Monolithic Power Systems Inc. MP6527GF-Z

Overview

MP6527GF-Z from Monolithic Power Systems is a 10-channel, half-bridge motor driver IC with integrated DMOS power MOSFETs, serial SPI interface control, and comprehensive diagnostics. It delivers up to 0.8A per channel across 5.5V–40V supply range, features 1.3Ω typical R_DS(ON) for HS/LS FETs, and operates in automotive and industrial motor control systems driving DC motors, solenoids, and valves.

For engineers reviewing the MP6527GF-Z datasheet, MP6527GF-Z pinout, MP6527GF-Z application, or MP6527GF-Z equivalent, key selection criteria include its 10 independent half-bridge topology, 5MHz SPI clock support, thermal pre-warning and shutdown thresholds (120°C/150°C), open-load detection with programmable shutdown, and dual VS1/VS2 power domains enabling flexible PCB layout in multi-motor modules.

Technical Context

The MP6527 implements a dual-domain power architecture: VS1 supplies drivers for channels 1,2,5,7,8 and internal LDO/charge pump; VS2 powers channels 3,4,6,9,10 - both must be externally tied. Its SPI interface uses CS-active-low framing, DI data latched on CLK falling edge, and DO output enabled on CS falling edge with PRE_15 thermal latch bit.

Each half-bridge supports independent high-side-on / low-side-on configuration via 16-bit input registers, with diagnostic feedback including latched over-current (OC), open-load (OLD), thermal warning (TW), and power supply failure (PSF) bits returned via DO. Faults persist until cleared by Status Register Reset (SRR), EN toggle, or VCC power-on reset.

Key Specifications

Pinout & Package

TSSOP-28EP package with exposed thermal pad on bottom for enhanced heat dissipation; pin-compatible with industry-standard TSSOP-28 footprint but requires solder paste stencil optimization for thermal pad reflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-channel half-bridge motor driver applications.

Compared with TB9051FTG and DRV8876N, MP6527GF-Z uniquely balances 10-channel integration, SPI configurability, full diagnostic latching, and 0.8A capability in a compact TSSOP-28EP - making it optimal for space-constrained, multi-actuator systems requiring deterministic fault handling without CAN infrastructure.

Availability

MP6527GF-Z is available at Aetrix Electronics and suitable for automotive HVAC actuators, industrial PLC output modules, medical infusion pump motor control, and robotics joint actuation requiring stable component supply across extended production lifecycles.

Supply support for MP6527GF-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 design centers in the US, China, and Taiwan, and global distribution since 1997.

The MP65xx series targets high-channel-count motor control in space- and reliability-constrained environments, emphasizing serial configurability, integrated protection, and diagnostic transparency for automotive and industrial applications.

FAQ

What is the maximum allowable voltage on the VS pins, and what happens above that limit?

The absolute maximum VS supply voltage is 45V. Exceeding this rating risks permanent damage to internal DMOS transistors and gate drivers. The device includes over-voltage lockout (OVLO) that triggers at 33–39V (typical 36V) to disable outputs before reaching 45V, but sustained exposure above 45V voids reliability guarantees and may cause immediate failure.

How does the open-load detection (OLD) function interact with the OLSD_EN bit?

When OLSD_EN is set to 1, detected open-load conditions (current <1–45mA for >200–600μs) force the corresponding half-bridge into Hi-Z state and latch the OLD bit. If OLSD_EN = 0, the OLD bit still asserts but the output remains active. Both modes require SRR or reset to clear the latched bit - the bit does not auto-clear when load is restored.

Can MP6527GF-Z drive inductive loads without external flyback diodes?

Yes - the integrated DMOS half-bridges include body diodes capable of clamping inductive kickback during turn-off. No external flyback diodes are required for standard DC motor or solenoid loads within the 0.8A/40V ratings. However, layout must minimize loop inductance, and thermal design must account for energy dissipated in R_DS(ON) during freewheeling.

What is the purpose of the PRE_15 bit on the DO line, and how is it read?

PRE_15 is the latched thermal shutdown (TSD) status bit, asserted when junction temperature reaches 150°C. It appears as the MSB of the 16-bit DO response immediately after CS falls, and remains valid until the first rising CLK edge post-CS-fall. It is not part of the main status register and cannot be cleared by SRR - only by power cycle or EN toggle.

Is the TSSOP-28EP package RoHS-compliant and lead-free?

Yes - MP6527GF-Z is fully RoHS-compliant, lead-free, and halogen-free per MPS green policy. The TSSOP-28EP package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 2A, requiring dry pack storage and assembly within 1 year of seal opening unless baked.

How does the dual VS1/VS2 supply architecture affect PCB layout and thermal design?

VS1 and VS2 must be externally shorted with low-inductance copper; splitting them violates internal biasing and causes malfunction. The exposed thermal pad requires ≥70% solder coverage and connection to a solid internal ground plane for θ_JA = 32°C/W. Thermal vias under the pad (≥8×0.3mm) are mandatory for >0.5A continuous operation per channel.

What is the minimum pulse width required on the EN pin to ensure reliable wake-up from standby?

The EN pin must remain high for ≥50μs after transition to guarantee full register initialization and output stage enable. This timing is specified in the "EN low valid time" parameter (50μs typ). Shorter pulses may result in partial initialization, inconsistent channel states, or failure to exit standby - firmware must enforce this minimum assertion width.