“The XRP7724 dramatically expands the capabilities of the PowerXR family giving system architects increased design options, especially for the growing market of sophisticated mobile applications,” said Dave Matteucci, vice president, Power Product Unit. “PowerXR products clearly address customer requirements, offering the valuable benefits of programmable power in a cost-effective package.”
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 switchers. PowerXR products reduce development time from weeks to hours enabling a significant time-to-market advantage for system design engineers. Using the PowerArchitect™ design tool, engineers can easily modify voltage, current, GPIO or other parameters in seconds. Engineers can tweak design parameters throughout the design cycle, qualification into final test and even when deployed in the field.
Key Product Features
The XRP7724 offers a wide input voltage range (4.75V to 25V), and output range (0.6V to 5.1V), with a built-in Low-Drop Out regulator (LDO) for standby power, power sequencing capability, and integrated gate drivers. These power system ICs contain patented Digital Pulse Frequency Modulator (DPFM) with ultrasonic mode. The ICs contain an integrated LDO regulator that provides a fifth voltage supply, which can also be employed as a standby-voltage source and is fully configurable via an I²C interface for monitoring, control and management of DC/DC power conversion. The devices contain integrated gate drivers for the high-current outputs and up to six General Purpose Input/Output (GPIO) pins. Exar’s PowerArchitect software design tool enables designers to intelligently configure the power supply’s voltage setting and current thresholds, fault monitoring and response, soft start and active shutdown timing, and channel sequencing, phase shift management, and loop response, amongst other features. The ICs use a digital PID (proportional, integral, differential) control algorithm that performs full-digital loop control at switching frequencies to 1.5 MHz.