Renesas ISL6745EVAL1Z

Overview

ISL6745EVAL1Z from Intersil is an evaluation board for the ISL6745 double-ended voltage-mode PWM bridge controller, designed to validate half-bridge and full-bridge DC/DC converter designs with precision deadtime control down to 35ns, adjustable oscillator frequency up to 2MHz, and integrated 1A gate drivers in MSOP-10 package. It supports line-regulated bus converters in telecom and datacom power systems.

For engineers reviewing the ISL6745EVAL1Z datasheet, ISL6745EVAL1Z pinout, ISL6745EVAL1Z application, or ISL6745EVAL1Z equivalent, this board enables rapid prototyping of high-efficiency open-loop and closed-loop bridge topologies with verified overcurrent shutdown, soft-start sequencing, and thermal protection behavior under real-world load and line transients.

Technical Context

The ISL6745EVAL1Z implements the ISL6745 IC's internal architecture-including dual-output PWM toggle logic, retriggerable 50µs overcurrent one-shot timer, CT/RTD-based oscillator with 156µA typical charge current, and SS-controlled duty-cycle ramp-on a pre-layout PCB with optimized ground plane, VDD/VDDP decoupling, and MOSFET gate drive paths.

It validates key timing behaviors: 35ns CS-to-OUT propagation delay, <15°C thermal shutdown hysteresis, and deadtime adjustment via CT capacitance (e.g., 100–1000pF) while maintaining stable operation across -40°C to +105°C ambient per the ISL6745's guaranteed spec range.

Key Specifications

Availability

ISL6745EVAL1Z is available at Aetrix Electronics and suitable for telecom power supply validation, datacom bus converter development, and industrial half-bridge design verification requiring stable component supply and repeatable bench characterization.

Supply support for ISL6745EVAL1Z 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 (now part of Renesas Electronics) is a U.S.-based analog and power management semiconductor company founded in 1967, specializing in high-performance power conversion, thermal management, and precision analog ICs.

The ISL6745EVAL1Z belongs to Intersil's bridge controller evaluation platform family, developed to accelerate adoption of cost-optimized, high-frequency PWM controllers for telecom and server power applications demanding tight deadtime control and robust fault handling.

FAQ

What is the primary purpose of the ISL6745EVAL1Z?

The ISL6745EVAL1Z is an evaluation board designed exclusively to demonstrate and validate the functionality of the ISL6745 double-ended PWM bridge controller IC. It provides a fully assembled, tested reference design enabling engineers to verify deadtime control, soft-start behavior, overcurrent response, and thermal shutdown in half-bridge and full-bridge converter topologies before committing to custom PCB layout.

Does the ISL6745EVAL1Z include the ISL6745 IC?

Yes, the ISL6745EVAL1Z board integrates the ISL6745AU IC in its 10-lead MSOP package, mounted with proper decoupling, gate drive routing, and thermal management per the datasheet recommendations. The board ships with the IC pre-soldered and ready for immediate functional testing.

Can the ISL6745EVAL1Z be used for full-bridge converter testing?

Yes, the ISL6745EVAL1Z supports full-bridge converter validation using its dual complementary outputs (OUTA/OUTB), configurable deadtime via CT/RTD components, and integrated overcurrent detection. The board's layout accommodates external high-side and low-side MOSFETs or driver stages required for full-bridge implementation.

What overcurrent protection features are validated on the ISL6745EVAL1Z?

The ISL6745EVAL1Z validates the ISL6745's delayed overcurrent shutdown with 50µs retriggerable timer, soft-start capacitor discharge-based fault latching (3.9V threshold), and automatic hiccup-mode restart when SS voltage drops to 0.27V. These behaviors are observable via test points and LED indicators on the board.

Is thermal protection verified on the ISL6745EVAL1Z?

Yes, the ISL6745EVAL1Z confirms the ISL6745's internal thermal shutdown at 145°C junction temperature and 130°C clear threshold, with ~15°C hysteresis. Board-level thermal monitoring and forced-air or load-induced heating tests validate safe shutdown and recovery without latch-up or parameter drift.