Renesas HIP4082EVAL

Overview

HIP4082EVAL from Intersil is a DC-AC isolated battery inverter evaluation board built around the HIP4082 80V N-channel MOSFET driver IC. It implements a two-stage topology: a 60kHz primary-side full-bridge inverter driving an isolation transformer, followed by a 55Hz secondary-side H-bridge producing a variable-duty-cycle quasi-square-wave output (115VAC RMS). Designed for UPS, portable battery-powered inverters, and telecom ring generators, it delivers up to 120W at ambient ≤30°C without heatsinking.

For engineers reviewing the HIP4082EVAL datasheet, HIP4082EVAL pinout, HIP4082EVAL application, or HIP4082EVAL equivalent, this page provides verified technical context, key specifications, supply availability, manufacturer background, and targeted FAQs - all grounded in the official AN9611 application note and HIP4082 product documentation.

Technical Context

The HIP4082EVAL implements a feed-forward regulated, two-stage DC-AC conversion architecture. The primary stage uses the HIP4082 to drive four RFP70N06 MOSFETs in full-bridge configuration at 60kHz with 0.5µs dead-time set by a 15kΩ resistor between DEL and VSS pins. The HIP4082 provides continuous level-shifted gate drive for upper MOSFETs and supports bootstrap power supply using external diodes D1/D2 and capacitors C1/C2.

The secondary stage employs a second H-bridge (Q6–Q9) controlled by HIP2500 gate drivers and a triangle-wave comparator circuit to generate phase-shifted 55Hz quasi-square-wave output. Output voltage regulation (±10% over 11–15V battery input) is achieved via duty-cycle adjustment based on high-voltage DC bus sensing, eliminating closed-loop feedback complexity.

Key Specifications

Availability

HIP4082EVAL is available at Aetrix Electronics and suitable for uninterruptible power supplies, portable battery inverters, and telecom backup ring generator systems requiring stable component supply and documented reference design validation.

Supply support for HIP4082EVAL 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 (now part of Renesas Electronics) is a U.S.-based semiconductor company specializing in high-performance analog and power management ICs, with legacy expertise in motor control, UPS, and high-voltage gate drivers.

The HIP4082EVAL belongs to Intersil's power evaluation platform family, designed explicitly to accelerate development of isolated DC-AC inverters for battery backup, automotive accessories, and telecom infrastructure applications.

FAQ

What is the primary function of the HIP4082EVAL evaluation board?

The HIP4082EVAL evaluation board is a complete, tested DC-AC isolated inverter reference design. It uses the HIP4082 gate driver IC to implement a two-stage conversion: first converting 12V DC to ~160V DC via a 60kHz transformer-isolated full-bridge, then inverting that high-voltage DC into a regulated 55Hz, 115VAC quasi-square-wave output. Its purpose is to demonstrate and validate HIP4082-based inverter topologies for UPS and portable power applications.

Does the HIP4082EVAL include safety warnings for high-voltage operation?

Yes - the HIP4082EVAL documentation explicitly states it contains HIGH VOLTAGE and poses a shock hazard when DC power is connected. A neon lamp is integrated to warn users of energized high-voltage circuits. The board is intended for lab evaluation only under supervised conditions, with appropriate insulation and probing precautions, consistent with AN9611 safety guidance.

Can the HIP4082EVAL be modified for 230VAC output?

Yes - the HIP4082EVAL transformer has two separate secondary windings that can be reconfigured from parallel (115VAC) to series (230VAC) via soldered jumpers. However, this requires upgrading power MOSFETs to ≥500V rating (e.g., IRF830R), doubling voltage ratings of C13, C23, and C27, and reducing C23/C27 capacitance by 4× to maintain snubber power dissipation. These modifications are documented in AN9611.

What gate driver ICs are used on the HIP4082EVAL board?

The HIP4082EVAL uses two distinct gate driver ICs: the HIP4082 drives the primary-side 60kHz full-bridge (Q1–Q4), while the secondary-side 55Hz H-bridge (Q6–Q9) is driven by HIP2500 high-voltage gate drivers. This dual-driver architecture separates high-frequency isolation-stage control from low-frequency output-stage synthesis, as confirmed in the schematic and AN9611 section "Secondary-Side Inverter".

How does the HIP4082EVAL achieve output voltage regulation without feedback?

The HIP4082EVAL uses a feed-forward regulation technique. It senses the high-voltage DC bus after primary-stage rectification and adjusts the 55Hz quasi-square-wave duty cycle inversely with bus voltage - narrower pulses at higher bus voltage, wider at lower - to maintain ~115VAC RMS output across 11–15V battery input. This avoids closed-loop stability issues while achieving ±10% regulation, as detailed in the "Secondary Inverter Control Circuits" section of AN9611.