Renesas Unveils Industry’s Highest Performance 80V Bidirectional Buck-Boost and Dual-Phase Buck DC/DC Controllers

TOKYO, Japan ― Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced semiconductor solutions, today announced a pair of innovative 80V DC/DC controllers that support the extra voltage margin needed for data center servers, 48V telecom and rugged industrial equipment.

The ISL81801 buck-boost controller acts like a “UPS on a chip” by enabling bidirectional current flow (forward or reverse) using constant-voltage and constant-current regulation. This allows a battery or supercapacitor to be charged and discharged using a single controller and power path. The ISL81801’s combination of the industry’s highest 80V buck-boost switching frequency (600 kHz) and smallest package (5mm x 5mm) lets designers create ultra-compact, high-density power solutions. Its wide 4.5V to 80V range is perfect for many common applications, including 48V motor drives, telecom, industrial battery backup systems, and solar power.

The ISL81802 is a single-chip, 80V dual-phase synchronous buck controller with integrated drivers. It is the industry’s only 80V buck controller capable of 1MHz switching frequency, enabling the use of small power supply inductors to improve power density. For higher power applications, multiple ISL81802s can be paralleled and interleaved with best-in-class transient response. The ISL81802 can generate either two independent outputs, or a single high-current output, allowing creative power supply engineers tremendous flexibility and IP re-use across platforms. Additionally, the capability to supply either a constant output voltage or a constant current opens up a wide array of end-user applications, ranging from LED drive to powering blowers to maximize airflow in dense data center systems.

“The new 80V ISL81801 joins the popular 60V ISL81601 and 40V ISL81401 bidirectional buck-boost controllers that team with our industry-leading MCUs, power and analog portfolio, offering customers a family of choices for optimizing battery health and power use,” said Philip Chesley, Vice President of the Industrial and Communications Business Division at Renesas. “Leveraging Renesas’ proprietary modulation scheme and algorithms allows the highly integrated ISL81801 and ISL81802 to achieve the highest reliability performance, and the ability to react quickly to transient loads with a minimum number of BOM components.”