ISL81801EVAL1Z Renesas

Users Manual ISL81801EVAL1Z Evaluation Board The ISL81801EVAL1Z evaluation board (shown in Figure 5) features the ISL81801, a 80V high voltage synchronous buck-boost controller that provides external soft-start, independent enable functions, and integrates UV/OV/OC/OT protection. A programmable switching frequency ranging from 100kHz to 600kHz helps to optimize the inductor size while the strong gate driver delivers up to 20A for the buck-boost output. Key Features Wide input range: 9V to 80V Bi-directional operation High light-load efficiency in pulse skipping DEM operation Programmable soft-start Optional DEM/PWM operation Optional CC/HICCUP OCP protection Supports pre-bias output with soft-start PGOOD indicator OVP, OTP, and UVP protection Back biased from output to improve efficiency Specifications The ISL81801EVAL1Z evaluation board is designed for high current applications. The current rating of the ISL81801EVAL1Z is limited by the FETs and inductor selected. The ISL81801EVAL1Z electrical ratings are shown in Table 1. Table 1. Electrical Rating Parameter Rating Input Voltage 9V to 80V Switching Frequency 200kHz Output Voltage 12V Output Current 10A OCP Set Point Minimum 11A at ambient room temperature Ordering Information Part Number Description ISL81801EVAL1Z High Voltage BUCK-BOOST Controller Evaluation Board Related Literature For a full list of related documents, visit our website: ISL81801 device page R12UZ0082EU0100 Rev.1.00 Page 1 of 17 May.6.20ISL81801EVAL1Z VIN FB IN VOUT VDD BOOT1 VDD PGND UG1 VCC5V PHASE1 IMON IN ISL81801 TQFN LG1/ PWM MODE IMON OUT SGND LG2/ PLL COMP OC MODE RT/SYNC PHASE2 SS/TRK UG2 COMP VDD FB OUT BOOT2 Figure 1. ISL81801EVAL1Z Block Diagram R12UZ0082EU0100 Rev.1.00 Page 2 of 17 May.6.20 CLKOUT BSTEN DITHER CLKEN OV EN/UVLO PGOOD EXTBIAS VIN CS+ ISEN- ISEN+ CS-