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NXP Semiconductors MCZ33937AEKR2
- Part No.:
- MCZ33937AEKR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Motor Drivers, Controllers
- Package:
- 54-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33937AEKR2.pdf
- Description:
- IC MOTOR DRIVER 6V-58V 54SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,078
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Product details
Overview
MCZ33937AEKR2 from NXP Semiconductors is a three-phase FET pre-driver IC designed for automotive motor control, integrating six gate drivers (three high-side and three low-side), SPI configuration, overcurrent protection, and 15 V regulated VLS supply. It operates from 6.0 V to 58 V input, delivers up to 2.5 A peak gate drive current per channel, and is AEC-Q100 Grade 1 qualified for under-hood applications such as electric power steering and cooling fans.
For engineers reviewing the MCZ33937AEKR2 datasheet, MCZ33937AEKR2 pinout, MCZ33937AEKR2 application, or MCZ33937AEKR2 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating parameters (6–58 V supply, 15 V VLS, 2.5 A drive), and real-world use cases in electro-hydraulic power steering and belt starter generators - all derived from NXP's official Rev. 14 product data sheet.
Technical Context
The MCZ33937AEKR2 implements independent high- and low-side gate drivers per phase with bootstrap-based high-side biasing, programmable dead time via SPI, and integrated current-sensing amplifier (AMP_P/AMP_N → AMP_OUT) feeding an overcurrent comparator (OC_TH threshold setting). Its SMARTMOS process enables robust operation across 6–58 V VPWR while maintaining 15 V VLS regulation for gate drive stability.
It features dual enable inputs (EN1/EN2 AND-logic), asynchronous reset (RST), interrupt output (INT), and fault masking via SPI registers MASK0/MASK1. Phase comparators (PHASEA/B/C) monitor high-side source voltage relative to VSUP, asserting low when below 50 % VSUP - enabling direct feedback for desaturation detection in external FETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 6.0 V to 58 V VPWR - supports 12 V and 42 V automotive systems including load-dump transients up to 80 V. |
| Gate Drive Current | 1.0 A to 2.5 A peak per driver - sufficient to charge >400 nC gate capacitance of low-RDS(on) MOSFETs in motor phases. |
| VLS Regulator Output | 15 V ±1.5 V at up to 600 mA peak - powers all low-side drivers and serves as bootstrap reference for high-side drivers. |
| SPI Interface Speed | Up to 5.0 MHz SCLK - enables real-time configuration of dead time, fault masking, and initialization sequencing. |
| Operating Junction Temp | –40 °C to +150 °C - meets AEC-Q100 Grade 1 requirements for under-hood automotive deployment. |
| Overcurrent Detection | Programmable threshold via OC_TH pin - analog input sets trip point for AMP_OUT-based current sensing. |
| Logic Compatibility | Accepts both 3.0 V and 5.0 V logic inputs; outputs 5.0 V logic levels - interoperable with common MCU I/O without level-shifting. |
Pinout & Package
MCZ33937AEKR2 is housed in an HSOP54 package (SOT1747-4): plastic thermal-enhanced small outline, 54 terminals, 0.65 mm pitch, 7.5 mm × 17.9 mm × 2.33 mm body, with exposed pad (EP) recommended to be connected to VSS and system ground for thermal and ESD performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA_HS_G / PB_HS_G / PC_HS_G | High-side gate drive output | Low-impedance 15 V-referenced outputs driving external high-side FET gates; limited to ~15 V above respective HS source (PX_HS_S). |
| PA_LS_G / PB_LS_G / PC_LS_G | Low-side gate drive output | 15 V rail-referenced outputs capable of 2.5 A peak sink/source - directly drives low-side FET gates with fast edge rates. |
| PA_HS / PB_HS / PC_HS | Active-low high-side enable input | Asynchronous logic inputs pulled up internally; assertion disables corresponding high-side driver until bootstrap charging completes. |
| PA_LS / PB_LS / PC_LS | Active-high low-side enable input | Asynchronous logic inputs pulled down internally; used with EN1/EN2 to sequence gate activation and prevent shoot-through. |
| VLS, VLS_CAP | VLS regulator output & decoupling node | VLS = ~15 V regulated supply; VLS_CAP connects low-ESR capacitor to minimize impedance for pulsed gate currents. |
| AMP_P / AMP_N / AMP_OUT | Current-sense amplifier interface | Differential inputs sense shunt voltage; AMP_OUT feeds overcurrent comparator and can be monitored externally. |
