Triple-Channel Universal PMIC Supports Low Power FPGA and SoC Processors

• Exar's first Universal PMIC with three integrated synchronous MOSFET power stages
  
  
• Board-space efficient solution supports broad range of FPGAs and SoC processors
  
  
• Configurable through I²C using PowerArchitect 4 design and configuration software

Exar Corporation announced the introduction of the XR77103 Universal PMIC, Exar's first Universal PMIC with three integrated synchronous MOSFET power stages. This integration results in an even smaller solution than was possible before, a tiny, 4 mm × 4 mm IC which delivers an easy-to-use power management solution for a broad range of FPGAs, SoCs, DSPs and video processors.

The XR77103 features an I²C interface allowing customers to control output voltage (from 0.8 V to 6 V), switching frequency (from 300 kHz to 2.2 MHz), power sequencing, and current limit. The XR77103 is supported by a new release of PowerArchitect 4 design and configuration software.

The XR77103 operates from a 4.5 V to 14 V input supply and all three outputs are designed for 2 A load currents with peak currents up to 3 A. Since the device employs a current mode control architecture, outputs can be easily paralleled to provide up to a total of 5 A allowing the XR77103 to power a range of low power processors. A selectable Pulse Skipping Mode (PSM) results in improved efficiency at light loads, a key feature in meeting standby energy requirements or extending battery life.

As the device supports up to a 2.2 MHz switching frequency and is packaged in a 4 × 4 mm QFN, it requires fewer and smaller external components, saving engineers valuable board space in their next design. This family also includes two versions of the XR77103 which offer a fixed set of features for designers not requiring the I²C interface. The XR77103ELB-A0R5 and -A1R0 are fixed at switching frequencies of 500 kHz and 1 MHz, respectively. Both products feature a 0.8 V, high accuracy reference (1%) and their output voltages are set by external resistors.

The XR77103ELB, XR77103ELB-A0R5 and XR77103ELB-A1R0 are available in RoHS compliant, green/halogen free, space-saving 4x4 QFN packages. Prices start at $1.95, $1.60 and $1.60, respectively, in quantities of 1,000.