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Monolithic Power Systems Inc. MPQ6531GV-AEC1-Z
- Part No.:
- MPQ6531GV-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Gate Drivers
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
MPQ6531GV-AEC1-Z.pdf
- Description:
- IC GATE DRVR HIGH-SIDE 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,903
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Product details
Overview
MPQ6531GV-AEC1-Z from Monolithic Power Systems is a three-phase BLDC motor pre-driver IC designed to drive six external N-channel MOSFETs in half-bridge configurations across 5V–60V input rails. It integrates a regulated charge pump (VREG = 9.5–14V), bootstrap high-side drivers with trickle-charge support for 100% duty cycle, and AEC-Q100 Grade 1 qualification for automotive actuator control. Used in electric power steering, HVAC blower fans, and brake booster pumps.
For engineers reviewing the MPQ6531GV-AEC1-Z datasheet, MPQ6531GV-AEC1-Z pinout, MPQ6531GV-AEC1-Z application, or MPQ6531GV-AEC1-Z equivalent, key selection criteria include its 0.8A source / 1A sink gate drive strength, programmable dead-time via RDT, LSS-based over-current protection threshold (0.4–0.6V), thermal shutdown at 190°C, and fault reporting via open-drain nFAULT.
Technical Context
The MPQ6531GV-AEC1-Z implements independent high-side and low-side gate drive logic per phase, with input-controlled enable (HA/HB/HC and LA/LB/LC) and internal shoot-through prevention via adjustable dead-time circuitry. Its VDS-sensing short-circuit protection monitors MOSFET drain-source voltage against OC_REF, while LSS pin enables shunt-based over-current detection with 3µs deglitch timing.
Power management includes a regulated charge pump generating VREG (9.5–14V) for low-side drive, bootstrap capacitors charged during LS conduction, and an internal trickle-charge circuit sustaining high-side bias at 100% duty cycle. Sleep mode (nSLEEP) reduces quiescent current to 1.4µA and initiates full power-up sequence on wake-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 60V - supports 12V/24V/48V automotive and industrial bus systems without external regulators. |
| VREG Output Voltage | 9.5V to 14V - stable gate drive supply enabling robust N-MOSFET turn-on even at VIN = 5V. |
| Gate Drive Strength | 0.8A source / 1A sink - sufficient for fast switching of typical 60V-rated power MOSFETs (QG ≤ 50nC). |
| LSS OCP Threshold | 0.4V to 0.6V - sets over-current limit via external shunt resistor; e.g., 5mΩ yields 100A trip point. |
| Dead-Time Adjustment | 90ns to 5.7µs via RDT - prevents shoot-through across all three phases using single resistor (10kΩ–100kΩ). |
| Thermal Shutdown | 190°C junction temperature - latches off outputs until thermal recovery, protecting MOSFET stage during overload. |
| Fault Reporting | Open-drain nFAULT - active-low signal indicating UVLO, OCP, short-circuit, or thermal fault; requires external pull-up. |
Pinout & Package
MPQ6531GV-AEC1-Z is housed in a thermally enhanced QFN-28 package (4mm × 5mm) with exposed thermal pad for PCB heat dissipation. Pin numbering follows standard top-view layout with GND (Pin 28) and VIN (Pin 1) positioned for optimal power routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Main power input | Bypassed with ≥0.1µF ceramic capacitor; supports 5–60V rail with transient tolerance up to 62V. |
| 5 BSTA / 9 BSTB / 13 BSTC | Bootstrap supply nodes | Connect to respective SHA/SHB/SHC via 0.1–1µF X7R ceramic capacitors; sustain HS gate voltage during 100% duty cycle. |
| 6 SHA / 10 SHB / 14 SHC | High-side source connections | Return path for HS gate drive current; tied to MOSFET source terminals in each half-bridge leg. |
| 7 GHA / 11 GHB / 15 GHC | High-side gate drive outputs | Drive N-MOSFET gates with 0.8A peak source current; require external gate resistors for dV/dt control. |
| 8 GLA / 12 GLB / 16 GLC | Low-side gate drive outputs | Sink 1A peak current to turn on LS MOSFETs; internally pulled down when inactive. |
| 17 LSS | Current sense input | Monitors low-side shunt voltage; trip threshold 0.4–0.6V; disables all outputs on OCP event. |
| 18–23 HA, HB, HC, LA, LB, LC | Phase control inputs | CMOS-compatible logic inputs (VIH = 2V, VIL = 0.8V); each controls corresponding HS/LS driver independently. |
