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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Monolithic Power Systems Inc. MP6529GR-Z

Name: MP6529GR-Z
Brand: Monolithic Power Systems Inc.
SKU: MP6529GR-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP6529GR-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Motor Drivers, Controllers

Package:: 28-VFQFN Exposed Pad

Datasheet:: MP6529GR-Z.pdf

Description:: 5V TO 35V, THREE-PHASE, BRUSHLES

Quantity:: RFQ Add To RFQ list

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Inventory:2,714

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Product details

Overview

MP6529GR-Z from Monolithic Power Systems is a three-phase BLDC motor pre-driver IC that controls six N-channel MOSFETs in half-bridge configurations, supports 5V–35V input voltage, delivers 0.8A source / 1A sink gate drive, and integrates programmable over-current protection with 0.5V LSS threshold for power drills and e-bike motor control.

For engineers reviewing the MP6529GR-Z datasheet, MP6529GR-Z pinout, MP6529GR-Z application, or MP6529GR-Z equivalent, key selection criteria include bootstrap-based high-side drive with trickle-charge for 100% duty cycle, adjustable dead time via external resistor (0.74µs to 6µs), thermal shutdown at 150°C, and open-drain fault reporting with latched OCP behavior requiring nSLEEP or UVLO reset.

Technical Context

The MP6529GR-Z implements V_DS-based over-current sensing referenced to OC_REF (0.125V–2.4V) and LSS (0.5V threshold), with 3µs deglitch timing to suppress switching transients. Its charge pump operates at 110kHz and generates BSTA/B/C voltages up to 55V for high-side gate drive.

It uses independent ENA/ENB/ENC enables per phase, supports PWM inputs (PWMA/B/C), and features an internal 880kΩ pull-down on nSLEEP. Fault detection triggers latched nFAULT low, requiring either nSLEEP toggle or VIN UVLO recovery to reset.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	5V to 35V - powers gate drivers directly from battery or DC bus without external regulator
Gate Drive Current	0.8A source / 1A sink - drives high-capacitance MOSFET gates with fast turn-on/turn-off
OCP Threshold	0.5V on LSS pin - detects over-current via low-side shunt voltage, enabling R_DS(on)-based protection
Dead Time Range	30ns to 6µs - set by external R_DT (0–200kΩ), prevents shoot-through across all three phases
Sleep Current	1µA - enables ultra-low-power standby in battery-powered tools and portable devices
Thermal Shutdown	150°C junction temperature - latches off outputs and asserts nFAULT until reset
UVLO Threshold	3.3V to 4.5V rising - disables all logic and gate drive during brown-out conditions

Pinout & Package

MP6529GR-Z is housed in a thermally enhanced 28-pin QFN package (4mm × 4mm) with exposed thermal pad, optimized for compact motor control PCBs and high-power density layouts.

Pin/Terminal	Circuit Role	Design Meaning
VIN (Pin 1)	Power input	Primary supply rail for internal regulators and gate drivers; accepts 5V–35V
BSTA/BSTB/BSTC (Pins 5,9,13)	Bootstrap outputs	Drive high-side gate via external bootstrap capacitors; support 100% duty cycle via trickle-charge
GHA/GHB/GHC (Pins 7,11,15)	High-side gate drivers	Source/sink current to N-MOSFET gates; each rated for 0.8A/1A
GLA/GLB/GLC (Pins 8,12,16)	Low-side gate drivers	Directly drive low-side N-MOSFET gates; include passive pull-down (590kΩ)
LSS (Pin 17)	Current sense node	Monitors low-side source voltage for V_DS-based OCP; threshold = 0.5V
nFAULT (Pin 24)	Fault indicator	Open-drain output pulled low during OCP, OTP, or UVLO faults; requires external pull-up
nSLEEP (Pin 25)	Power mode control	Logic-low entry into 1µA sleep mode; internal 880kΩ pull-down; 1ms wake-up delay required
OC_REF (Pin 26)	OCP reference input	Analog input setting V_DS trip point (0.125V–2.4V); enables precise current-limit tuning

Key Features

Feature	Design Value
Bootstrap trickle-charge circuit	Maintains high-side gate voltage at 100% duty cycle without external charge pump IC
Programmable over-current protection	Two-path sensing: LSS voltage (0.5V fixed) + OC_REF analog reference (0.125V–2.4V)
Adjustable dead-time control	Single R_DT resistor sets identical dead time across all three phases (30ns–6µs)
Thermally enhanced QFN package	4mm×4mm footprint with exposed pad; θ_JA = 42°C/W on 4-layer PCB
Open-drain fault reporting	nFAULT asserts low during OCP, thermal shutdown, or UVLO; latched until nSLEEP or VIN reset

Applications

Power Drills

Impact Drivers

Use Scenario: Cordless drill with variable-speed trigger and electronic braking.

IC Role / Device Role / Timing Role: Pre-driver controlling six external N-MOSFETs in three-phase inverter stage; manages PWM timing, dead time, and current limiting during stall and acceleration.

Use Value: Enables compact, high-efficiency motor control with integrated OCP and thermal protection-reducing need for discrete protection circuitry and improving tool runtime reliability.

Use Scenario: High-torque impact driver requiring rapid direction reversal and torque limiting.

IC Role / Device Role / Timing Role: Gate driver managing bidirectional three-phase commutation; uses ENA/ENB/ENC for per-phase enable/disable and nSLEEP for idle-state power reduction.

