ISL78444EVAL1Z Renesas

Users Manual ISL78444EVAL1Z Users Manual: Evaluation Board Automotive Rev.01.00 Oct 2018USERS MANUAL ISL78444EVAL1Z R12UZ0034EU0100 Rev.01.00 Evaluation Board Oct 23, 2018 1. Overview The ISL78444EVAL1Z evaluation board is designed to provide a quick and comprehensive method for evaluating the ISL78444 100V 3A source, 4A sink half-bridge driver for driving the gates of two NMOS FETs in a half-bridge configuration. Two N-channel MOSFETs are included on the evaluation board to allow for the evaluation of a half-bridge driven load such as a DC motor or a synchronous switching regulator. The ISL78444 family of FET drivers is offered in a 14 Ld HTSSOP package enhanced with a thermal EPAD. It operates from a supply voltage of 8V to 18V DC with the capability of driving a high-side N-channel FET in a 70V half-bridge configuration. A unique tri-level PWM input allows control of both the high-side and low-side gate drivers with a single input. The mid-level state has both high-side and low-side sink drivers active to disable both MOSFETs. This is beneficial for multiphase DC/DC converters that require phase dropping or to implement asynchronous operation in a synchronous DC/DC converter. 1.1 Key Features 3A source and 4A sink NMOS gate drivers Internal level shifter and bootstrap switch for gate driver on high-side FET Up to 70V high-side gate drive reference 8V to 18V bias supply operation Single PWM input for high-side and low-side gate driver with tri-level for turning off both drivers Single resistor adjustable dead time from 35ns to 400ns 1.2 Specifications This board is optimized for the following operating conditions: V supply = 8V to 18V DD V supply input = 12V to 70V BRIDGE PWM switching frequency 10kHz to 1MHz Preset half-bridge dead time: 165ns with RDT = 10k, (adaptive dead time + programmable dead time) Peak gate drive current: 3A source and 4A sink 1.3 Ordering Information Part Number Description ISL78444EVAL1Z ISL78444EVAL1Z evaluation board 1.4 Related Literature For a full list of related documents, visit our website: ISL78424, ISL78434, ISL78444, ISL78224, ISL78226 product pages R12UZ0034EU0100 Rev.01.00 Page 2 of 15 Oct 23, 2018