation, and SPI communication errors. All flags are latched, readable, and clearable via dedicated command frames (CMD1–CMD4), enabling complete system-level fault analysis.
L9907TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 64-TQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- 3-Phase
- Number of Drivers:
- 6
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 5V ~ 54V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- -
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 35ns, 35ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP-EP (10x10)
L9907TR FAQ
1.How can I place an order for L9907TR through Aetrix?
Please submit a Request for Quotation (RFQ) for L9907TR 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 L9907TR reliable?
The price and inventory of L9907TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L9907TR is usually 5 days.
3.What payment methods are accepted for L9907TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L9907TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L9907TR?
L9907TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L9907TR 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 L9907TR?
For technical support, including L9907TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L9907TR requirements.
6.How does Aetrix verify that L9907TR is sourced from the original manufacturer or authorized distributors?
All L9907TR 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 L9907TR meets industry standards.
7.What is the process for return or replacement of L9907TR?
All L9907TR units undergo pre-shipment inspection (PSI). If there is an issue with L9907TR, 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 L9907TR part is unused and in its original packaging.
Return procedure for L9907TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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