"The challenge for gamers and enthusiasts has always been how to extend system performance to the absolute maximum without pushing it too far and initiating a system shutdown," said Larry Spaziani, CHiL's Vice President of Marketing. "To achieve that goal they need highly precise management of overclocking functions. The CHL8318's accuracy and range enables users to have complete overclocking control.
"Using its unique 8-phase architecture and innovative new digital controls, the CHL8318 controller gives users an unprecedented ability to monitor and control CPU operating voltage, clock frequency and thermal conditions directly through the system BIOS and, in the process, push their processors to entirely new levels of performance. Moreover, our controller enables PC enthusiasts to significantly increase power efficiency in idle or standby-modes to meet and exceed recommended energy conservation guidelines. These savings are especially important for gamers who frequently keep their machines turned on 24/7 regardless if the machine is in use."
Precise Control Maximizes Overclocking
The CHL8318 is an Intel VR11.1-compliant digital multi-phase buck controller that supports up to eight programmable interleaved synchronous buck phases. The device allows users to monitor and adjust currents phase-to-phase to maximize CPU performance and minimize heat. To address the fast transients in today's VR11.1-compliant CPU designs, the CHL8318 adds a highly optimized analog-to-digital converter architecture capable of a very fast transient response of > 2000 A/µs.
Custom digital overclocking features allow gaming and enthusiast users to extend voltage range up to 2.3V through the system BIOS via a SMBus interface. VID scaling and offset controls offer extremely fine voltage regulation of 6.25 mV with +/-19mV accuracy within the VID table and +/-25 mV accuracy when VID > 1.6V. Embedded load line controls avoid system shutdown at low voltage by adjusting the load line slope when current goes high. Importantly, none of the gaming features require additional external components.
To control the additional heat generated by its overclocking functions, the CHL8318 also adds advanced thermal management capabilities. Three external temperature sensors supply comprehensive monitoring and control of phase current to balance temperature variations. A VR HOT feature communicates heat levels to the CPU and an OTP feature automatically shuts down VR PWM signals when the operating temperature exceeds a second threshold. The controller also offers a thermal balancing algorithm that automatically balances current across the controller's eight phases during both DC and transient operation to ensure system continuity, improve power efficiency and maximize reliability. With these features users can easily monitor and adjust current from phase-to-phase to maximize gaming capabilities, heat dissipation, and optimize power efficiency.
The CHL8318's extensive digital intelligence also helps deliver over 90 percent power efficiency across virtually all loads. By digitally controlling current across eight programmable synchronous phases, gamers can use the CHL8318 to optimize power efficiency at high load conditions. As current drops the CHL8318 offers dynamic phase control that turns off phases to further improve power efficiency. Finally, a patent-pending adjustable gate drive capability reduces MOSFET gate drive as current drops. These three new functions allow users to maximize power efficiency across high, mid and low load conditions.
Price and Availability
Specified across the 0 to 85°C range, the 8-phase CHL8318 controller is available in a Pb-free, 56-pin QFN package. The IC sells for $3.29 in 1K quantities.
About CHiL Semiconductor
Founded in 2006, CHiL Semiconductor develops high-performance, mixed-signal power management ICs primarily targeted at servers, personal computers and other high-volume computing market segments. CHiL devices tightly integrate digital technology, which provides a number of unique, intelligent features that precisely monitor and control the power management process, yielding significant gains in system power efficiency and performance, while reducing system design and complexity. For more information, please visit www.chilsemi.com.
Larry Spaziani CHiL Corporation 978-935-5223 Email Contact Matthew Quint Quint Public Relations 650 599-9450 Email Contact