Monolithic Power Systems Inc. MP6530GF-P

Overview

MP6530GF-P 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–60V input, integrates a regulated charge pump (11.5V VREG output), supports 100% duty cycle via trickle-charged bootstrap circuitry, and delivers 0.8A source / 1A sink gate drive current. Used in cordless power tools like impact drivers and e-bikes for precise phase commutation.

For engineers reviewing the MP6530GF-P datasheet, MP6530GF-P pinout, MP6530GF-P application, or MP6530GF-P equivalent, key selection criteria include its adjustable dead-time control (30ns–6µs), programmable short-circuit protection via OCREF input, LSS-based over-current sensing with 0.5V threshold, thermal shutdown at 150°C, and TSSOP-28 EP package with exposed thermal pad for industrial motor control designs.

Technical Context

The MP6530GF-P implements a three-phase gate driver architecture with independent ENx/PWMx logic per phase, internal charge pump regulation for VREG (10–12.8V), and bootstrap-based high-side drive with active trickle-charge to sustain gate voltage during 100% duty operation. Its fault-handling block includes VDS-sensing short-circuit detection referenced to OCREF and LSS-referenced over-current protection with 3µs deglitch timing.

Control is implemented through dedicated enable (ENA/ENB/ENC), PWM (PWMA/PWMB/PWMC), and configuration pins (DT for dead time, OCREF for current limit, nSLEEP for low-power mode). The device uses internal pull-downs on all logic inputs and features open-drain nFAULT reporting with latch-off behavior until reset by VIN UVLO or nSLEEP toggle.

Key Specifications

Pinout & Package

TSSOP-28 EP package (9.7mm × 6.4mm) with exposed thermal pad connected to GND for enhanced thermal dissipation in high-current motor drive applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MP6531GF-P, MP6530GF-P reduces system cost and layout area by omitting the current-sense amplifier while retaining identical protection and drive performance; versus DRV8305PWP, it supports higher voltage (60V vs 40V) and guaranteed 100% duty operation - making it optimal for ruggedized cordless tools and e-bike drives.

Availability

MP6530GF-P is available at Aetrix Electronics and suitable for power drills, impact drivers, and e-bike motor controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP6530GF-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.

The MP6530 product line targets high-efficiency, high-reliability three-phase BLDC motor pre-driver applications in portable power tools, e-mobility, and industrial motion control - emphasizing wide-input operation, integrated protection, and thermally robust packaging.

FAQ

What is the maximum allowable VIN voltage for continuous operation of MP6530GF-P?

The MP6530GF-P supports continuous operation up to 60V on the VIN pin, with an absolute maximum rating of 65V. Operation beyond 60V violates recommended conditions and risks permanent damage due to exceeding internal UVLO and charge pump voltage limits, even for brief transients.

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

The trickle-charge circuit supplies ~5µA to each bootstrap node (BSTA/BSTB/BSTC) to counteract leakage currents that would otherwise discharge the bootstrap capacitors during sustained high-side conduction. This maintains sufficient gate voltage to keep the high-side MOSFET fully enhanced without requiring alternating low-side switching.

Can MP6530GF-P drive both N-channel and P-channel high-side MOSFETs?

No - MP6530GF-P is designed exclusively for N-channel high-side MOSFETs using bootstrap gate drive. It lacks the level-shifting architecture or floating supply required for P-channel high-side drive. Its GHA/GHB/GHC outputs are referenced to SHA/SHB/SHC, not ground.

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

The LSS pin monitors voltage across an external low-side shunt resistor to detect over-current conditions. Its internal comparator trips when LSS voltage exceeds 0.5V (typical), corresponding to motor stall current. Threshold is fixed; current limit is set solely by shunt resistance value (e.g., 50mΩ → 10A trip).

Is the nFAULT output latched or auto-recovering after a fault event?

The nFAULT output is latched low during fault conditions including thermal shutdown, OCP, or short-circuit detection. Recovery requires either toggling nSLEEP from low to high or cycling VIN below UVLO threshold (3.3–4.5V) - no automatic reset occurs once latched.

Does MP6530GF-P require external bootstrap diodes?

No - MP6530GF-P integrates internal bootstrap diodes (VFBOOT = 0.9–1.3V at 10–100mA) between BSTx and VREG. External diodes are unnecessary and may interfere with the internal trickle-charge function or cause reverse current paths.

What is the minimum recommended dead time for safe operation with 40V bus voltage?

A minimum dead time of 30ns is internally applied when DT is tied to GND, but this is insufficient for 40V operation due to MOSFET turn-off delay and propagation skew. For 40V systems, a 200kΩ DT resistor (≈1µs dead time) is recommended to ensure shoot-through immunity across temperature and process variation.