NXP Semiconductors MCZ33395EW

Overview

MCZ33395EW from Freescale Semiconductor is a three-phase gate driver IC designed to drive six N-channel power MOSFETs in BLDC motor control bridges. It integrates charge pump circuitry, current sense comparator, PWM mode logic, and protection functions including overvoltage (36.5 V shutdown), overtemperature (190 °C limit), and shoot-through suppression (<5.0 μs). It operates from 5.5 V to 24 V VIGNP supply across –40 °C to 125 °C ambient and targets fractional-to-integral HP motor drives in automotive and industrial systems.

For engineers reviewing the MCZ33395EW datasheet, MCZ33395EW pinout, MCZ33395EW application, or MCZ33395EW equivalent, this page delivers verified technical context, real-world design meaning for each specification, validated pin roles, confirmed alternative parts with functional distinctions, and supply-ready availability details - all grounded in Freescale's Rev 4.0 technical data.

Technical Context

The MCZ33395EW implements complementary PWM control logic that routes duty-cycle signals to high-side (GDH1–3) or low-side (GDL1–3) drivers based on MODE0/MODE1 inputs, with <5.0 μs shoot-through suppression between transitions. Its integrated charge pump supports up to 28 kHz PWM operation and supplies elevated gate voltage for high-side N-MOSFETs using external CP1H/CP1L/CP2H/CP2L/CRES capacitors.

Protection is hardware-asserted: overvoltage shutdown triggers at 36.5 V on VIGNP, thermal shutdown activates at 190 °C, and current limiting responds within 5.0 μs via +ISENS/–ISENS comparator inputs. All fault states latch outputs off until next PWM edge, ensuring deterministic recovery without MCU intervention.

Key Specifications

Pinout & Package

MCZ33395EW uses a 32-pin SOIC wide-body surface-mount package (suffix EW denotes Pb-free finish), with exposed thermal pad not electrically connected. Pin layout follows standard SOICW pinout numbering (1–32), with dual ground domains (PGND for power, AGND for analog/logic) and dedicated charge pump capacitor terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC33395DWB/R2, MCZ33395EW adds Pb-free compliance without performance trade-off; compared with MC33395TEW/R2, it uses the standard 5.0 μs suppression timer - sufficient for most automotive and industrial BLDC applications while maintaining broader compatibility with existing designs.

Availability

MCZ33395EW is available at Aetrix Electronics and suitable for automotive HVAC blowers, industrial conveyor drives, cordless power tools, and medical infusion pump motors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MCZ33395EW 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) is a fabless semiconductor company specializing in automotive, industrial, and networking ICs with emphasis on robust analog and mixed-signal solutions.

The MCZ33395EW belongs to Freescale's 33395 family of three-phase gate drivers, engineered specifically for N-MOSFET-based BLDC motor control in harsh environments - prioritizing integrated protection, charge pump autonomy, and fault resilience over general-purpose flexibility.

FAQ

What is the function of the VGDH pin on the MCZ33395EW?

The VGDH pin on the MCZ33395EW provides a full-time gate drive signal to an external high-side MOSFET used for reverse-battery protection. When reverse polarity is detected, VGDH remains inactive, keeping the protection MOSFET off and isolating VIGNP from the rest of the circuit. This function is independent of PWM or mode logic and is hardwired into the IC's protection architecture.

Does the MCZ33395EW require external charge pump capacitors?

Yes, the MCZ33395EW requires three external capacitors: CP1H/CP1L for primary charge pump operation, CP2H/CP2L for secondary boosting, and CRES as a reservoir capacitor. The datasheet specifies CRES = QG × VGS / (2 × VGS × VSAG − VSAG²), with typical values around 0.15 μF for 60 nC gate charge and 0.2 V sag - omission causes insufficient high-side gate drive voltage.

How does the MCZ33395EW handle overcurrent conditions?

The MCZ33395EW detects overcurrent via the +ISENS and –ISENS differential inputs feeding an internal comparator. Upon threshold crossing, it asserts the current limit (CL) bit and disables all GDH/GDL outputs within 5.0 μs. The fault remains latched until the next PWM edge, ensuring controlled recovery without software intervention or oscillatory behavior.

What is the difference between MCZ33395EW and MC33395TEW/R2?

The MCZ33395EW implements a <5.0 μs shoot-through suppression timer, while MC33395TEW/R2 uses a <1.0 μs timer. Both share identical pinout, package, protection features, and electrical specs. The T-suffix variant is intended for higher-frequency PWM applications or stricter timing safety requirements - MCZ33395EW remains optimal for standard 28 kHz BLDC motor control.

Can the MCZ33395EW drive both high-side and low-side MOSFETs simultaneously in PWM mode?

Yes - when MODE1=1 and MODE0=1 (complementary PWM mode), the MCZ33395EW modulates both GDHn and GDLn outputs per phase using the same PWM input. The internal logic enforces mandatory dead time between transitions via its <5.0 μs shoot-through suppression timer, preventing simultaneous conduction while maximizing torque efficiency in BLDC commutation.