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Allegro MicroSystems A4916KJPTR-T-2
- Part No.:
- A4916KJPTR-T-2
- Manufacturer:
- Allegro MicroSystems
- Category:
- Motor Drivers, Controllers
- Package:
- 48-LQFP Exposed Pad
- Datasheet:
-
A4916KJPTR-T-2.pdf
- Description:
- ASIL BLDC MOSFET GATE DRIVER W/N
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
A4916KJPTR-T-2 from Allegro MicroSystems is a three-phase N-channel MOSFET gate driver IC designed for automotive BLDC motor control, featuring 5.5–50 V supply operation, integrated charge pump for gate drive down to 7 V battery input, and ASIL D-capable safety architecture per ISO 26262:2011 (pending assessment).
For engineers reviewing the A4916KJPTR-T-2 datasheet, A4916KJPTR-T-2 pinout, A4916KJPTR-T-2 application, or A4916KJPTR-T-2 equivalent, this device supports SPI-configurable dead time, shoot-through protection, programmable gate drive voltage, logic-level phase monitors, and diagnostics verification - critical for safety-critical motor control in automotive powertrain and EPS systems.
Technical Context
The A4916KJPTR-T-2 implements a dedicated three-phase bridge driver architecture with independent high-side and low-side gate drive outputs per phase, enabled by a charge pump regulator that sustains gate bias above battery voltage down to 7 V and extends functional operation to 5.5 V via reduced gate drive mode. It integrates crossover control logic and user-programmable dead time to prevent shoot-through in N-MOSFET bridges.
Control is supported via TTL-compatible parallel inputs or a 4-wire SPI interface (clock, data in/out, chip select), enabling real-time configuration of gate drive voltage, dead time, fault masking, and diagnostic reporting. Diagnostics cover overcurrent, undervoltage lockout, thermal shutdown, and open-load detection, with status readable via SPI and output on dedicated fault pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5.5 V to 50 V - supports wide automotive battery transients and cold-crank operation down to 5.5 V with degraded gate drive. |
| Gate Drive Voltage | Programmable 8–12 V - enables optimization of switching loss vs. conduction loss for specific MOSFETs. |
| Operating Temperature | −40 °C to 150 °C - qualified per AEC-Q100 Grade 0, suitable for under-hood motor control environments. |
| Dead Time Control | Adjustable 0–2 µs - prevents shoot-through during high-frequency PWM commutation in BLDC drives. |
| Diagnostic Coverage | Multiple internal/bridge/system faults with SPI-readback and hardware fault flag - meets ASIL D diagnostic requirements when used per safety manual. |
| Interface Type | SPI + parallel TTL inputs - allows flexible integration with microcontrollers or DSPs for either full serial control or direct logic-mode operation. |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 mm, 1.6 mm height) with exposed thermal pad (suffix 'JP'); lead-free, 100% matte-tin plating; JEDEC MS-026 BBCHD compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBB | High-side bootstrap supply input | Connects to bootstrap capacitor to generate gate drive voltage above battery for high-side N-MOSFETs. |
| VDD | Main logic and charge pump supply | Accepts 5.5–50 V; powers internal regulators, logic, and charge pump circuitry. |
| PHASE_A/B/C | Phase state monitor outputs | Logic-level open-drain outputs indicating instantaneous high/low state of each half-bridge leg. |
| FAULT | Active-low diagnostic flag | Asserted on detected fault (e.g., overcurrent, UVLO, thermal shutdown); configurable mask via SPI. |
| CS, SCLK, SDI, SDO | SPI interface signals | Enable read/write access to 16-bit register map for configuration, status, and diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| ASIL D-capable safety architecture | Hardware safety element out of context per ISO 26262:2011 (pending assessment), with diagnostic verification support via SPI. |
| Charge pump + bootstrap gate drive | Enables full N-MOSFET three-phase bridge operation from 7 V battery; extends functional range to 5.5 V with reduced gate drive. |
| Programmable dead time (0–2 µs) | Prevents shoot-through across all six MOSFETs without external timing components; adjustable per application switching frequency. |
| Integrated diagnostics with SPI readback | Detects overcurrent, UVLO, thermal fault, open load, and bridge faults; status registers accessible for system-level fault handling. |
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +150 °C ambient operation - suitable for engine compartment and EPS module placement. |
Applications
| Electric Power Steering (EPS) | Automotive HVAC Blower |
|---|---|
Use Scenario: High-reliability motor control in steering assist modules requiring functional safety compliance and robust fault response. IC Role / Device Role / Timing Role: Three-phase gate driver managing 6 N-MOSFETs in inverter bridge; provides ASIL D diagnostics and shoot-through protection. Use Value: Enables safe torque delivery during fault conditions via configurable fault masking and verified diagnostic reporting per ISO 26262. | Use Scenario: Variable-speed blower motor control in climate systems with wide input voltage range and thermal stress. IC Role / Device Role / Timing Role: Gate driver delivering programmable gate voltage and dead time to optimize efficiency and EMI in 12 V/24 V HVAC inverters. Use Value: Charge pump + bootstrap operation ensures stable gate drive during cold-crank (down to 5.5 V), preventing motor stall. |
| Electric Brake Actuators | Onboard Charger (OBC) Auxiliary Motor Control |
Use Scenario: Safety-critical actuation in electro-mechanical brake systems requiring high-integrity motor control. IC Role / Device Role / Timing Role: SPI-configurable driver supporting diagnostic verification and fault-safe shutdown sequences per vehicle safety plan. Use Value: Integrated logic-level phase monitors enable real-time commutation feedback to host controller without external sensing. | Use Scenario: Cooling fan or pump control within OBC modules operating in high-temperature, high-vibration environments. IC Role / Device Role / Timing Role: Robust gate driver with AEC-Q100 Grade 0 rating and exposed thermal pad for sustained 150 °C junction temperature operation. Use Value: Exposed thermal pad and optimized package layout reduce thermal resistance by >30% vs. standard LQFP, improving long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV3205A-Q1 | Higher max supply voltage (65 V), no integrated charge pump - requires external high-side supply or bootstrap diode network. | Lacks ASIL D hardware safety features and diagnostic verification capability; suited for non-safety-critical auxiliary drives. | Choose when higher voltage headroom is needed and safety certification is not required. |
| STSPIN32F0B | Integrated 32-bit ARM Cortex-M0 MCU + gate driver; no external SPI interface needed but fixed firmware architecture. | Not ASIL D-certified; diagnostics implemented in firmware - less deterministic than A4916KJPTR-T-2's hardware-based safety logic. | Choose for cost-sensitive, lower-complexity BLDC systems where MCU integration reduces BOM count. |
Compared with DRV3205A-Q1 and STSPIN32F0B, the A4916KJPTR-T-2 uniquely delivers hardware-based ASIL D safety architecture, charge pump-enabled low-voltage operation, and fully configurable SPI diagnostics - making it the only option qualified for safety-critical automotive powertrain functions requiring certified hardware safety elements.
