Scalable digital controllers deliver 240A in 8 phases for data centre and industrial power
The ISL68300 with integrated MOSFET drivers and ISL68301 with PWM output simplify designing power supplies for data centre, wired and wireless communications, and factory automation equipment.
The ISL68300 can drive discrete external MOSFETs directly, while the ISL68301 pairs with Renesas’ smart power stages or DrMOS power stages to create a complete voltage regulator solution.
The digital controllers feature a high-speed current share bus that parallels up to eight controllers in an 8-phase 240A+ current share configuration. Both controllers implement Renesas’ digital ChargeMode control modulation, which responds to load transients in a single switching cycle, and provides an inherently stable control loop without requiring external compensation. This modulation architecture significantly reduces output capacitor requirements and minimizes Vout undershoot and overshoot.
“The scalability of the ISL68300 and ISL68301 single output digital controllers provide industry leading performance and support a wide range of load currents,” said Mark Downing, Vice President of the Core Power Solutions Division at Renesas Electronics following the acquistion of Intersil.
Engineers can use the PowerNavigator GUI to simplify power supply setup, sequencing, configuration and monitoring, including all device parameters and telemetry. Full schematic designs are completed in minutes, and the GUI with PMBus makes it easy to control the entire design and change features without soldering components or rework.
Both digital Controllers can parallel up to eight controllers in a single droop-less current sharing output with output voltages that range from 0.45V to 5.5V from an input voltage of 4.75V to 16V or 4.5V to 5.5V. They have 0.5% output voltage accuracy over line, load, and temperature and a switching frequency range of 200kHz to 1.0MHz. They include cycle-by-cycle inductor peak current protection with configurable fault protection for Vout under voltage (UV), over voltage (OV), Vin UV/OV, and temperature.
In a typical FPGA power supply, the ISL68300 and ISL68301 digital controllers provide single output 10A to 40A+ for auxiliary rails, DDR memory, and system rails.
The companion Renesas digital multiphase controllers use smart power stages to provide dual output 15A to 70A, or higher core power.
The ISL68300 with integrated driver optimized to work with discrete MOSFETs is available now in a 4mm x 4mm, 24-lead QFN package and priced at $2.60 in 1k quantities. Single-phase and 2-phase evaluation boards are available for $125.
The ISL68301 with PWM output for pairing with ISL99227B smart power stages or DrMOS power stages is available now in a 4mm x 4mm, 24-lead QFN package and priced at $2.26 in 1k quantities. Single-phase and 2-phase evaluation boards are available for $125.