Product category:
Power Supply ICs and Controllers
News Release from: Intersil | Subject: ISL6306/07 family
Edited by the Electronicstalk Editorial
Team on 01 February 2006
PWM ICs add loadline and overcurrent
protection
Intersil's ISL6306/07 family addresses all VR11 CPU power requirements in desktop, server and embedded systems.
Intersil's ISL6306/07 family addresses all VR11 CPU power requirements in desktop, server and embedded systems The PWM (pulsewidth modulation) controllers are the industry's first with integrated loadline and overcurrent protection (OCP) temperature compensation, enabling the designer to maintain the same current limit threshold over temperature without any increase in external components
This article was originally published on Electronicstalk on 8 Jan 2001 at 8.00am (UK)
Related stories
Ultra-low-power MOSFETs prolong battery life
Intersil has launched its advanced new DenseTrench power MOSFET family of discrete power devices designed for higher-efficiency low-voltage power switching applications.
Programmable up-converter simplifies basestations
Intersil has added a new highly integrated quad up-convertor to its CommLinkT family of digital radio ICs for fixed basestation applications.
Additionally, Intersil is sampling the ISL6326/27 VR11 PWM controllers that are drop-in enhancements to the fully released ISL6306/07 family.
Due to a proprietary, dual-edge PWM architecture that is pin-compatible with the ISL6306/07 these enable significant bulk output capacitor reduction for further system cost reductions.
The ISL6326/27 enables the highest performance/price ratio VR11 CPU core regulator.
Further reading
Intersil and Sony develop new wireless TV solution
Intersil has worked with Sony to develop Point Co-ordination Function (PCF) technology based on Intersil's latest Prism 2.5 wireless LAN chipset solution.
Wireless LAN technology for the workplace
Intersil is introducing a new brand of wireless products called Prism/work specifically designed to meet the growing need for wireless LANs in the workplace.
Rad hard power-up microprocessor reset circuit
Intersil has introduced a new radiation hardened (rad hard) power-up microprocessor reset circuit.
The ISL6306/07 family and Intersil FET drivers provide the control and switching functions for VR11 CPU core multiphase buck DC/DC convertors on desktop, workstation, server, and industrial PC motherboards, also VRMs, point-of-load (POL) applications and DC/DC convertors.
The devices feature two- to six-phase operation for flexible voltage regulator design.
The VR11 PWM controllers have the industry's highest accuracy.
The ISL6306, ISL6307 family controls VR11 microprocessor core voltage regulation by driving up to six synchronous-rectified buck channels in parallel.
The ISL6306 is optimised for desktop and embedded systems, whereas the ISL6307 family is optimised for servers and voltage regulator modules (VRMs).
The multiphase buck convertor architecture uses interleaved timing to multiply channel ripple frequency and reduce input and output ripple currents.
Lower ripple results in fewer components, lower component cost, reduced power dissipation, and smaller implementation area.
Microprocessor loads can generate load transients with extremely fast edge rates.
This family features a high bandwidth control loop and ripple frequencies up to 4MHz to provide optimal response to transients.
Today's microprocessors require a tightly regulated output voltage position versus load current (droop).
The ISL6306/07 family senses current using patented techniques to measure the voltage across the on-resistance of the lower MOSFETs during their conduction intervals, and DCR (direct current resistance) of the output inductor when current flows through the inductor.
Current sensing provides the needed signals for precision droop, channel-current balancing, and overcurrent protection.
A programmable internal temperature compensation function is implemented to effectively compensate for the temperature coefficient of the current sense element.
A unity gain, differential amplifier is provided for remote voltage sensing, and any potential difference between remote and local grounds can be completely eliminated using the remote sense amplifier.
Eliminating ground differences improves voltage regulation and protection accuracy.
The ISL6326/27 are drop-in enhancements to the ISL6306 and the ISL6307, respectively.
The ISL6306 is available now in a 40-lead QFN package, and the ISL6307, ISL6307A, and the ISL6307B are available in a 48-lead QFN package.
The ISL6326 and ISL6327 are sampling now.
• Intersil: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
