Users Manual ISL8280MEVAL1Z Users Manual: Evaluation Board Industrial Analog and Power All information contained in these materials, including products and product specifications, represents information on the product at the time of publication and is subject to change by Renesas Electronics Corp. without notice. Please review the latest information published by Renesas Electronics Corp. through various means, including the Renesas Electronics Corp. website ( Users Manual ISL8280MEVAL1Z Evaluation Board 1. Overview The ISL8280MEVAL1Z evaluation board (shown in Figures 4 and 5) is designed for evaluating the ISL8280M. The ISL8280M is a single channel step-down, synchronous DC/DC power supply module that is capable of delivering up to 10A of continuous current. The proprietary Renesas R4 Technology control scheme has extremely fast transient performance, accurately regulated frequency control, and all internal compensation. The 2 ISL8280M includes an SMBus/PMBus/I C interface for module configuration, telemetry (V , V , I , and IN OUT OUT temperature) and fault reporting, and allows for easy R4 loop optimization that results in fast transient performance across a wide range of applications, which includes all ceramic output filters. The ISL8280M integrates the controller, all power components, and most passive components. The device requires only a few external components to operate, which significantly reduces design complexity and board space, and it optimizes for high power density applications without the need for airflow or a heatsink. The ISL8280MEVAL1Z evaluation board is a 3x3.4 inch six-layer FR4 board with 2oz. copper on all layers. The ISL8280MEVAL1Z operates from a single 4.5V to 15V wide input power rail and offers adjustable output voltages down to 0.5V and efficiencies of up to 95%. The ISL8280MEVAL1Z comes with placeholders for pin-strap resistors to program output voltage, PFM/PWM mode, temperature compensation (TCOMP), PMBus address, switching frequency (f ), AV gain, OCP retry/latchoff, ultrasonic PFM enable, soft-start ramp rate, RR SW impedance, and AV gain multiplier (1x or 2x). The ISL8280MEVALZ ships with the ZLUSBEVAL3Z (USB to PMBus adapter), which connects the evaluation board to a PC to activate the PMBus communication interface. The PMBus command set is accessed by using the Renesas PowerNavigator evaluation software from a PC running Microsoft Windows. The ISL8280MEVAL1Z can operate in Pin-Strap mode without needing the ZLUSBEVAL3Z adapter or PMBus communication. By default, the ISL8280MEVAL1Z is set to a 1V output voltage with a 400kHz switching frequency, 49 AV gain, and 200k RR. 1.1 Key Features Input voltage range: 4.5V to 15V, capable of delivering up to 10A of continuous current, and up to 95% conversion efficiency Adjustable output voltage: 0.5V to 5V with 1.5% load/line/temperature regulation with remote sense Proprietary Renesas R4 Technology Programmable V , PFM/PWM mode, TCOMP, PMBus address, f , AV gain, OCP retry/latchoff, ultrasonic OUT SW PFM enable, soft-start ramp rate, RR, and AV gain multiplier Monitor: V , V , I , temperature, switching frequency, duty cycle, and faults IN OUT OUT Startup into precharged load Dedicated enable pin and PGOOD indicator Comprehensive fault protection for high system reliability: over-temperature protection, output overcurrent and short-circuit protection, output overvoltage and undervoltage protection, open remote sense protection, input UVLO and power sequence, and fault reset Thermally enhanced 12mmx11mmx5.3mm HDA package Compatible with Renesas PowerNavigator software R12UZ0039EU0200 Rev.2.00 Page 2 of 36 Apr.8.19