NXP Semiconductors MPC17511AEP

Overview

MPC17511AEP from Freescale Semiconductor is a monolithic H-bridge motor driver IC designed for portable electronics, delivering 1.0 A continuous and 3.0 A peak output current with 0.46 Ω typical R_DS(ON) MOSFETs, operating from 2.0 V to 6.8 V supply, and supporting PWM up to 200 kHz for DC or bipolar stepper motor control in camera focus, shutter solenoids, and head positioners.

For engineers reviewing the MPC17511AEP datasheet, MPC17511AEP pinout, MPC17511AEP application, or MPC17511AEP equivalent, this device requires attention to its 24-pin QFN package, integrated charge pump (VCRES ≈ 3×VDD), cross-conduction suppression logic, undervoltage shutdown thresholds (VDDDET = 2.0 V typ), and GOUT gate driver output for external high-side switching.

Technical Context

The MPC17511AEP integrates a tripler charge pump generating ~13 V at CRES to drive internal high-side MOSFET gates, enabling full H-bridge operation from low-voltage logic supplies. Its predriver stage includes level-shifting and shoot-through prevention via timing-controlled cross-conduction suppression logic.

Four discrete operating modes-Forward, Reverse, Brake (both INs HIGH or EN LOW), and Tri-State (both INs LOW)-are implemented through synchronous control of dual half-bridges. The GIN/GOUT interface provides an auxiliary level-shifted gate drive signal capable of sourcing/sinking 50 μA into capacitive loads ≤500 pF.

Key Specifications

Pinout & Package

The MPC17511AEP is housed in a 24-pin QFN package (98ARL10577D, Issue B) with exposed thermal pad, optimized for compact portable designs requiring efficient heat dissipation (R_θJA = 50 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB6612FNG and VN7700ASTR, the MPC17511AEP uniquely combines integrated charge pump-based gate drive, GOUT auxiliary output, and 24-pin QFN thermal performance for portable battery-operated motor systems - making it optimal where external gate drivers, compact layout, and low-voltage operation are critical.

Availability

MPC17511AEP is available at Aetrix Electronics and suitable for camera focus mechanisms, optical disc head positioners, shutter solenoid actuators, and bipolar stepper motor control requiring stable component supply and long-term manufacturability.

Supply support for MPC17511AEP 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

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of analog and mixed-signal ICs for automotive, industrial, and portable electronics markets before its 2015 acquisition.

The MPC17511AEP belongs to Freescale's analog motor driver product line, engineered specifically for low-voltage, high-efficiency H-bridge control in space- and power-constrained portable devices.

FAQ

What is the maximum continuous output current rating for the MPC17511AEP?

The MPC17511AEP is rated for 1.0 A continuous output current per channel under TA = 25°C conditions with proper PCB thermal design. This value is guaranteed across the full operating temperature range (-20°C to +65°C) when used within specified voltage and thermal limits. Peak current capability reaches 3.0 A for 10 ms pulses at 200 ms intervals. Exceeding these ratings without adequate heatsinking may trigger thermal shutdown or cause permanent damage to the MPC17511AEP.

Does the MPC17511AEP require external capacitors, and if so, what values are recommended?

Yes, the MPC17511AEP requires three external ceramic capacitors: two 0.1 μF bucket capacitors (C1H/C1L and C2H/C2L) and one 0.1 μF reservoir capacitor (CRES). These values are specified in Table 4 of the datasheet and validated for stable charge pump operation across temperature and supply variations. Using values outside the 0.01–1.0 μF range may degrade VCRES regulation, increase ripple, or cause startup failure in the MPC17511AEP.

How does the MPC17511AEP implement dynamic braking, and what input conditions trigger it?

The MPC17511AEP implements dynamic braking in two ways: (1) by setting both IN1 and IN2 HIGH, which turns on both low-side MOSFETs to short the motor windings; or (2) by pulling EN LOW, which disables the entire output stage and places OUT1/OUT2 in high-impedance while retaining logic functionality. Both methods dissipate motor kinetic energy as heat in the MOSFETs. This behavior is confirmed in Table 6 (Truth Table) and Functional Description section of the MPC17511AEP datasheet.

What is the purpose of the GOUT pin on the MPC17511AEP, and what load can it drive?

The GOUT pin on the MPC17511AEP provides a level-shifted, high-side gate drive signal referenced to VCRES (≈13 V), enabling direct control of external high-side N-channel MOSFETs. It is specified to source/sink 50 μA while maintaining defined voltage levels (VGOUTHIGH ≥ VCRES – 0.5 V, VGOUTLOW ≤ LGND + 0.5 V). This allows reliable switching of MOSFETs with input capacitance up to 500 pF, extending the MPC17511AEP's flexibility beyond its internal H-bridge.

Is the MPC17511AEP compatible with 3.3 V microcontroller logic interfaces?

Yes, the MPC17511AEP supports 3.0 V–5.0 V TTL/CMOS-compatible logic inputs (IN1, IN2, EN, GIN), with VIH minimum = 0.7 × VDD and VIL maximum = 0.3 × VDD. When VDD = 3.3 V, the high-level input threshold is 2.31 V and low-level is 0.99 V - well within standard 3.3 V MCU output swing. No level-shifting circuitry is needed, making the MPC17511AEP directly interoperable with 3.3 V microcontrollers in portable systems.