AMT49413GEVATR - 50V Brushless DC Motor Driver IC | Allegro | 48-QFN
MPN: GEVATR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.85 | $38.50 |
| 100 | $3.42 | $342.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.74 | $2,740.00 |
| 3,000 | $2.4 | $7,200.00 |
GEVATR Overview
A Brushless DC (BLDC) motor driver is an integrated power-electronics subsystem that converts DC bus voltage into three-phase PWM waveforms timed by the rotor's electrical position, providing higher efficiency, longer life, and lower acoustic noise than brushed DC motors. BLDC motor drivers belong to the broader hierarchy: motor driver -> power management IC -> semiconductor. The AMT49413 integrates the control logic, gate drivers, current-sense amplifier, and protection blocks that previously required a discrete MCU plus FET bridge.
Key specifications include a 50V absolute maximum supply rating, integrated 5V LDO for logic supply, programmable PWM frequency, soft-start, cycle-by-cycle current limiting, fault output, and thermal shutdown. The 48-QFN-EP package provides an exposed pad that lowers junction-to-ambient thermal resistance to about 28 C/W on a 4-layer 1-oz PCB, supporting continuous output currents up to several amps depending on the external MOSFET selection.
The AMT49413 uses Allegro's synchronous rectified sensorless control architecture with adjustable lead angle and dynamic overcurrent thresholds. Its bootstrap-based high-side gate driver supports 100% duty-cycle operation, eliminating the audible motor-tick that plagues 6-step commutation schemes during low-speed PWM. The IC accepts a speed command from a 0-5V analog input or external PWM and outputs a tachometer (FG) signal and direction (RD) flag for closed-loop feedback.
Typical applications include sensorless BLDC fans and pumps, appliance motors (washing-machine drain pumps, dishwasher circulation pumps, refrigerator compressors), HVAC blowers, and small industrial drives. The wide 5.5V-50V input range allows direct connection to 12V, 24V, and 36V battery rails without pre-regulation.
When designing with the AMT49413GEVATR, pair the IC with N-channel MOSFETs whose drain-source voltage rating exceeds the maximum DC bus by at least 30% (i.e., >=75V for a 50V bus), and place the bootstrap capacitors close to the BST-CPHx pin pairs. Verify that the chosen MOSFET's total gate charge (Qg) does not push the internal regulator below the bootstrap refresh threshold at the chosen PWM frequency.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving procurement and design engineers a single source for the AMT49413GEVATR.
Drop-in alternatives for GEVATR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with GEVATR (same form factor and footprint) — differing in Motor Type, Output Configuration, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
A49413GEVATR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
A4931GEVATR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AMT49413GEVATR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.1 / Unit
View Datasheet →GEVATR Maximum Ratings & Electrical Characteristics
| Motor Type | Three-phase brushless DC (BLDC) |
| Supply Voltage Range | 5.5 V to 50 V |
| Absolute Maximum Supply Voltage | 50 V |
| Output Configuration | 3-phase bridge driver for external N-MOSFETs |
| Control Scheme | Sensorless BEMF (back-EMF) commutation |
| PWM Frequency | Programmable (typ. 20 kHz to 60 kHz) |
| Internal Logic Regulator | 5 V LDO |
| Logic I/O Voltage | 3.3 V and 5 V compatible |
| Current Sense Amplifier | Integrated, programmable gain |
| Protection Features | UVLO, OVLO, cycle-by-cycle current limit, thermal shutdown, locked-rotor |
| Operating Temperature Range | -40 C to +85 C (commercial grade) |
| Package | 48-QFN-EP (7x7 mm), exposed thermal pad |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| Compliance | RoHS compliant (Pb-free) |
GEVATR 48-qfn-ep (7x7 mm), exposed thermal pad Pin Configuration Guide
Pin configuration for GEVATR (48-qfn-ep (7x7 mm), exposed thermal pad package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for GEVATR.
Refer to the datasheet for full pin configuration.
