Intel® G41 Express Chipset

The Intel® G41 Express Chipset, when combined with the Intel® Core™2 processor family, delivers new technologies and innovative capabilities for digital home consumers. With major advancements in video, graphics, responsiveness and scalability, the Intel® G41 Express Chipset enables scalability and performance for everyday computing.

The Intel® G41 Express Chipset, with the Intel® Graphics Media Accelerator X4500 (Intel® GMA X4500), includes built-in support for smooth high-definition video playback without the need for add-in video cards or decoders. Intel® GMA X4500 comes with Intel® Clear Video Technology, a combination of video processing hardware and software technologies designed to enhance the visual experience.

In addition to video, the Intel® G41 Express Chipset delivers optimized 3D graphics performance and support for Microsoft DirectX* 10, Shader Model* 4.0, and OpenGL* 2.0. These graphics enhancements deliver the performance and compatibility you need for entertaining, everyday gameplay for the most popular game titles. The Intel® G41 Express Chipset includes support for the most PC operating systems, including Windows Vista*.

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Some of motherboard with G41 chipset :

•  ECS G41T-M6
•  P5G41T-M LX

Intel Chipset G31

Intel G31 chipset is an Intel chipset that supports Intel Core 2 Duo and the Intel Quad Core. This G31 Chipset using 45nm processor technology. This chipset works with 1333MHz system bus, DDR2 memory technology and support for Windows XP, Vista and 7.

Features and benefits :

• 1333/1066/800 MHz system bus supports Intel Core 2 Duo processor and the Intel Quad Core.
• PCI Express 1.1 interface provides a bandwidth of 8GB / s to support the graphical display
• Intel Fast Memory Access, updated Graphics Memory Controller Hub (GMCH) backbone architecture improves system performance by optimizing usage of available memory bandwidth and reduces latency access memory.
• Support dual-channel DDR2 provide up to 12.8GB/s (DDR2 800 dual 6.4GB/s) of bandwidth and 4GB memory addressability fo faster system responsiveness and support 64-bit computing.
• Intel Flex Memory Technology, facilitates easier upgrades by allowing different memory sizes to be filled and remain in dual-channel mode.
• Intel Graphics Media Accelerator 3100, 3D enhancements enable greater flexibility and scalability and improved realism with support for Microsoft DirectX * 9.0c Shader, Model 2.0 OpenGL * 1.4. Intel ® Graphics also support the highest level of Windows Vista * Aero experience.
• Intel High Definition Audio, integrated audio support enables premium digital surround sound and provides advanced features such as multiple audio streams and jack re-tasking.
• Intel Matrix Storage, by adding a second hard drive, providing quick access to digital, video, photos and data files with RAID 0, 5 and 10, and greater data protection against the failure of a hard disk drive with RAID 1, 5 and 10.

Chipset System Diagram :


 

Some of motherboard with G31 chipset :

• ECS G31T-M7 
• ASUS P5KPL-CM

IC MOSFET Driver RT9605B

The RT9605B is a high-frequency, triple-channel synchronous MOSFET driver-specific repair money designed to drive six-power N-MOSFETs. This IC promoted to pair with Richtek's multiphase buck PWM controller family for high-density power supply implementation like RT8802A. Driver output can RT9605B efficiently switch power MOSFETs in the frequency 300kHz normally. You can use APM2518N and APM2558N.

Operate at higher frequencies must take into account Carefully heat dissipation. Each driver RT9605B able to move a load in 30/40ns 3NF up / down time with small propagation delay from input transition power MOSFET gate. The device implements bootstrap on top with only an external gate capacitors and diodes are required. This reduces the circuit complexity and allows the use of higher performance, cost effective N-MOSFET. All drivers incorporate adaptive shoot-through protection to prevent the upper and lower MOSFET from performing simultaneously and shorting input supply. The RT9605B also detects errors conditions at the time of initial start-up before a multi-stage PWM controller takes control. As a result, input supply will latch into the shutdown state. The RT9605B come for a small footprint package with VQFN-24L 4x4 package.

Features

• Drive Six N-Channel MOSFETs for 3-Phase Buck PWM Control
• Adaptive Shoot-Through Protection
• Support High Switching Frequency
• Fast Output Rising/Falling Time
• Propagation Delay 40ns
• Tri-State Input for Bridge Shutdown
• Upper MOSFET Direct Short Protection
• Small 24-Lead VQFN Package
• RoHS Compliant and 100% Lead (Pb)-Free

IC Multi-Phase PWM Controller RT8802A

RT8802A is an IC Multi-Phase PWM Controller that include a  2/3/4/5-phase synchronous buck controller specifically designed to power Intel/AMD next generation microprocessors. It's used in an internal 8-bit DAC that is identified by VID code of microprocessor directly. RT8802A generates VID table that conform to Intel® VRD10.x and VRD11 core power with 6.25mV increments and 0.5% accuracy.RT8802A adopts innovative time-sharing DCR current sensing technique to sense phase currents for phase current balance, load line setting and over current protection. Using a common GM to sense all phase currents eliminates offset and linearity variation between GMs in conventional current sensing methods. As sub-milli-ohm-grade inductors are widely used in modern motherboards, slight offset and linearity mismatch will cause considerable current shift between phases. This technique ensures good current balance in mass production.

 

This IC use together with IC RT9605B in a motherboard and some of mosfet n-channel like APM2518N and APM2558N.

Features :
• Power Supply +5 V
• 2/3/4/5-Phase Power Conversion with Automatic Phase Selection
• 8-bit VID Interface, Supporting Intel VRD11/VRD10.x and AMD K8, K8_M2 CPUs
• VR_HOT and VR_FAN Indication
• Precision Core Voltage Regulation
• Power Stage Thermal Balance by DCR Current Sensing
• Adjustable Soft-start
• Over-Voltage Protection
• Adjustable Frequency and Typical at 300kHz per Phase
• Power Good Indication
• 40-Lead VQFN Package
• RoHS Compliant and 100% Lead (Pb)-Free