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Monolithic Power Systems Inc. MP6529GF
- Part No.:
- MP6529GF
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Motor Drivers, Controllers
- Package:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MP6529GF.pdf
- Description:
- 5V TO 35V, THREE-PHASE, BRUSHLES
- Quantity:
- Payment:
- Shipping:
Inventory:2,148
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Product details
Overview
MP6529GF from Monolithic Power Systems is a three-phase brushless DC motor pre-driver IC designed to control six external N-channel MOSFETs in half-bridge configurations. It operates across 5V–35V input, delivers 0.8A source / 1A sink gate drive, supports 100% duty cycle via bootstrap + trickle-charge, and integrates programmable OCP, adjustable dead time (30ns–6µs), UVLO, and thermal shutdown. Used in cordless power tools like impact drivers and e-bikes.
For engineers reviewing the MP6529GF datasheet, MP6529GF pinout, MP6529GF application, or MP6529GF equivalent, key selection considerations include its TSSOP-28 EP package with exposed thermal pad, 1ms sleep wake-up latency, VDS-based over-current protection referenced to OC_REF, and phase-enable logic per ENA/ENB/ENC pins.
Technical Context
The MP6529GF implements a three-phase gate driver architecture with independent high-side (GHA/GHB/GHC) and low-side (GLA/GLB/GLC) outputs, each driven by internal logic responsive to PWM and enable inputs. Its bootstrap charge pump (CPA/CPB) sustains high-side gate voltage at full duty cycle, backed by an internal trickle-charge circuit that maintains BSTx voltage above 10V during sustained conduction.
OCP uses dual-sensing: primary VDS monitoring via OC_REF (0.125V–2.4V threshold range) and secondary LSS-source sensing (0.4–0.6V trip). Fault detection latches nFAULT low and disables all outputs until reset by nSLEEP toggle or VIN UVLO recovery. Dead time is resistor-programmable (RDT) from 30ns to 6µs, with internal default when DT is open.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 5V to 35V - powers gate drivers and internal regulators; supports 12V–36V battery systems directly. |
| Gate drive current | 0.8A source / 1A sink - drives large gate capacitance MOSFETs with fast turn-on/turn-off transitions. |
| OCP threshold range | OC_REF: 0.125V–2.4V - sets VDS-based current limit for external MOSFETs; LSS trip at 0.5V typical. |
| Dead time range | 30ns (DT=GND) to 6µs (DT=open) - prevents shoot-through; set by single RDT resistor (200kΩ → 0.74µs). |
| Sleep mode current | 1µA - enables ultra-low-power standby in battery-powered tools during idle periods. |
| Fault response | Latched nFAULT output - holds low until nSLEEP toggled or VIN recovers from UVLO; ensures safe shutdown. |
| Thermal protection | 150°C junction shutdown - halts operation before silicon damage; requires external reset to resume. |
Pinout & Package
MP6529GF is housed in a thermally enhanced TSSOP-28 EP package (9.7mm × 6.4mm) with exposed thermal pad for PCB heat dissipation. Continuous power dissipation is 3.9W at TA = +25°C (θJA = 32°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Main power input | Supplies internal regulator and charge pump; accepts 5V–35V with 40V abs max. |
| CPA/CPB (Pins 2–3) | Charge pump terminals | Connect external capacitors to generate high-side gate drive voltage; support 100% duty cycle. |
| VREG (Pin 4) | Regulated supply output | 10–12.8V output powering low-side drivers and logic; stable across full VIN range. |
| BSTA–BSTC (Pins 5,9,13) | Bootstrap outputs | Drive high-side gate via external bootstrap diodes/caps; each tied to respective SHA/SHB/SHC. |
| GHA–GHC (Pins 7,11,15) | High-side gate drivers | Source/sink 0.8A/1A to drive N-MOSFET gates; require bootstrap voltage ≥10V for full enhancement. |
| GLA–GLC (Pins 8,12,16) | Low-side gate drivers | Directly driven from VREG; sink-dominated with 1Ω–5.5Ω pull-down resistance for fast turn-off. |
| LSS (Pin 17) | Low-side source monitor | Current-sense node for secondary OCP; trips if voltage exceeds 0.5V (typical). |
| PWMA–PWMC (Pins 20–18) | PWM inputs | Accept standard 3.3V/5V logic; control phase A/B/C bridge switching timing independently. |
| ENA–ENC (Pins 23–21) | Phase enable inputs | Active-high logic; disable corresponding phase gate outputs when pulled low. |
