Renesas HIP4081AIPZ

Overview

HIP4081AIPZ from Intersil is a high-frequency, 80V/2.5A peak full-bridge N-channel FET driver IC in a 20-lead PDIP package. It independently drives four external MOSFETs in half-bridge or full-bridge topologies, supports up to 1MHz switching, features user-programmable dead time via HDEL/LDEL pins, and delivers <10ns rise/fall times into 1000pF loads-enabling precise control of voice coil motors and medium-voltage brush motors.

For engineers reviewing the HIP4081AIPZ datasheet, HIP4081AIPZ pinout, HIP4081AIPZ application, or HIP4081AIPZ equivalent, key selection considerations include its 55ns typical propagation delay, bootstrap supply clamping at ~12.8V, undervoltage lockout thresholds (UV+ = 8.8V typ), independent dual-channel logic interface, and Pb-free PDIP packaging compatible with SnPb and Pb-free reflow.

Technical Context

The HIP4081AIPZ integrates on-chip charge-pump and bootstrap bias supplies to sustain high-side gate drive for N-channel MOSFETs operating up to 80V bus voltage. Its dual independent input architecture (ALI/AHI, BLI/BHI) enables flexible bridge control modes-including bistate operation where low-side inputs govern both high- and low-side outputs with adjustable dead time.

Logic inputs accept 5V–15V levels and feature internal latching with shoot-through prevention via input override hierarchy (e.g., ALI overrides AHI). The DIS pin provides global output disable with sub-100ns propagation delay to all outputs, while HDEL and LDEL pins set turn-on delays using external resistors to enforce safe dead-time margins.

Key Specifications

Pinout & Package

Package: 20-lead plastic DIP (PDIP), Pb-free, JEDEC MS-001-AD compliant (PKG DWG # E20.3), thermal resistance θ_JA = 75°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HIP4080AIPZ and IRS2004SPBF, the HIP4081AIPZ uniquely balances high-frequency performance (1MHz), fine-grained dead-time adjustability, and medium-voltage robustness (80V) in a through-hole package ideal for prototyping and industrial motor control.

Availability

HIP4081AIPZ is available at Aetrix Electronics and suitable for voice coil motor control, full-bridge power supplies, and battery-powered vehicle drives requiring stable component supply, long-term industrial lifecycle support, and Pb-free compliance.

Supply support for HIP4081AIPZ 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

Intersil Corporation is a leading provider of precision analog and power management solutions, now part of Renesas Electronics, with deep expertise in high-performance gate drivers and motor control ICs.

The HIP4081AIPZ belongs to Intersil's high-frequency bridge driver product line, engineered specifically for demanding applications like noise-cancellation systems, high-fidelity audio amplifiers, and precision motion control where timing accuracy and shoot-through immunity are critical.

FAQ

What is the maximum switching frequency supported by the HIP4081AIPZ?

The HIP4081AIPZ supports switching frequencies up to 1MHz while maintaining <10ns rise/fall times into 1000pF loads. This capability is validated across the full -40°C to +85°C operating range and enables high-bandwidth control in voice coil motors and Class-D amplifiers. Performance data in Figures 5 and 6 of the FN3659 datasheet confirm stable operation at 1MHz with minimal supply current increase.

How does the HIP4081AIPZ prevent shoot-through in full-bridge configurations?

The HIP4081AIPZ prevents shoot-through through three integrated mechanisms: (1) input priority logic where low-side inputs (ALI/BLI) override high-side inputs (AHI/BHI), (2) user-programmable dead time via HDEL and LDEL pins that delay high- or low-side turn-on, and (3) a global DIS pin that forces all outputs low within 105ns. These features are implemented in hardware and require no external timing components.

Can the HIP4081AIPZ drive both high-side and low-side N-channel MOSFETs without external level shifters?

Yes-the HIP4081AIPZ integrates on-chip charge-pump and bootstrap circuits to generate the required floating gate drive voltage for high-side N-MOSFETs. With external bootstrap diodes and capacitors connected to pins AHB/BHB and AHS/BHS, it sustains ~12.8V gate drive referenced to the high-side source, enabling direct drive of N-channel devices in full-bridge topologies up to 80V bus voltage.

What is the purpose of the HDEL and LDEL pins on the HIP4081AIPZ?

HDEL and LDEL pins set the turn-on delay for high-side and low-side drivers respectively, using external resistors to ground. Each pin has an internal ~5.1V reference; the resulting current programs the dead-time interval to prevent simultaneous conduction. Figure 30 in the FN3659 datasheet shows dead time varying from ~30ns to >150ns as resistance changes from 10kΩ to 250kΩ.

Is the HIP4081AIPZ pin-compatible with earlier HIP4081AIP variants?

Yes-the HIP4081AIPZ is the Pb-free replacement for the obsolete HIP4081AIP, sharing identical pinout, electrical specifications, and package dimensions (20-lead PDIP, E20.3). The only difference is the matte tin termination and updated moisture sensitivity level (MSL) rating to meet Pb-free reflow requirements, with no impact on board layout or circuit design.