Exar’s PowerXR Digital Power Solutions

   Exar’s PowerXR ICs integrate the best of both worlds; the low cost and flexibility of digital power control as well as the robust power capabilities of high performance analog power switches. PowerXR products reduce development time from weeks to hours, enabling a significant time-to-market advantage for system design engineers.
   Additionally, Exar’s Digital Power Studio™ is an easy to use software environment, empowering engineers to create complex sequencing schemes and power systems, and modify voltage, current or other parameters in seconds. 

PowerXR Family Features
• Three to four switching buck (step-down) controllers
   each with internal FET drivers
• Output voltages programmable from 0.9V to 5.1V
• Up to 6 (re)configurable GPIO pins
• Fully programmable via I²C interface
• Independent Digital Pulse Width Modulator (DPWM)
   channels with five coefficient PID control
• High Integration: elimination of external circuits and
   components required for compensation, parameter
   adjustment and interface
• Programmable DPWM frequency range (300 kHz
   to 1.5 MHz) enables efficiency and component size
   optimization
• Complete power monitoring and reporting
• Independently controlled start-up delay and ramp for
   each regulator
• Independently controlled soft-stop delay and ramp for
   each regulator with a programmable stop voltage
• Over-temperature protection (OTP) and Under Voltage
   Lockout (UVLO); per-channel over-current protection
   (OCP) and over-voltage protection (OVP)
• Built-in LDO (configurable to 3.3V or 5V) with overcurrent protection
• Non-volatile memory for system

APPLICATIONs
• Consumer - Set-Top Box (STB), IP Camera, Plasma
   Display Panel (PDP)
• Computing - Server, Storage Systems
• Industrial - Automatic Test Equipment, Point of Sale
• Medical Equipment
• Networking and Telecommunications Equipment,
   Ethernet Adapter cards