Intersil Corp. announced two new PMBus-compatible, single-phase digital hybrid dc/dc controllers that provide point-of-load (POL) conversions for FPGAs, DSPs, ASICs, processors, and general-purpose system rails. The ISL68200 with integrated MOSFET drivers and ISL68201 with PWM output simplify power supply designs for data center routers, servers, and storage, as well as wireless infrastructure equipment. The ISL68200 can drive external MOSFETs directly, while the ISL68201 is paired with Intersil's DrMOS (Integrated Driver and MOSFET) power stage to create a complete voltage regulator solution.
The ISL68200 and ISL68201 digital hybrid controllers provide the performance of Intersil's R4 control loop with the benefits of a digital PMBus interface. Both controllers are fully configurable with external pin-strap resistors, which provide a familiar engineering design flow and eliminate the need for non-volatile memory. Designers can use the PMBus interface and Intersil's PowerNavigator GUI software to read back Vin, Vout, Iout and temperature telemetry, monitor fault reporting bits, and conduct on the fly changes to the Vout setpoint. For systems where PMBus functionality is not required, the interface can be used to debug the power supply during board bring-up, and then left disconnected in final production.
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