| 24 nFAULT | Fault indicator output | Open-drain signal pulled low during UVLO, OCP, short-circuit, or thermal fault; requires external pull-up. |
| 25 nSLEEP | Power-down control | Logic-low entry into 1.4µA sleep mode; internal pull-down ensures safe default state. |
| 26 OC_REF | OCP reference voltage | Set VDS-sensing threshold; 0.125–2.4V range enables scalable short-circuit detection across MOSFET RDS(ON). |
| 27 DT | Dead-time programming | Resistor-to-ground sets dead time (90ns–5.7µs); eliminates shoot-through risk in all three phases simultaneously. |
Key Features
| Feature | Design Value |
|---|---|
| Charge pump + bootstrap architecture | Enables full 60V operation with 100% duty cycle capability-no external high-voltage bias required. |
| Programmable short-circuit protection | VDS monitoring via OC_REF allows precise MOSFET RDS(ON)-based fault detection without added sensing components. |
| Adjustable dead-time control | Single RDT resistor configures identical dead time across all three phases-reduces layout complexity and timing skew. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation with full parametric performance-suitable for engine bay and transmission applications. |
| Integrated trickle-charge circuit | Maintains bootstrap capacitor charge during sustained high-side conduction-eliminates need for external charge pumps or diodes. |
Applications
| Electric Power Steering (EPS) | HVAC Blower Fan Control |
|---|---|
|
Use Scenario: Precise torque-assist motor control in rack-and-pinion EPS systems under varying battery voltage (9–16V) and load conditions. IC Role / Device Role / Timing Role: Pre-driver managing six external 60V N-MOSFETs; provides synchronized gate timing with <1µs dead-time adjustment to prevent shoot-through during rapid direction reversal. Use Value: Enables compact, efficient 3-phase inverter design with integrated fault reporting (nFAULT) for ASIL-B functional safety compliance. |
Use Scenario: Variable-speed cabin air circulation in automotive HVAC systems operating from 12V battery with PWM frequencies up to 30kHz. IC Role / Device Role / Timing Role: Gate driver delivering 0.8A/1A peak current to drive low-RDS(ON) MOSFETs; supports smooth speed ramping via HA/HB/HC and LA/LB/LC logic sequencing. Use Value: Reduces EMI through adjustable dead-time and eliminates external gate bias supplies-cutting BOM count by ≥3 components. |
| Brake Booster Actuator | Seat Position Motor Control |
|
Use Scenario: High-reliability vacuum pump motor control in electro-hydraulic brake boosters requiring fail-safe shutdown on over-current or thermal events. IC Role / Device Role / Timing Role: Fault-tolerant pre-driver with dual protection: LSS-based OCP (0.5V threshold) and VDS-sensing short-circuit detection (OC_REF referenced). Use Value: Provides latched-off fault state with nFAULT indication-enabling diagnostic logging and controlled system reset via nSLEEP. |
Use Scenario: Quiet, responsive seat adjustment motors in premium vehicles powered from 12V/24V rails with intermittent duty cycles. IC Role / Device Role / Timing Role: Low-quiescent pre-driver (1.4µA sleep current) enabling always-on CAN bus wake-up; supports bidirectional rotation via phase input logic. Use Value: Extends battery life in parked vehicle scenarios while maintaining fast wake-up (<1ms) and deterministic gate drive timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase BLDC pre-driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8305PWP | Integrated current sense amplifiers; no external LSS shunt required; lower max VIN (45V). | Better suited for space-constrained designs needing analog current feedback; less suitable for 48V+ systems. | Select if closed-loop current control is required and 45V max input suffices. |
| STSPIN32F0A | Embedded 32-bit ARM Cortex-M0 MCU; integrates FOC firmware; higher integration but fixed architecture. | Reduces external controller dependency; not ideal for custom motor algorithms or non-FOC commutation schemes. | Select if sensorless FOC implementation and MCU co-location are prioritized over flexibility. |
Compared with MPQ6531GV-AEC1-Z, DRV8305PWP trades external shunt simplicity for built-in current sensing and lower voltage rating, while STSPIN32F0A replaces discrete control logic with embedded firmware-making MPQ6531GV-AEC1-Z optimal for flexible, high-voltage, externally controlled BLDC systems.