Typical Applications
GEVATR is suitable for 6 applications: Sensorless BLDC Pump Drive, HVAC Blower Fan Controller, Appliance White-Goods Drives, Industrial Small-Variable-Frequency Drives, Battery-Powered Cordless Tool Motors, Automotive Auxiliary Fan and Pump Drivers.
Sensorless BLDC Pump Drive
The AMT49413GEVATR's 5.5V to 50V operating range and integrated sensorless BEMF algorithm make it a strong fit for 12V, 24V, and 36V brushless DC pump applications. Its 48-QFN-EP exposed-pad package keeps junction temperatures low even with continuous pump load, while cycle-by-cycle current limiting protects the windings from locked-rotor stall. Drop it onto the pump PCB and connect three external N-MOSFETs in a half-bridge configuration; the Allegro sensorless algorithm auto-starts the rotor without Hall sensors, saving BOM cost and improving reliability in wet or dusty pump environments such as washing-machine drain pumps and dishwasher circulation pumps.
Recommended
HVAC Blower Fan Controller
The AMT49413GEVATR's programmable PWM frequency (20-60 kHz) and 0-5V analog speed input suit closed-loop HVAC blower control where quiet operation and smooth speed adjustment are required. The integrated 5V LDO powers external logic, and the exposed thermal pad supports continuous operation at elevated ambient temperatures found in air-handler cabinets. Designers benefit from sensorless commutation because blowers live in dusty plenums where Hall sensors would fail. Compared with a discrete MCU plus gate driver solution, the AMT49413 reduces firmware burden and shrinks BOM by 30-40%.
Recommended
Appliance White-Goods Drives
The AMT49413GEVATR's commercial-grade specifications, sensorless operation, and wide supply range make it ideal for refrigerator compressors, washing-machine drum motors, and dishwasher wash pumps. The 48-QFN-EP (7x7 mm) footprint fits within the compact motor-control PCBs typical of modern appliances, while the integrated protection suite (UVLO, OVLO, locked-rotor, thermal shutdown) meets IEC 60335 household-appliance safety expectations. Replacing brushed motors with sensorless BLDC controlled by the AMT49413 yields 20-30% efficiency gains and quieter operation - key consumer-visible benefits.
Recommended
Industrial Small-Variable-Frequency Drives
Small industrial VFDs for conveyors, mixers, and small fans benefit from the AMT49413GEVATR's sensorless control and 5.5V-50V range, which covers common 24V and 48V industrial bus rails without pre-regulation. The IC's nFAULT output and tachometer (FG) signal interface with industrial PLCs and HMIs, while the integrated current-sense amplifier reduces analog front-end complexity. Compared with discrete MCU + 3-phase FET solutions, the AMT49413 reduces firmware development time by 50% and simplifies EMC compliance.
Recommended
Battery-Powered Cordless Tool Motors
The AMT49413GEVATR's 5.5V minimum supply voltage makes it usable with 6-cell NiMH or 2-3S Li-ion battery packs typical of cordless drills, screwdrivers, and garden tools. Sensorless BEMF control eliminates fragile Hall sensors, improving drop tolerance and extending tool life in harsh jobsite conditions. The exposed-pad QFN-EP package allows the motor-control PCB to fit inside the tool handle. Design tip: pair the AMT49413 with low-Qg N-MOSFETs (e.g., 30V/60V rated) to maximize battery runtime and minimize switching losses.
Recommended
Automotive Auxiliary Fan and Pump Drivers
While the AMT49413GEVATR itself is commercial grade, its pin-compatible A4931GEVATR cousin is AEC-Q100 qualified for automotive auxiliary applications such as engine-cooling fans, EV battery-coolant pumps, and HVAC blowers. The 50V absolute maximum rating handles 12V/24V automotive load-dump transients (per ISO 7637-2) when paired with appropriate TVS protection. For automotive designs requiring ASIL documentation, however, an additional system-level safety analysis is mandatory even with the A4931.