Availability
A4916KJPTR-T-2 is available at Aetrix Electronics and suitable for electric power steering (EPS), automotive HVAC blowers, and brake actuator systems requiring stable component supply, long lifecycle support, and AEC-Q100-compliant performance.
Supply support for A4916KJPTR-T-2 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
Allegro MicroSystems is a U.S.-based designer and manufacturer of high-performance magnetic sensors, power ICs, and motor driver solutions, founded in 1989 and headquartered in Manchester, NH.
The A4916 product line delivers automotive-grade three-phase gate drivers with integrated safety, diagnostics, and thermal management - engineered specifically for functional safety-compliant BLDC motor control in EPS, braking, and thermal management systems.
FAQ
What is the maximum operating junction temperature for the A4916KJPTR-T-2?
The A4916KJPTR-T-2 is rated for a maximum junction temperature of 150 °C and qualified per AEC-Q100 Grade 0. Its 48-pin LQFP package with exposed thermal pad enables reliable thermal dissipation in high-power automotive motor control applications such as EPS and HVAC blowers. The device incorporates thermal shutdown protection that activates before reaching destructive temperatures.
Does the A4916KJPTR-T-2 support both block and sinusoidal commutation modes?
Yes, the A4916KJPTR-T-2 supports both block (six-step) and sinusoidal commutation through full independent control of all six gate drive outputs. Its SPI interface and parallel logic inputs allow precise timing and phase sequencing, while programmable dead time and gate drive voltage ensure optimal switching behavior for either excitation method in BLDC motor applications.
Is the A4916KJPTR-T-2 pin-compatible with earlier A4916 variants like A4916KJPTR-T?
Yes, the A4916KJPTR-T-2 shares identical pinout, package dimensions, and electrical characteristics with A4916KJPTR-T. Both use the same 48-pin LQFP-JP package and maintain backward compatibility in PCB layout and system integration - the "-2" suffix denotes a revised short-form datasheet version, not a hardware change.
How does the charge pump in the A4916KJPTR-T-2 enable operation below 7 V battery input?
The A4916KJPTR-T-2 does not operate below 7 V using the charge pump; rather, its charge pump sustains gate drive above battery voltage down to 7 V. Below 7 V, the device enters reduced gate drive mode (down to 5.5 V supply), where gate voltage is lowered to maintain functionality - confirmed in the datasheet's "Low-Supply Operation" section and validated by Allegro's safety manual for cold-crank scenarios.
Can the A4916KJPTR-T-2 be used without the SPI interface?
Yes, the A4916KJPTR-T-2 supports standalone operation using TTL-compatible parallel logic inputs (EN, DIR, MODE, etc.) for basic commutation control. SPI is optional and used only for advanced configuration - including dead time, gate voltage, fault masking, and diagnostic readback - making the A4916KJPTR-T-2 flexible for both simple and safety-critical implementations.
A4916KJPTR-T-2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 48-LQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Multiphase
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (3)
- Interface:
- SPI
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP-EP (7x7)
A4916KJPTR-T-2 FAQ
1.How can I place an order for A4916KJPTR-T-2 through Aetrix?
Please submit a Request for Quotation (RFQ) for A4916KJPTR-T-2 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 A4916KJPTR-T-2 reliable?
The price and inventory of A4916KJPTR-T-2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A4916KJPTR-T-2 is usually 5 days.
3.What payment methods are accepted for A4916KJPTR-T-2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A4916KJPTR-T-2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A4916KJPTR-T-2?
A4916KJPTR-T-2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A4916KJPTR-T-2 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 A4916KJPTR-T-2?
For technical support, including A4916KJPTR-T-2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A4916KJPTR-T-2 requirements.
6.How does Aetrix verify that A4916KJPTR-T-2 is sourced from the original manufacturer or authorized distributors?
All A4916KJPTR-T-2 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 A4916KJPTR-T-2 meets industry standards.
7.What is the process for return or replacement of A4916KJPTR-T-2?
All A4916KJPTR-T-2 units undergo pre-shipment inspection (PSI). If there is an issue with A4916KJPTR-T-2, 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 A4916KJPTR-T-2 part is unused and in its original packaging.
Return procedure for A4916KJPTR-T-2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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