| OC_TH | Overcurrent threshold input | Analog voltage setting determines trip point of internal overcurrent comparator - enables precise current-limit tuning. |
| CS / SI / SCLK / SO / INT | SPI interface & interrupt | Full-duplex 3–5 MHz SPI port with chip-select framing and interrupt flagging - supports dynamic reconfiguration and fault reporting. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable dead time | Configured via SPI register - prevents cross-conduction during phase switching without requiring external timing components. |
| Integrated current sensing | On-chip amplifier with differential inputs (AMP_P/AMP_N) and buffered output (AMP_OUT) - eliminates need for external op-amp in shunt-based current monitoring. |
| Bootstrap charge management | Internal trickle charge pump and hold-off circuit - ensures reliable high-side FET turn-on even at low duty cycles or startup. |
| AEC-Q100 Grade 1 qualification | Validated for –40 °C to +150 °C operation with full electrical specs over temperature - suitable for engine bay and transmission control modules. |
| Fault masking & interrupt control | SPI-accessible MASK0/MASK1 registers allow selective disabling of overcurrent, desaturation, or thermal faults - enables application-specific fault response. |
Applications
| Cooling Fan Control | Electric Power Steering (EPS) |
|---|---|
|
Use Scenario: Variable-speed 12 V/42 V brushless DC fan driven by three-phase inverter with torque ripple minimization. IC Role / Device Role / Timing Role: Pre-driver providing synchronized high/low-side gate signals, dead-time control, and phase voltage feedback (PHASEA/B/C) for commutation timing. Use Value: Enables precise PWM control of fan speed while detecting overcurrent events before MOSFET failure - critical for thermal management reliability. |
Use Scenario: Compact EPS module requiring high-efficiency motor drive with real-time current monitoring and fault response. IC Role / Device Role / Timing Role: Gate driver interfacing MCU to 60 V-rated external FETs; uses AMP_OUT and OC_TH for adaptive current limiting during assist torque peaks. Use Value: Delivers 2.5 A gate drive to rapidly switch low-RDS(on) FETs while maintaining <1 µs fault-to-interrupt latency - essential for functional safety compliance. |
| Belt Starter Generator (BSG) | Water Pump Actuation |
|
Use Scenario: 48 V mild-hybrid BSG system demanding high-voltage tolerance, transient immunity, and regenerative braking support. IC Role / Device Role / Timing Role: Pre-driver managing bidirectional energy flow via synchronous rectification control; leverages VSUP monitoring for desat detection during regeneration. Use Value: Withstands 80 V load-dump transients and operates stably from 6–58 V - ensures uninterrupted operation during battery voltage fluctuations in start-stop cycles. |
Use Scenario: Engine-cooling water pump using sensorless BLDC control with thermal derating based on current and junction temperature. IC Role / Device Role / Timing Role: Driver supplying gate signals and feeding back PHASEX outputs to MCU for back-EMF zero-crossing detection; VLS supplies consistent 15 V bias. Use Value: Integrated VLS regulator eliminates need for external 15 V supply - reduces BOM count and improves layout efficiency in space-constrained engine compartments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase FET pre-driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33937APEK | Same die, identical electrical specs, but in HSOP54 package with different suffix (no 'Z' or 'R2'); pinout and thermal pad layout match MCZ33937AEKR2. | No functional difference - intended for same automotive motor control applications; differs only in ordering code and tape/reel packaging. | Select MC33937APEK if standard NXP part numbering is required; MCZ33937AEKR2 is functionally identical and drop-in compatible. |
| MPQ6532-AEC1 | Monolithic 3-phase gate driver (not pre-driver); integrates bootstrap diodes and 12 V LDO, but lacks SPI configurability, current-sense amplifier, and PHASEX comparators. | Suitable for cost-sensitive, fixed-function BLDC drives where programmability and diagnostic depth are secondary to integration density. | Choose MPQ6532-AEC1 only if SPI configuration, overcurrent threshold tuning, and desaturation feedback are not required. |
Compared with MC33937APEK, MCZ33937AEKR2 offers identical functionality and pin compatibility, differing only in packaging designation; versus MPQ6532-AEC1, it provides deeper diagnostics, programmable protection, and external FET flexibility - making it preferable for safety-critical, field-upgradable automotive systems.
