AMT49413GEVATR - 50V Brushless DC Motor Driver IC | Allegro | 48-QFN
Référence : GEVATR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 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 Présentation
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.
Alternatives de remplacement direct pour GEVATR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec GEVATR (même facteur de forme et même empreinte) — différant par Motor Type, Output Configuration, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
A49413GEVATR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
A4931GEVATR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
AMT49413GEVATR
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.1 / unité
Voir la fiche technique →GEVATR Valeurs maximales et caractéristiques électriques
| Motor Type | Three-phase brushless DC (BLDC) |
| Supply Voltage Range | 5.5 V to 50 V |
| Absolute Maximum Supply Voltage | 50 V |
| Configuration de sortie | 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 |
| Plage de température de fonctionnement | -40 C to +85 C (commercial grade) |
| Boîtier | 48-QFN-EP (7x7 mm), exposed thermal pad |
| Type de montage | Surface Mount |
| Niveau MSL | 3 (per JEDEC J-STD-020) |
| Compliance | RoHS compliant (Pb-free) |
Guide de configuration des broches du GEVATR 48-qfn-ep (7x7 mm), exposed thermal pad
Configuration des broches du GEVATR (boîtier 48-qfn-ep (7x7 mm), exposed thermal pad). Ce composant de puissance comporte des bornes de grille, de drain et de source. Pour les boîtiers non polarisés, consultez la fiche technique du fabricant pour l'orientation exacte de la broche 1 et les détails de l'empreinte. Les applications courantes incluent la conception d'alimentations, la commande de moteurs et la commutation de charges.
Aucune donnée de brochage détaillée disponible pour GEVATR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
GEVATR convient pour 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.
Recommandé
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%.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour GEVATR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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))
Notes de conception
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.
Informations de conformité
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.
