The PMBus SupIRBuck voltage regulators from Infineon Technologies are fully integrated and highly efficient DC-DC regulators with I²C/PMBus interface. The integrated PWM controller, MOSFETs and Bootstrap diode make them space-efficient solutions, providing accurate power delivery for low output voltage and high current applications. The programmable digital interface with remote testing using telemetry, benefits customers with up to 90 percent reduced design and test times – allowing significantly shorter time-to-market. Additionally, the highly integrated devices further reduce the board space by up to 50 percent compared to conventional two-chip solutions.
The SupIRBuck voltage regulators are ideal for applications in data centers, network storage, wireless infrastructure, mass computing or industrial automation. The devices can be comprehensively configured via PMBus and the configuration stored in internal memory. In addition, 75 PMBus commands allow precise run-time control, fault status monitoring and telemetry of parameters like V in, V out, I out, T or P out. The new synchronous buck regulators can also operate as a standard analog regulator without any programming and can provide current and temperature telemetry in analog format.
Infineon offers the IR38060 with an output current of 6 A in a PQFN5x6 package. IR38062, IR38063 and IR38064 provide 15 A, 25 A and 35 A respectively in PQFN5x7 packages. The devices are specified for the industrial temperature range of -40 °C to +125 °C. The voltage regulators support a high switching frequency of up to 1.5 MHz and high telemetry accuracy (I out +/- 5 percent). The accuracy of the reference voltage is specified with 0.5 percent.