2013-02-18 Exar offers PoL conversion with minimum design time and Fully Programmable Power Management features.

Exar's PowerXR family of products combine digital power conversion control and monitoring technology with high performance analog circuitry in the industry’s leading portfolio of programmable power-management system solutions.

Exar offers an industry leading portfolio varied array of programmable power management system devices that are robust, flexible and economical. From Exar's PowerXR ICs to Exar's Power Architect™ software, the power supply needs of various engineering requirements are covered.

EXAR's 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


• Dynamic power system control
• Configurable fault management & system monitoring
• Reduced component count
• Programmable configurability reduces time to market
• Configurable and dynamic power conversion optimization
• Remote monitoring & field serviceability
• Anti-tampering security
• Improved reliability with reduced passive components
• Differentiating product with custom intelligent features such as system energy monitoring or product serial traceability
• Patented technology allows transient performance equivalent to the fastest comparator based analog technologies  ensuring output capacitor size is kept to a minimum.
• 3 PSIOs (Power Switch IO) for driving load disconnect MOSFETs, providing another level of Power Management functionality

Ideal for

• Portable or Power Sensitive applications
• Next generation FPGAs and Processors

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