Availability
MPQ6531GV-AEC1-Z is available at Aetrix Electronics and suitable for electric power steering, HVAC blower fan control, and brake booster actuator applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for MPQ6531GV-AEC1-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with core expertise in DC/DC converters, motor drivers, and LED controllers.
The MPQ6531 product line delivers AEC-Q100 qualified three-phase BLDC pre-drivers targeting automotive electrification subsystems where reliability, wide input range, and integrated protection are critical.
FAQ
What is the maximum continuous input voltage the MPQ6531GV-AEC1-Z can withstand?
The absolute maximum VIN rating is 62V, but recommended operating range is strictly +5V to +60V. Transient excursions beyond 60V-even briefly-risk permanent damage and violate AEC-Q100 stress limits. External TVS clamping is advised in regenerative braking or load-dump scenarios.
How does the trickle-charge circuit enable 100% duty cycle operation?
The internal trickle-charge pump supplies ~5µA to each bootstrap node (BSTA/BSTB/BSTC) during sustained high-side conduction, compensating for leakage losses in the bootstrap capacitor and MOSFET body diode. This maintains sufficient gate-source voltage (>8V) without requiring alternating low-side conduction.
Can the MPQ6531GV-AEC1-Z drive P-channel high-side MOSFETs?
No-it is designed exclusively for N-channel high-side and low-side MOSFETs. The bootstrap architecture and gate drive outputs (GHA/GHB/GHC and GLA/GLB/GLC) assume N-MOSFET configuration with source-connected switching nodes (SHA/SHB/SHC and LSS).
What is the purpose of the OC_REF pin, and how is it configured for short-circuit protection?
OC_REF sets the VDS threshold for short-circuit detection: when the sensed MOSFET VDS exceeds OC_REF voltage, the device triggers immediate shutdown. It accepts 0.125–2.4V; typical use ties it to a precision voltage divider from VREG to configure trip point based on MOSFET RDS(ON) and expected fault current.
Does the MPQ6531GV-AEC1-Z support sensorless commutation?
The IC itself does not implement commutation logic-it is a gate driver only. Sensorless operation requires external microcontroller or dedicated motor controller (e.g., supplying HA/HB/HC and LA/LB/LC signals based on BEMF zero-crossing detection).
How is thermal performance affected by the exposed pad in the QFN-28 package?
The exposed thermal pad (connected to GND) reduces θJA to 40°C/W on a 4-layer PCB. Soldering the pad with ≥6 thermal vias to inner ground planes is mandatory to achieve rated 3.1W power dissipation and prevent thermal shutdown at TJ > 150°C.
Is there a minimum bootstrap capacitor value required for reliable operation?
Yes-bootstrap capacitance must exceed 8×QG (nF), where QG is the MOSFET's total gate charge in nC. For a 30nC MOSFET, minimum CBOOT = 240nF. Values below 0.1µF risk insufficient charge retention; above 1µF may cause startup instability due to slow charging.
MPQ6531GV-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- High-Side
- Channel Type:
- 3-Phase
- Number of Drivers:
- 6
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 5V ~ 60V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- 800mA, 1A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 1.4 V
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (4x5)
MPQ6531GV-AEC1-Z FAQ
1.How can I place an order for MPQ6531GV-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ6531GV-AEC1-Z 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 MPQ6531GV-AEC1-Z reliable?
The price and inventory of MPQ6531GV-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ6531GV-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ6531GV-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ6531GV-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ6531GV-AEC1-Z?
MPQ6531GV-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ6531GV-AEC1-Z 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 MPQ6531GV-AEC1-Z?
For technical support, including MPQ6531GV-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ6531GV-AEC1-Z requirements.
6.How does Aetrix verify that MPQ6531GV-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ6531GV-AEC1-Z 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 MPQ6531GV-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ6531GV-AEC1-Z?
All MPQ6531GV-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ6531GV-AEC1-Z, 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 MPQ6531GV-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ6531GV-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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