Recommended
Recommended Products Summary
Engineering reference data for GEVATR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A49413GEVATR | A4931GEVATR | AMT49413GEVATR |
|---|---|---|---|---|
| Brand | Allegro MicroSystems | Allegro MicroSystems | Allegro MicroSystems | Allegro MicroSystems |
| Package | 48-QFN-EP (7x7 mm) | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same |
| Motor Type | 3-phase BLDC (sensorless) | 3-phase BLDC (sensorless) | 3-phase BLDC (sensorless) | 3-phase BLDC (sensorless) |
| Supply Voltage | 5.5V to 50V | 5.5V to 50V | 5.5V to 50V | 5.5V to 50V |
| Operating Temperature | -40C to +85C (commercial) | -40C to +125C (extended) | -40C to +125C (automotive) | -40C to +85C (commercial) |
| AEC-Q100 Qualified | No | No | Yes (automotive grade) | No |
| Pin-to-Pin Compatible | Yes (with all listed alternatives) | Yes | Yes | Yes |
| Output Configuration | Gate driver for external N-MOSFETs | Gate driver for external N-MOSFETs | Gate driver for external N-MOSFETs | Gate driver for external N-MOSFETs |
Key Differentiators
- Sensorless BEMF algorithm proven in millions of Allegro production units (vs DRV8313 (TI))
- Wide 5.5V to 50V supply range from a 7x7 mm QFN-EP package (vs A4931 (Allegro automotive))
- External N-MOSFET topology gives designers freedom on Rdson selection (vs AMT49701 (Allegro brushed DC))
Design Notes
Estimated: at VIN = 24 V, VDS drop = 1 V across the external MOSFET bridge at 5 A continuous, the AMT49413GEVATR itself dissipates roughly 0.6 W from internal LDO and gate-drive losses (assuming 50 nC total Qg at 25 kHz). With the 48-QFN-EP theta_JA around 28 C/W on a 4-layer 1-oz PCB, junction temperature rises ~17 C above ambient - well within the 85 C commercial rating. Stencil design should maximize the thermal-pad solder coverage to at least 80% to maintain this thermal performance.
Place the three bootstrap capacitors (BSTx to SHx) within 3 mm of their respective IC pins, using 100 nF X7R ceramics rated for at least 25 V. The DC-bus decoupling capacitor (typically 100 uF / 63 V electrolytic in parallel with 1 uF / 100 V ceramic) must sit within 10 mm of the PVCC pin to suppress ringing from external MOSFET switching. Keep the SHx (phase high-side return) traces short to minimize parasitic inductance that would otherwise stress the bootstrap diode at high PWM duty cycles.
Do not operate the AMT49413GEVATR below 5.5 V or above 50 V - both conditions trigger protection lockout or risk permanent damage. When using the sensorless algorithm at very low speeds (< 5% of rated RPM), allow the IC to enter its pre-defined open-loop start-up profile before switching to closed-loop BEMF mode, or the rotor may stall. Verify that chosen external N-MOSFETs have VDS >= 60 V for a 24 V bus (>= 80% margin over the 50 V abs-max) to survive load-dump transients.
Route the low-level signal ground (LGND) and power ground (PGND) as separate nets that join only at the IC's exposed thermal pad. The CSA (current-sense amplifier) input trace should be a 4-terminal Kelvin connection to the low-side MOSFET source pad to avoid ground-bounce-induced current-limit errors. Keep the OSC and ITrip programming resistors within 5 mm of their pins; long traces pick up motor noise and degrade start-up reliability.
The 48-QFN-EP package keeps the high-side gate-drive loop area minimal, but the external MOSFETs still radiate dv/dt. Slow the MOSFET turn-on by adding a 10-22 ohm gate resistor, and use a ferrite bead on the DC-bus supply rail to suppress common-mode emissions above 30 MHz. For CE/FCC compliance, expect to add a pi-filter (LC) on the supply input; the AMT49413 itself does not require any additional EMI mitigation beyond standard PCB practice.
Compliance Information
RoHS and REACH compliant per Allegro product page. Not AEC-Q100 qualified (commercial grade); choose A4931GEVATR for AEC-Q100. Halogen-free status not explicitly stated in scraped sources.
