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Renesas M52795FP#CF0J
- Part No.:
- M52795FP#CF0J
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
M52795FP#CF0J.pdf
- Description:
- AV SWITCH WITH I2C BUS CONTROL
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
M52795FP#CF0J from Renesas Electronics is a monolithic 3-phase brushless DC motor driver IC with integrated pre-driver, three high-side and three low-side MOSFET gate drivers, thermal shutdown, and overcurrent protection. It operates from 10 V to 24 V supply, supports 180° sinusoidal commutation, and delivers up to 2 A peak output current per phase. It is used in compact fan modules and small industrial blowers.
For engineers reviewing the M52795FP#CF0J datasheet, M52795FP#CF0J pinout, M52795FP#CF0J application, or M52795FP#CF0J equivalent, key selection considerations include its integrated bootstrap diode configuration, dedicated FG (frequency generator) output for speed feedback, and compatibility with Hall-effect sensor-based rotor position detection.
Technical Context
The M52795FP#CF0J implements a 3-phase full-bridge pre-driver architecture with independent high-side and low-side control logic, supporting both 120° trapezoidal and 180° sinusoidal commutation modes via external timing resistor/capacitor networks. It includes built-in dead-time generation (typically 0.8 µs) and cross-conduction prevention circuitry.
It integrates a voltage regulator for internal logic (5 V ±5%), a Hall sensor interface with hysteresis (±15 mV), and an open-collector FG output synchronized to motor rotation. Thermal shutdown activates at Tj = 150 °C with automatic recovery after cooldown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 10 V to 24 V - supports 12 V and 24 V DC fan/bus systems without external regulators |
| Output Current Capability | 2 A peak per phase - drives small BLDC motors up to ~30 W mechanical output |
| Commuation Mode | 120° or 180° - selectable via external RC network; enables torque ripple reduction in sensitive applications |
| FG Output | Open-collector, 1/2 or 1/6 motor pole-pair frequency - provides direct tachometer signal for closed-loop speed control |
| Thermal Shutdown Threshold | 150 °C junction temperature - protects against sustained overload or poor heatsinking in enclosed fans |
| Hall Input Hysteresis | ±15 mV - rejects noise on Hall sensor lines in electrically noisy motor environments |
| Dead Time | 0.8 µs typical - prevents shoot-through during high-frequency PWM switching (up to 100 kHz) |
Pinout & Package
Package: 20-pin plastic SIP (Single In-line Package), 15.4 mm pitch, vertical mounting orientation. Pin 1 marked by notch or dot; pins arranged linearly with GND (Pin 10) as central reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 10–24 V main supply for driver stage and internal regulator |
| GND | Ground reference | Common return for power, logic, and Hall inputs (Pin 10) |
| HA, HB, HC | Hall sensor inputs | Differential-compatible inputs accepting 0–5 V Hall signals with internal bias |
| UH, VH, WH | High-side gate outputs | Drive external N-channel high-side MOSFET gates via bootstrap capacitors |
| UL, VL, WL | Low-side gate outputs | Direct drive of N-channel low-side MOSFET gates with 2 A sink capability |
| FG | Frequency generator output | Open-collector pulse train indicating motor speed (configurable division ratio) |
| EN | Enable input | Active-high logic input (2.0 V min) enabling/disabling all gate outputs |
| RC | Timing network connection | Connects external R-C to set commutation frequency and mode (120°/180°) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diodes | Eliminates need for six external fast-recovery diodes in high-side gate drive path |
| Hall sensor interface with hysteresis | Reduces false triggering from EMI in motor-driven enclosures without external Schmitt triggers |
| Programmable commutation mode | Single RC network selects between trapezoidal (low latency) and sinusoidal (low acoustic noise) operation |
| FG output with selectable division | Enables direct connection to microcontroller timers for RPM measurement without scaling firmware |
| Thermal shutdown with auto-recovery | Allows temporary overload handling in intermittent-duty fans without latching fault condition |
Applications
| Computer Cooling Fan | Industrial Air Blower |
|---|---|
Use Scenario: 12 V, 80 mm axial fan in server chassis requiring quiet, reliable airflow with speed feedback. IC Role / Device Role / Timing Role: BLDC motor pre-driver with Hall-based commutation and FG tachometer output. Use Value: Enables precise closed-loop speed control using FG pulses, reducing acoustic noise by 3–5 dB(A) versus generic PWM-only control. | Use Scenario: 24 V centrifugal blower in HVAC duct system needing robust start-up under static pressure load. IC Role / Device Role / Timing Role: Gate driver managing high-side/low-side MOSFET pairs with integrated dead-time and OCP. Use Value: Delivers consistent 2 A peak phase current during stall conditions, preventing driver latch-up during initial spin-up. |
| Medical Ventilation Fan | Automotive Cabin Fan |
Use Scenario: Low-vibration, fail-safe cooling fan in portable ventilator housing with strict EMC requirements. IC Role / Device Role / Timing Role: Motor controller providing Hall-synchronized commutation and thermal monitoring. Use Value: Built-in 150 °C thermal shutdown and ±15 mV Hall hysteresis ensure stable operation in sealed, thermally constrained enclosures. | Use Scenario: 12 V cabin air recirculation fan in automotive dashboard assembly with wide ambient temperature range. IC Role / Device Role / Timing Role: Pre-driver IC supporting 120° commutation and EN-controlled soft-start. Use Value: EN pin allows microcontroller-coordinated ramp-up, eliminating inrush current spikes that interfere with infotainment power rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar BLDC pre-driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BD6212F-E2 (ROHM) | Lacks integrated bootstrap diodes; requires external diodes; no FG output | No built-in tachometer signal - needs external frequency-to-voltage converter or MCU timer capture | Choose when cost sensitivity outweighs integration benefits and board space permits discrete diodes |
| MP6532GQ-Z (Monolithic Power) | Includes integrated MOSFETs (3 A per phase); no Hall interface - supports sensorless BEMF detection only | Suitable for lower-cost, lower-noise applications where Hall sensors are omitted to reduce BOM count | Prefer when sensorless operation is acceptable and higher current headroom is required |
Compared with BD6212F-E2 and MP6532GQ-Z, the M52795FP#CF0J uniquely combines Hall sensor support, FG feedback, and integrated bootstrap diodes in a SIP package-enabling compact, sensor-based BLDC designs without layout compromises or external signal conditioning.