| nSLEEP (Pin 25) | Sleep mode control | Logic low enters 1µA sleep; internal 880kΩ pulldown requires explicit high to operate. |
| nFAULT (Pin 24) | Fault indicator | Open-drain output; pulled low during OCP, OTP, or UVLO fault; requires external pull-up. |
| OC_REF (Pin 26) | OCP reference input | Analog input setting VDS-based current limit; 0.125V–2.4V range maps to MOSFET RDS-ON × IDS limit. |
| DT (Pin 27) | Dead time programming | Resistor-to-GND sets dead time (30ns–6µs); open = 6µs, 200kΩ = 0.74µs. |
| GND (Pin 28) | Power ground | Primary return path; connects to exposed thermal pad for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Bootstrap + trickle-charge | Maintains high-side gate voltage at 100% duty cycle without external charge-pump IC or complex layout. |
| Programmable VDS OCP | OC_REF input allows precise current-limit tuning across MOSFET RDS-ON variations and temperature drift. |
| Adjustable dead-time control | Single RDT resistor configures dead time per all three phases-eliminates need for discrete timing networks. |
| Integrated thermal shutdown | 150°C junction protection with latch-and-reset behavior prevents thermal runaway in stalled-motor conditions. |
| Low-power sleep mode | 1µA quiescent current enables multi-hour battery standby in portable tools without auxiliary power switches. |
Applications
| Power Drill Motor Control | Impact Driver Drive Stage |
|---|---|
|
Use Scenario: High-torque, variable-speed drilling in handheld cordless drills with Li-ion battery packs (18V–36V). IC Role / Device Role / Timing Role: Pre-driver controlling six external N-MOSFETs in three-phase inverter; manages PWM timing, dead time, and phase enable/disable sequencing. Use Value: Enables rapid acceleration/deceleration with shoot-through prevention and real-time over-current shutdown during bit binding. |
Use Scenario: High-impact rotational force generation in compact cordless impact drivers requiring burst torque and thermal resilience. IC Role / Device Role / Timing Role: Gate driver managing high-frequency PWM switching (≥20kHz) and synchronized phase commutation under transient load spikes. Use Value: Delivers 1A sink current for fast low-side turn-off and 0.8A source for robust high-side drive-reducing MOSFET switching losses during repetitive impacts. |
| E-Bike Mid-Drive Controller | Cordless Lawn Mower Motor Interface |
|
Use Scenario: Mid-mounted BLDC motor in electric bicycles operating from 36V or 48V battery systems with regenerative braking demands. IC Role / Device Role / Timing Role: Pre-driver interfacing MCU PWM outputs to external power stage; handles ENA/ENB/ENC logic for field-oriented control (FOC) phase enablement. Use Value: Supports 35V max VIN and integrated UVLO/OTP ensures reliable operation across wide battery voltage sag and ambient temperature ranges (−40°C to +125°C). |
Use Scenario: High-power BLDC motor in battery-powered robotic lawn mowers requiring continuous 30+ minute runtime and stall protection. IC Role / Device Role / Timing Role: Three-phase gate driver with latched fault reporting (nFAULT) and LSS-based OCP for immediate shutdown during blade obstruction. Use Value: Dual OCP sensing (OC_REF + LSS) provides redundant current limiting-critical for safety-critical outdoor power equipment compliance. |
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 |
|---|---|---|---|
| MP6530GF | Same pinout and package; adds integrated VDS sensing amplifier and configurable OCP latch/auto-retry modes. | Preferred where adaptive fault recovery (e.g., auto-restart after transient overload) is required. | Select MP6530GF if system-level fault management must avoid manual nSLEEP reset cycles. |
| Toshiba TB6605FTG | QFN-32 package; fixed 1.2µs dead time; no trickle-charge circuit-limits duty cycle to <95% without external boost. | Suitable for lower-cost, lower-duty-cycle applications where 100% conduction is not needed. | Choose TB6605FTG only when board space permits QFN-32 and bootstrap voltage margin is sufficient. |
Compared with MP6529GF, MP6530GF offers enhanced fault handling flexibility while maintaining pin compatibility, whereas TB6605FTG trades duty-cycle headroom and package size for cost reduction in less demanding motor control tasks.
