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MC33937APEK
NXP USA Inc.
IC MOTOR DRIVER 6V-58V 54SOIC
1883 Pcs New Original In Stock
Motor Driver NMOS SPI 54-SOIC-EP
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Minimum 1
5.0 / 5.0
- (309 Ratings)
MC33937APEK
Product Overview
7208699
DiGi Electronics Part Number
MC33937APEK-DGManufacturer
NXP USA Inc.
MC33937APEK
Description
IC MOTOR DRIVER 6V-58V 54SOICInventory
1883 Pcs New Original In Stock
Motor Driver NMOS SPI 54-SOIC-EP
Quantity
Minimum 1
Minimum 1
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MC33937APEK Technical Specifications
Category
Power Management (PMIC), Motor Drivers, Controllers
Packaging
Tube
Series
-
Product Status
Active
Motor Type - Stepper
-
Motor Type - AC, DC
Brushless DC (BLDC)
Function
Controller - Commutation, Direction Management
Output Configuration
Pre-Driver - Half Bridge (3)
Interface
SPI
Technology
NMOS
Step Resolution
-
Applications
-
Current - Output
-
Voltage - Supply
6V ~ 58V
Voltage - Load
-
Operating Temperature
-40°C ~ 135°C (TA)
Grade
Automotive
Mounting Type
Surface Mount
Package / Case
54-SSOP (0.295", 7.50mm Width) Exposed Pad
Supplier Device Package
54-SOIC-EP
Base Product Number
MC33937
Datasheet & Documents
Manuals
MPC8343(E) Ref Manual
HTML Datasheet
MC33937APEK-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
568-14566
2156-MC33937APEK
935311348574
NXPFREMC33937APEK
MC33937APEK-DG
Standard Package
26
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
배송이 빠르고, 제품도 깔끔하며 성능도 최고입니다. 아주 좋아요.
de desembre 02, 2025
每次都能享受到快速的送貨與熱心的售後服務，讓我非常放心選擇他們！
de desembre 02, 2025
Support après-vente au top, ils ont été très réactifs pour m'aider en cas de besoin.
de desembre 02, 2025
コストダウンに成功し、経営に非常に役立っています。
de desembre 02, 2025
The durability of their products is top-notch, ensuring minimal downtime.
de desembre 02, 2025
The website is extremely user-friendly, allowing me to find what I need effortlessly.
de desembre 02, 2025
Always impressed by the professionalism and dedication of DiGi Electronics’ support team.
de desembre 02, 2025
Delivery was quick, and the packaging was thoughtfully secure.
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Frequently Asked Questions (FAQ)
What are the key design risks when integrating the MC33937APEK in a high-temperature automotive BLDC motor control application?
When integrating the MC33937APEK in high-temperature environments near 135°C (TA), thermal management is critical despite its automotive-grade rating. The exposed pad must be properly soldered to a thermally conductive PCB area to dissipate heat from internal gate drivers. Without adequate PCB copper, junction temperatures may exceed limits under sustained SPI-controlled commutation. Also, ensure voltage headroom: with a minimum 6V supply, brown-out conditions can corrupt SPI commands. Use local filtering and watchdog timers to maintain reliable communication. Avoid long gate drive traces to minimize ringing, which could falsely trigger external NMOSFETs in half-bridge configurations.
Can the MC33937APEK replace the ON Semiconductor NCV7707AFNG in a 48V BLDC motor controller, and what are the key compatibility concerns?
The MC33937APEK can functionally replace the NCV7707AFNG in 48V BLDC systems but with important integration differences. Both are automotive-grade SPI-controlled pre-drivers, but the MC33937APEK drives three half-bridges (6 outputs) versus the NCV7707AFNG's quad low-side drive. The MC33937APEK requires external NMOSFETs for bridge construction, while the NCV7707AFNG directly drives solenoids. You must redesign the power stage: select matched high-side/low-side MOSFETs and add bootstrap circuitry. Also verify SPI timing—MC33937APEK uses mode-specific clocking. Validate dead-time control via software to prevent shoot-through, a risk not present in the direct-drive NCV7707AFNG.
How does the SPI interface of the MC33937APEK impact system reliability in electrically noisy motor environments?
The SPI interface on the MC33937APEK is susceptible to noise-induced glitches in high EMI environments typical of BLDC motor drives. To maintain reliability, use daisy-chained CRC checks if supported in firmware, or implement command validation via repeated register reads. Route SPI lines away from power traces, use series resistors near the MC33937APEK, and consider opto-isolation or common-mode chokes for longer traces. Also, enable the device's built-in fault reporting through SPI status registers to detect overcurrent or thermal events early. Avoid floating inputs—tie unused SPI chip-select lines with pull-down resistors.
What are the practical current limitations when using the MC33937APEK to drive high-power external MOSFETs in a traction motor application?
The MC33937APEK itself doesn’t sink output current—it drives external NMOSFET gates—so the current limits depend on MOSFET selection and thermal design. However, the internal driver current is typically ±200mA source/sink, which may be insufficient for very large gate charges (Qg > 100nC) at high PWM frequencies (>20kHz). For traction motors demanding fast switching, this can lead to increased switching loss and MOSFET overheating. To mitigate, select low-Qg MOSFETs (e.g., Infineon IPA60R125CP or ON Semi NTBLS1R7N08C), and consider adding discrete gate drivers between MC33937APEK and MOSFETs if rise/fall times exceed design targets. Monitor die temperature during dynamic loads.
Is the MC33937APEK suitable for sensorless BLDC commutation, and what are the design-in challenges with rotor position detection?
The MC33937APEK does not include built-in sensorless commutation logic; it only manages commutation sequencing via SPI commands from a host microcontroller. So, sensorless operation is possible but requires the MCU to implement back-EMF sensing or observer algorithms. Design-in challenges include synchronizing SPI update rates with rotor speed—especially at startup, where no back-EMF exists. You must program open-loop ramp-up before transitioning to closed-loop. Also, ensure ADC sampling on motor phase voltages is tightly synchronized with MC33937APEK gate state changes. Avoid false triggering during PWM off-periods. Incorporate fault fallback modes in firmware to prevent stalling under variable loads.
Quality Assurance (QC)
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MC33937APEK CAD Models
NXP USA Inc. MC33937APEK PCB symbols & footprints
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