Globalpress: Exar claims breakthrough
Exar claims a breakthrough for its Quad Channel Digital PWM/PFM programmable power management system which, says the company, is the world’s lowest power consumption, programmable power management system.
The XRP7724 is the first digital controller that can be considered for portable or other power sensitive applications due to the significant reduction in operating current, says Exar.
Patented technology allows transient performance equivalent to the fastest comparator based analogue technologies ensuring output capacitor size is kept to a minimum.
Also included are 3 PSIOs (Power Switch IO) for driving load disconnect MOSFETs, providing another level of Power Management functionality.
The XRP7724 is ready for the next generation of FPGAs and Processors using
advanced energy management voltage control by providing output voltage
resolution programming as fine as 2.5mV.
Each output voltage can be programmed from 0.6V to 5.5V without the need for any external components.
The device offers a complete sequencing solution for each buck converter
Switching frequency is 106kHz to 1.2MHz with the ability to set each
channel independently, a useful feature for 2 stage conversion. The wide
programmable range of DPWM switching frequency allows for optimsation of
efficiency and component size.
An SMBus compliant I2C interface is provided to program the device and
facilitate communication with the host for: fault reporting and handling,
monitoring, voltage repositioning and setting other programmable features.