Renesas HIP4020IBZT

Overview

HIP4020IBZT from Renesas Electronics is a dual half-H-bridge power driver IC for bidirectional control of small DC motors and inductive loads up to 0.5A per channel, operating from +2.5V to +15V single supply or split ±3V/±6V configurations, with integrated overcurrent fault flag (ILF), thermal shutdown at 145°C, and CMOS/TTL-compatible logic inputs - used in motor direction/braking/PWM control circuits for instrumentation and battery-powered devices.

For engineers reviewing the HIP4020IBZT datasheet, HIP4020IBZT pinout, HIP4020IBZT application, or HIP4020IBZT equivalent, key selection considerations include its 20-pin SOIC package, independent ENA/ENB enable control per bridge, current-limiting protection (625 mA typical), low rDS(ON) of 0.5 Ω (N-channel, VDD = +12V), and compatibility with microcontroller-driven H-bridge motor control topologies requiring dynamic braking and 4-quadrant load control.

Technical Context

The HIP4020IBZT implements two independent complementary MOSFET half-H-drivers (Q1/Q2 for OUTA; Q3/Q4 for OUTB) arranged in full-bridge topology, enabling forward/reverse motor rotation and active braking via synchronous A1/A2/B1/B2 input logic. Level-shifting gate drivers allow NMOS low-side switching referenced to separate VSSA/VSSB supplies, supporting split-rail operation down to ±3V.

Control logic includes dedicated enable pins (ENA/ENB) for high-impedance off-state per channel, overcurrent detection on both outputs with open-drain ILF flag output, and internal thermal shutdown that clamps junction temperature at 145°C. The device operates across -40°C to +85°C ambient and supports PWM duty-cycle modulation without external timing components.

Key Specifications

Pinout & Package

Package: 20-lead SOIC (M20.3), RoHS-compliant, 7.60 mm × 10.65 mm body, 1.27 mm pitch, rated for -40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB6612FNG and VN772K, the HIP4020IBZT uniquely supports true split-rail operation with independent VSSA/VSSB, enabling precision bipolar motor control in instrumentation - while offering lower system cost than VN772K-based solutions and simpler layout than TB6612FNG in ±3V applications.

Availability

HIP4020IBZT is available at Aetrix Electronics and suitable for DC motor control, instrumentation driver, remote power switch, and stepper motor microstepping applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for HIP4020IBZT 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

Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and SoC products for automotive, industrial, and enterprise applications.

The HIP4020IBZT belongs to Renesas' legacy high-voltage power driver product line, designed specifically for compact, low-cost bidirectional motor and solenoid control in instrumentation, automotive clusters, and portable equipment.

FAQ

What is the maximum continuous output current supported by the HIP4020IBZT?

The HIP4020IBZT supports a continuous output current of 0.5A per channel (OUTA or OUTB), with self-limiting behavior activated at 625 mA typical. This limit is maintained across the full operating voltage range (+2.5V to +15V) and ambient temperature range (-40°C to +85°C). Exceeding this current triggers the internal overcurrent protection, holding output current at the limit rather than shutting down - ensuring safe operation during motor stall or short-circuit events. The HIP4020IBZT datasheet specifies 480–1500 mA as the full tolerance band depending on test conditions.

Can the HIP4020IBZT operate with a split ±3V supply configuration?

Yes, the HIP4020IBZT supports split-supply operation with VDD = +3V and VSSA/VSSB = -3V relative to logic ground (VSS), enabling true bipolar output swing. This configuration is explicitly validated in Figures 10 and 11 of the HIP4020IBZT datasheet, showing saturation voltage vs. load current under ±3V and ±6V conditions. The separate VSSA and VSSB pins allow independent grounding of each half-bridge, making the HIP4020IBZT suitable for precision instrumentation requiring symmetrical drive waveforms without external level shifters.

How does the ILF (Overcurrent Limit Fault Flag) output function on the HIP4020IBZT?

The ILF pin on the HIP4020IBZT is an open-drain output that remains low during normal operation and pulls high only when an overcurrent or overtemperature fault occurs on either OUTA or OUTB. It does not indicate which channel is faulty - only that at least one channel has entered current-limiting mode or thermal shutdown. The HIP4020IBZT datasheet specifies ILF as a "fault flag output" with no internal pull-up; users must add an external pull-up resistor (typically 10 kΩ to VDD) to generate a valid logic-high signal. This allows simple MCU GPIO monitoring for system-level fault response.

What is the purpose of the A2 and B2 inputs on the HIP4020IBZT?

The A2 and B2 inputs on the HIP4020IBZT provide dedicated dynamic braking control for each half-bridge. When A2 is high and ENA is high, both Q1 and Q4 conduct simultaneously, shorting the motor terminals connected to OUTA and VSSA - dissipating kinetic energy as heat in the motor winding. Similarly, B2 enables braking on the OUTB side. This function is distinct from direction control (A1/B1) and enable (ENA/ENB), allowing independent activation of braking without reversing motor polarity. The HIP4020IBZT truth table confirms that A2/B2 high + ENA/ENB high forces OL (output low) state regardless of A1/B1 state.

Does the HIP4020IBZT require external flyback diodes for inductive load protection?

Yes, the HIP4020IBZT requires external flyback diodes across inductive loads (e.g., motors, solenoids) because it does not integrate body-diode clamping or active freewheeling paths. The internal MOSFETs lack sufficient reverse-voltage rating and conduction capability to safely handle inductive kickback. Figure 2 of the HIP4020IBZT datasheet explicitly shows external diodes D1–D4 connected between OUTA/OUTB and their respective supply rails (VDD, VSSA, VSSB). Omitting these diodes risks exceeding absolute maximum voltage ratings and causing permanent device failure during turn-off transients.