www.DataSheet4U.com
POWER MANAGEMENT Description
The SC2643VX provides a solution for microprocessor core voltage regul...
www.DataSheet4U.com
POWER MANAGEMENT Description
The SC2643VX provides a solution for microprocessor core
voltage regulation with up to 4 paralleled PWM channels. The solution can also be configured as 2, 3, or 4-phase form. This multi-phase buck regulator utilizes the phaseshift timing control to allow interleaved switching of the power switches. This architecture minimizes the core
voltage ripple and the input current ripple, which leads to optimized
voltage regulator design for power density, transient responses, and the thermal performances. To satisfy the highly dynamic nature of the modern microprocessors, the SC2643VX adopts peak current mode control topology which ensures wide control loop bandwidth and fast transient responses. The current mode control provides intrinsic phase current matching. The maximum ripple frequency is greater than 2.8MHz. One of the outstanding features of the SC2643VX is its
voltage regulation accuracy. Not only does it provide better than 0.5% set point accuracy, but also the accuracy to be fully compliant with stringent load line slope specifications mandated by the modern microprocessors. Lossless output current sensing ensures the regulator output
voltage is accurately positioned according to the load current condition, and an internal temperature compensation technology further enhances the performance of
voltage accuracy. The patented Combi-Sense TM topology is employed by SC2643VX. The
MOSFET Rds(on) and the output inductor winding r...