Availability
MCZ33937AEKR2 is available at Aetrix Electronics and suitable for automotive motor control, electric power steering, and cooling fan applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MCZ33937AEKR2 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The MCZ33937AEKR2 belongs to NXP's automotive pre-driver product line, engineered specifically for high-reliability three-phase motor control in demanding environments - emphasizing robust gate drive, integrated diagnostics, and AEC-Q100 Grade 1 qualification.
FAQ
What is the maximum allowable VPWR voltage for continuous operation of the MCZ33937AEKR2?
The MCZ33937AEKR2 supports continuous operation with VPWR from 6.0 V to 58 V. Transient survival extends to 80 V per ISO 7637 load-dump testing. Operation beyond 58 V requires verification of thermal limits and gate drive integrity - the device is not rated for sustained >58 V VPWR.
Does the MCZ33937AEKR2 integrate a current-sense amplifier, and how is it configured?
Yes, the MCZ33937AEKR2 integrates a dedicated current-sense amplifier with noninverting (AMP_P) and inverting (AMP_N) inputs and buffered output (AMP_OUT). It is configured externally via a shunt resistor; AMP_OUT feeds both the overcurrent comparator and optional MCU ADC - no external op-amp is needed for basic current monitoring.
How does the MCZ33937AEKR2 handle high-side gate drive without a floating supply?
The MCZ33937AEKR2 uses external bootstrap capacitors (PA_BOOT/PB_BOOT/PC_BOOT) charged via internal trickle pump and hold-off circuitry. Each high-side driver (PA_HS_G/PB_HS_G/PC_HS_G) references its respective source pin (PA_HS_S/etc.), enabling gate bias up to ~15 V above source - eliminating need for isolated supplies in typical BLDC inverters.
Can the MCZ33937AEKR2 be used in 48 V automotive systems?
Yes, the MCZ33937AEKR2 is fully specified from 6.0 V to 58 V VPWR and has been validated for 42 V and 48 V nominal systems. Its 80 V transient rating and AEC-Q100 Grade 1 qualification make it suitable for 48 V mild-hybrid applications including belt starter generators and active suspension pumps.
What is the purpose of the PHASEA, PHASEB, and PHASEC pins on the MCZ33937AEKR2?
The PHASEA, PHASEB, and PHASEC pins are totem-pole digital outputs reflecting the state of internal phase comparators. Each goes low when its corresponding high-side FET source voltage (e.g., PA_HS_S) falls below 50 % of VSUP - providing real-time desaturation feedback to the MCU for fault detection and commutation timing in sensorless BLDC control.
MCZ33937AEKR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 54-SSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 54-SOIC-EP
MCZ33937AEKR2 FAQ
1.How can I place an order for MCZ33937AEKR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33937AEKR2 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 MCZ33937AEKR2 reliable?
The price and inventory of MCZ33937AEKR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33937AEKR2 is usually 5 days.
3.What payment methods are accepted for MCZ33937AEKR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33937AEKR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33937AEKR2?
MCZ33937AEKR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33937AEKR2 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 MCZ33937AEKR2?
For technical support, including MCZ33937AEKR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33937AEKR2 requirements.
6.How does Aetrix verify that MCZ33937AEKR2 is sourced from the original manufacturer or authorized distributors?
All MCZ33937AEKR2 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 MCZ33937AEKR2 meets industry standards.
7.What is the process for return or replacement of MCZ33937AEKR2?
All MCZ33937AEKR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33937AEKR2, 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 MCZ33937AEKR2 part is unused and in its original packaging.
Return procedure for MCZ33937AEKR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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