NXP Semiconductors MPC17511EPR2

Overview

MPC17511EPR2 from NXP Semiconductors (formerly Freescale) is a monolithic H-bridge motor driver IC designed for bidirectional control of micro brushed DC motors in portable battery-powered systems. It delivers 1.0 A continuous / 3.0 A peak output current, features 0.46 Ω typical R_DS(ON), supports 200 kHz PWM input, and operates from 2.0 V to 6.8 V motor supply with 2.7 V–5.7 V logic compatibility - used in single-lens camera autofocus actuators.

For engineers reviewing the MPC17511EPR2 datasheet, MPC17511EPR2 pinout, MPC17511EPR2 application, or MPC17511EPR2 equivalent, key selection considerations include its integrated charge pump, shoot-through protection, tri-state bridge control, TSWITCH output for external MOSFET drive, and QFN-24 package suitability for space-constrained optical disc drive modules.

Technical Context

The MPC17511EPR2 implements a fully integrated dual-N-channel H-bridge with internal level shifters and charge pump to sustain gate drive above VM across its 2.0–6.8 V motor voltage range. Its parallel MCU interface accepts 3.0 V/5.0 V logic inputs (IN1–IN3, EN) and provides four discrete output modes: Forward, Reverse, Brake, and Tri-state (Open).

It integrates undervoltage lockout (UVLO) at ~2.0 V, shoot-through current prevention via logic-controlled dead-time, and thermal shutdown. The TSWITCH output enables synchronous control of an external high-side or low-side MOSFET, extending system-level current capability beyond the IC's 1.0 A continuous rating.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (PGND/LGND connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB6612FNG and DRV8833, the MPC17511EPR2 uniquely combines 0.46 Ω R_DS(ON), 6.8 V VM tolerance, integrated charge pump, and TSWITCH output - making it optimal for compact, high-efficiency single-motor systems requiring extended voltage headroom and external current boosting.

Availability

MPC17511EPR2 is available at Aetrix Electronics and suitable for portable electronics, optical disc drive modules, single-lens camera autofocus mechanisms, and battery-powered micro-motor control applications requiring stable component supply and long-term industrial availability.

Supply support for MPC17511EPR2 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

NXP Semiconductors is a global semiconductor company formed from the spin-off of Freescale Semiconductor and Philips' semiconductor division, specializing in secure connectivity solutions and analog/mixed-signal ICs.

The MPC17511EPR2 belongs to NXP's legacy analog power IC portfolio, engineered specifically for high-efficiency, space-constrained micro-motor control in consumer optical and imaging devices.

FAQ

What is the maximum motor supply voltage supported by the MPC17511EPR2?

The MPC17511EPR2 supports a motor supply voltage (VM) up to 6.8 V. This rating is absolute maximum and validated across temperature and process corners. Operation above this voltage risks permanent damage to the internal H-bridge MOSFETs. For reliable long-term use in portable systems, design margin should maintain VM ≤6.5 V under worst-case transient conditions. The MPC17511EPR2 maintains full functionality down to 2.0 V VM, including UVLO activation and gate drive integrity.

Does the MPC17511EPR2 require external capacitors, and if so, what values are recommended?

Yes, the MPC17511EPR2 requires three external capacitors: a 100 nF ceramic capacitor on CRES for charge pump stability, and two 1 µF–10 µF X5R/X7R ceramics on VM (C1H/C1L) and VDD (C2H/C2L) for local decoupling. These values are specified in the Freescale MPC17511 datasheet and validated for noise suppression and transient response. Omitting the CRES capacitor causes unstable gate drive and erratic output behavior. The MPC17511EPR2 performance degrades significantly without proper decoupling.

How does the TSWITCH output function in the MPC17511EPR2, and what is its voltage/current capability?

The TSWITCH output in the MPC17511EPR2 is an open-drain, PGND-referenced driver intended to control the gate of an external N-channel MOSFET. It sinks up to 10 mA and swings rail-to-rail between 0 V and VM. Its timing aligns with the internal H-bridge states, enabling synchronous current boosting. It does not provide level shifting or voltage boosting. When used with the MPC17511EPR2, TSWITCH allows extending motor current beyond 1.0 A continuous - critical for high-torque startup in optical disc sleds.

What are the thermal limitations of the MPC17511EPR2 in its QFN-24 package?

The MPC17511EPR2 in 24-pin QFN (4 mm × 4 mm) has a junction-to-ambient thermal resistance (R_θJA) of 50°C/W with standard 2-layer PCB layout and 1-in² copper pour. At 1.0 A continuous output and 0.46 Ω R_DS(ON), power dissipation is ~0.46 W, resulting in ~23°C junction rise above ambient. Derating begins above 65°C ambient per datasheet; full 1.0 A rating requires ≤55°C ambient with adequate copper area. The MPC17511EPR2 includes thermal shutdown at ~150°C to prevent damage.

Can the MPC17511EPR2 operate with a 3.3 V logic supply while driving a 6 V motor?

Yes, the MPC17511EPR2 supports independent logic and motor supplies: VDD may be 3.3 V (within 2.7–5.7 V range) while VM operates up to 6.8 V. Its internal charge pump and level shifters ensure full gate drive strength regardless of VDD level. All control inputs (IN1–IN3, EN) are 3.3 V tolerant and functional at that voltage. This separation allows direct interfacing with 3.3 V MCUs in 6 V motor systems - a core design feature confirmed in the MPC17511EPR2 application diagram and electrical characteristics table.