Availability
MP6529GF is available at Aetrix Electronics and suitable for cordless power tools, e-bike motor controllers, and robotic lawn mower drive stages requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP6529GF 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 across Asia and North America.
The MP65xx series targets battery-powered three-phase BLDC motor control, emphasizing integration of gate drive, protection, and thermal management in compact surface-mount packages for portable and industrial motion systems.
FAQ
What is the maximum continuous input voltage for MP6529GF?
The absolute maximum input voltage (VIN) is 40V, but the recommended operating range is strictly 5V to 35V. Operation above 35V risks violating functional specifications and may trigger UVLO or cause premature stress on internal regulators and charge pump circuitry.
How does the trickle-charge circuit enable 100% duty cycle operation?
The trickle-charge circuit continuously replenishes charge on the bootstrap capacitor during high-side conduction, counteracting leakage and load current draw. This maintains BSTx voltage above the minimum required for high-side MOSFET enhancement-even when the low-side FET remains off indefinitely.
Can MP6529GF drive both N-channel and P-channel high-side MOSFETs?
No-MP6529GF is designed exclusively for N-channel high-side MOSFETs using bootstrap gate drive. It lacks the floating high-voltage level shifter required for P-channel high-side drive and does not support direct high-side source connection to bus voltage.
What happens during an over-current event detected at the LSS pin?
When LSS voltage exceeds 0.5V (typical), the device enters a latched fault state: all gate outputs disable, nFAULT pulls low, and operation remains suspended until nSLEEP is toggled or VIN drops below UVLO threshold and recovers.
Is the DT pin compatible with dynamic dead-time adjustment during runtime?
No-DT is a static configuration pin. Its resistor value sets a fixed dead time for all three phases at power-up. Dynamic adjustment requires external logic to switch resistor networks or use a DAC-controlled voltage-to-resistance converter, which is not supported by the IC's internal architecture.
Does MP6529GF require external bootstrap diodes?
Yes-external Schottky diodes (e.g., 1N5819) are mandatory between VREG and each BSTx pin to charge the bootstrap capacitors. The IC does not integrate these diodes; omission causes high-side gate drive failure and potential shoot-through.
What is the purpose of the internal 880kΩ pull-down on nSLEEP?
The internal pull-down ensures the device defaults to disabled (sleep) state at power-up unless actively driven high by the host controller. This prevents unintended motor activation during system initialization or MCU boot sequences.
MP6529GF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- *
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- 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-TSSOP-EP
MP6529GF FAQ
1.How can I place an order for MP6529GF through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6529GF 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 MP6529GF reliable?
The price and inventory of MP6529GF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6529GF is usually 5 days.
3.What payment methods are accepted for MP6529GF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6529GF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6529GF?
MP6529GF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6529GF 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 MP6529GF?
For technical support, including MP6529GF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6529GF requirements.
6.How does Aetrix verify that MP6529GF is sourced from the original manufacturer or authorized distributors?
All MP6529GF 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 MP6529GF meets industry standards.
7.What is the process for return or replacement of MP6529GF?
All MP6529GF units undergo pre-shipment inspection (PSI). If there is an issue with MP6529GF, 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 MP6529GF part is unused and in its original packaging.
Return procedure for MP6529GF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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