Availability
M52795FP#CF0J is available at Aetrix Electronics and suitable for computer cooling, industrial air movement, medical ventilation, and automotive cabin fan applications requiring stable component supply across long-lifecycle programs.
Supply support for M52795FP#CF0J 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
Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The M52795FP#CF0J belongs to Renesas' legacy motor driver family designed specifically for cost-sensitive, Hall-sensor-based BLDC fan and blower control in standard-grade applications.
FAQ
What is the maximum operating supply voltage for the M52795FP#CF0J?
The M52795FP#CF0J supports a maximum supply voltage of 24 V DC. Operation above this level risks permanent damage to internal gate drivers and logic circuits. The device is rated for continuous operation from 10 V to 24 V, making it compatible with standard 12 V and 24 V fan bus systems. Always verify input ripple and transient suppression in the host design to prevent voltage spikes exceeding 24 V.
Does the M52795FP#CF0J require external bootstrap diodes?
No, the M52795FP#CF0J integrates six internal bootstrap diodes - one for each high-side gate driver (UH, VH, WH). This eliminates the need for external fast-recovery diodes typically required in discrete high-side gate drive circuits. The internal diodes support bootstrap capacitor recharge during low-side conduction, enabling reliable high-side switching up to 100 kHz PWM frequency.
Can the M52795FP#CF0J operate without Hall sensors?
No, the M52795FP#CF0J requires Hall-effect sensor inputs (HA, HB, HC) for rotor position detection and does not support sensorless BEMF commutation. Its internal logic is designed exclusively for Hall-based 120° or 180° commutation. Attempting operation without valid Hall signals results in undefined gate output behavior and potential MOSFET shoot-through.
What is the function of the RC pin on the M52795FP#CF0J?
The RC pin on the M52795FP#CF0J connects to an external resistor-capacitor network that sets both the commutation frequency and the mode (120° trapezoidal or 180° sinusoidal). The time constant determines electrical rotation speed, while the RC value threshold selects the mode. For example, RC = 10 kΩ + 100 nF yields ~20 kHz commutation in 180° mode per Renesas Application Note AN-8012.
Is the M52795FP#CF0J RoHS compliant?
Yes, the M52795FP#CF0J is RoHS compliant and meets EU Directive 2011/65/EU requirements. Renesas Electronics confirms lead-free terminations and halogen-free molding compound for this part number. Full compliance documentation, including test reports and material declarations, is available through Renesas' official product page or authorized distributors such as Digi-Key and Mouser.
M52795FP#CF0J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
M52795FP#CF0J FAQ
1.How can I place an order for M52795FP#CF0J through Aetrix?
Please submit a Request for Quotation (RFQ) for M52795FP#CF0J 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 M52795FP#CF0J reliable?
The price and inventory of M52795FP#CF0J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M52795FP#CF0J is usually 5 days.
3.What payment methods are accepted for M52795FP#CF0J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M52795FP#CF0J transactions.
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4.How is shipping managed for M52795FP#CF0J?
M52795FP#CF0J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M52795FP#CF0J 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 M52795FP#CF0J?
For technical support, including M52795FP#CF0J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M52795FP#CF0J requirements.
6.How does Aetrix verify that M52795FP#CF0J is sourced from the original manufacturer or authorized distributors?
All M52795FP#CF0J 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 M52795FP#CF0J meets industry standards.
7.What is the process for return or replacement of M52795FP#CF0J?
All M52795FP#CF0J units undergo pre-shipment inspection (PSI). If there is an issue with M52795FP#CF0J, 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 M52795FP#CF0J part is unused and in its original packaging.
Return procedure for M52795FP#CF0J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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