Digitally-Programmable Quad-Output PMIC for FPGAs, SoCs, and DSPsDecember 22, 2014 by Jeff Shepard
Exar Corporation today introduced the XR77129, a quad-output programmable universal power management IC (PMIC) with an input operating voltage range of 6V to 40V. Its patented control architecture is well-suited for 40V inputs using a 17-bit wide PID voltage mode VIN feed forward architecture. This controller offers a single-input, quad-output, step-down switching regulator controller with integrated gate drivers and dual LDO outputs. It can also monitor and dynamically control and configure the power system through an I2C interface. Five configurable GPIOs allow for fast system integration for fault reporting and status or for sequencing control.
The XR77129 is quickly configured to power nearly any FPGA, SOC or DSP system through the use of Exarâ€™s design tool, PowerArchitectâ„¢ and programmed through an IÂ²C based SMBus compliant serial interface. PowerArchitect 5.2 has been upgraded to support the additional capabilities of the XR77129 including output voltage ranges beyond the native 0.6V to 5.5V with the use of external feedback resistors. The XR77129 wide input voltage range, low quiescent current of 450uA (standby) and 4mA (operating) make it suited for a wide range of systems including 18- to 36-Vdc, 24-Vdc or rectified ac systems used in the industrial automation and embedded applications.
â€œThe XR77129 Universal PMIC brings a wide range of capabilities to industrial embedded designs not available before,â€ said James Lougheed, Exarâ€™s vice president, power management products. â€œThe dynamic control, configurability and monitoring of Exarâ€™s programmable power solutions give industrial system designers capabilities to solve unique and difficult power conversion challenges.â€ The XR77129 is available now in a RoHS compliant, green/halogen free space-saving 7mm Ã— 7mm TQFN and is priced at $9.95 in 1000-piece quantities.