Use Value: Delivers 1A sink current for fast low-side turn-off during high-frequency impacts, while LSS-based OCP prevents MOSFET failure during jam events.

E-Bikes

E-Cigars

Use Scenario: Mid-drive e-bike controller with pedal-assist and regenerative braking support.

IC Role / Device Role / Timing Role: BLDC pre-driver interfacing with MCU-generated PWM signals; handles bootstrap voltage generation and fault signaling to main controller via nFAULT.

Use Value: Supports wide 5V–35V input range matching 12V–36V battery packs; 1µA sleep current extends standby time between rides.

Use Scenario: Compact vaporizer with brushless fan motor for airflow control and temperature regulation.

IC Role / Device Role / Timing Role: Low-voltage (5V–12V) motor driver enabling quiet, responsive fan speed modulation using PWMA/B/C inputs.

Use Value: QFN-28 package fits space-constrained PCBs; integrated UVLO and thermal shutdown prevent overheating in sealed enclosures.

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
DRV8305DRTT	Integrated current-sense amplifiers and SPI interface; no external OC_REF tuning; higher quiescent current (5mA)	Requires MCU with SPI support; better suited for closed-loop torque control than simple OCP	Select when digital configuration and real-time diagnostics outweigh analog simplicity and lower IQ
STSPIN32F0A	Embedded 32-bit ARM Cortex-M0 MCU + gate driver; includes hardware commutation engine and ADC	Reduces external MCU dependency; targets cost-sensitive, self-contained motor modules	Select when firmware-defined commutation, sensorless startup, or integrated control logic is required

Compared with DRV8305DRTT and STSPIN32F0A, MP6529GR-Z offers minimal external component count, lowest sleep current (1µA), and direct analog OCP tuning-making it optimal for battery-powered tools where analog simplicity, thermal robustness, and long standby life are prioritized over digital configurability or embedded processing.

Availability

MP6529GR-Z is available at Aetrix Electronics and suitable for power drills, impact drivers, and e-bike motor controllers requiring stable component supply, consistent thermal performance, and long-term industrial availability.

Supply support for MP6529GR-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 analog and power ICs, with design centers in the US, China, and Taiwan.

The MP6529 belongs to MPS's motor driver pre-driver product line, engineered specifically for compact, high-efficiency three-phase BLDC systems in portable power tools and personal mobility devices.

FAQ

What is the function of the DT pin on MP6529GR-Z?

The DT pin sets dead time across all three phases using an external resistor to GND. With R_DT = 200kΩ, dead time is 0.74µs; leaving DT open yields 6µs; tying DT to GND forces minimum 30ns. This single-point adjustment ensures shoot-through prevention without per-phase tuning.

How does MP6529GR-Z handle over-current events?

MP6529GR-Z triggers latched OCP when LSS voltage exceeds 0.5V or OC_REF threshold is breached. It disables all gate outputs and pulls nFAULT low. Recovery requires toggling nSLEEP or cycling VIN through UVLO-no automatic retry or timeout reset is implemented.

Can MP6529GR-Z drive 40V MOSFETs?

No. While BSTA/BSTB/BSTC pins tolerate up to 55V, the absolute maximum VIN is 40V, and recommended operating VIN is 5V–35V. Driving 40V-rated MOSFETs is acceptable only if bus voltage stays within 35V continuous and 40V transient limits per datasheet ratings.

Is there a difference between MP6529GR-Z and MP6529GF-Z?

Yes: MP6529GR-Z uses a 4mm×4mm QFN-28 package with exposed thermal pad (θ_JA = 42°C/W); MP6529GF-Z uses a larger 9.7mm×6.4mm TSSOP-28 EP package (θ_JA = 32°C/W). Both share identical electrical specs and pinout mapping but differ in thermal performance and board space requirements.

Does MP6529GR-Z require external bootstrap diodes?

No. The device integrates bootstrap diodes with forward voltage of 0.9V at 10mA (1.3V at 100mA). External diodes are unnecessary unless higher current capability or reverse leakage performance is needed beyond internal diode specs.

What is the wake-up time from nSLEEP mode?

The MP6529GR-Z requires 1ms after nSLEEP transitions high before accepting valid PWM commands. During this period, internal regulators and charge pumps stabilize; issuing PWM earlier may result in incomplete gate drive or erratic switching.

MP6529GR-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

Motor Type - Stepper:: -

Motor Type - AC, DC:: -

Function:: -

Output Configuration:: -

Interface:: -

Technology:: -

Step Resolution:: -

Applications:: -

Current - Output:: -

Voltage - Supply:: -

Voltage - Load:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-QFN (4x4)

MP6529GR-Z FAQ

1.How can I place an order for MP6529GR-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP6529GR-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 MP6529GR-Z reliable?

The price and inventory of MP6529GR-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6529GR-Z is usually 5 days.

3.What payment methods are accepted for MP6529GR-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6529GR-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP6529GR-Z?

MP6529GR-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP6529GR-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 MP6529GR-Z?

For technical support, including MP6529GR-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6529GR-Z requirements.

6.How does Aetrix verify that MP6529GR-Z is sourced from the original manufacturer or authorized distributors?

All MP6529GR-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 MP6529GR-Z meets industry standards.

7.What is the process for return or replacement of MP6529GR-Z?

All MP6529GR-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP6529GR-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 MP6529GR-Z part is unused and in its original packaging.

Return procedure for MP6529GR-Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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