The PT8100 Excalibur™ power modules are a family of high-output, high-efficiency, fully integrated switching regulators (ISRs), housed in a solderable 31-pin space-saving copper package.Modules are available for operation from either a 3.3V or 5V nominal input bus voltage. Each provides up to 40A of output current at output voltages as low as 0.8V. The output voltage is programmable via a 5-bit input code. The PT8100 series incorporates a state-of-the-art, 2-phase, multiple power path topology. This extends the output current range while providing superior transient response and input current ripple performance. The modules are designed for high-end computing and signal processing applications, both of which demand high output currents at low supply voltages. The modules have a number of standard features to facilitate system integration. These include short-circuit protection, thermal shutdown, standby (On/Off) control, and an output remote sense to compensate for voltage drop between the regulator and the load. In addition, the voltage programming codes are compatible with Intel’s® VRM specifications.