Monolithic Power Systems Inc. MP6530GR-P

Overview

MP6530GR-P from Monolithic Power Systems is a three-phase brushless DC motor pre-driver IC that controls six external N-channel MOSFETs in half-bridge configuration, supporting input voltages from 5V to 60V, delivering 0.8A source / 1A sink gate drive current, and enabling 100% duty-cycle operation via integrated trickle-charge bootstrap circuitry - used in cordless power tools like impact drivers and e-bike motor controllers.

For engineers reviewing the MP6530GR-P datasheet, MP6530GR-P pinout, MP6530GR-P application, or MP6530GR-P equivalent, key selection criteria include adjustable dead-time control (30ns–6µs), VDS-based short-circuit protection with 0.8–2.62V threshold accuracy, LSS-based over-current protection with 0.4–0.6V trip point, thermal shutdown at 150°C, and fault reporting via open-drain nFAULT output.

Technical Context

The MP6530GR-P implements a regulated charge pump to generate ~11.5V VREG for low-side gate drive while using bootstrap capacitors and an internal trickle-charge circuit to sustain high-side gate voltage during 100% duty cycle. It integrates independent ENx/PWMx logic per phase with automatic low-side turn-on pulse (1.8µs) on enable transition.

Protection architecture includes dual-path overcurrent detection: VDS sensing across each MOSFET (referenced to OCREF voltage) and low-side shunt sensing at LSS pin, both with 3µs deglitch timing; UVLO thresholds are 3.3–4.5V on VIN and 6.8–8.4V on VREG, with latched fault behavior resettable only by nSLEEP or VIN cycling.

Key Specifications

Pinout & Package

MP6530GR-P is housed in a thermally enhanced 28-pin QFN package (4mm × 4mm) with exposed thermal pad soldered to PCB ground plane for efficient heat dissipation. Pin numbering follows standard QFN top-view layout with Pin 1 at top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase BLDC pre-driver applications.

Compared with DRV8305PWP and STSPIN32F0A, MP6530GR-P offers superior voltage margin (60V), simpler analog protection tuning via OCREF/LSS, and lower system-level component count for MCU-based designs - making it optimal for cost-sensitive, high-voltage cordless tools.

Availability

MP6530GR-P is available at Aetrix Electronics and suitable for cordless power tools, e-bike motor controllers, industrial BLDC fans, and HVAC blower modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for MP6530GR-P 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, and global distribution through authorized partners.

The MP6530 belongs to MPS's motor driver pre-driver product line, engineered specifically for rugged, high-efficiency three-phase BLDC control in portable and industrial equipment where reliability, thermal performance, and programmable protection are critical.

FAQ

What is the minimum input voltage required for MP6530GR-P to generate functional gate drive voltage?

The MP6530GR-P generates a regulated ~11.5V VREG supply down to 5V VIN using its internal charge pump. Below 5V, VREG drops below specification and gate drive capability degrades - confirmed by electrical characteristics table showing VREG = 2×VIN−1V at VIN = 5V, yielding ~9V minimum.

How does the trickle-charge circuit enable 100% duty cycle operation?

The internal trickle-charge circuit supplies ~5µA to each bootstrap capacitor during high-side conduction, compensating for leakage and maintaining sufficient gate voltage even when the low-side MOSFET never turns on - verified in Applications Information section and functional block diagram.

Can MP6530GR-P drive both high-side and low-side N-channel MOSFETs without external level shifters?

Yes - it integrates bootstrap high-side drivers with internal charge pump and trickle-charge circuitry, eliminating need for external level shifters; bootstrap capacitors (0.1–1µF) and proper PCB layout ensure reliable HS gate drive up to 60V bus.

What is the purpose of the LSS pin, and how is its over-current threshold set?

LSS monitors voltage across an external low-side shunt resistor; OCP triggers when LSS voltage exceeds 0.4–0.6V (typical). Threshold is fixed by internal comparator - no programming required - and is independent of OCREF, enabling dual-path fault detection.

Is MP6530GR-P pin-compatible with other packages in the MP6530 family?

No - MP6530GR-P (QFN-28) and MP6530GF (TSSOP-28 EP) share identical functionality and logic pinout but differ in physical layout, thermal pad configuration, and pin numbering; PCB redesign is required for package substitution.

Does MP6530GR-P support sensorless commutation or require external Hall sensors?

MP6530GR-P is a gate driver only and provides no built-in commutation logic or sensor interface; it requires external MCU or controller to generate PWM and EN signals based on rotor position from Hall sensors, back-EMF, or encoder feedback.

What thermal resistance values apply to MP6530GR-P in its QFN package?

For the QFN-28 (4mm × 4mm) package, θ_JA = 42°C/W and θ_JC = 9°C/W, measured per JESD51-7 on a 4-layer PCB - enabling 2.9W continuous power dissipation at +25°C ambient, as specified in Absolute Maximum Ratings.