Output Voltage Requirements

dependent upon the selection of the bulk capacitors, ceramic capacitors, power plane routing and the tuning of the PWM controller’s feedback network. This analysis can be done with LGA771-V2 VTT tool impedance testing or through power delivery simulation if the designer can extract the parasitic resistance and inductance of the power planes on the motherboard along with good models for the decoupling capacitors.

Measured power delivery impedance should be within the tolerance band shown in Figure 2-3. The tolerance band is defined for the VTT impedance measurement only. For load line compliance, time domain validation is required and the VR tolerance band must be met at all times. Above 500 kHz, the minimum impedance tolerance is not defined and is determined by the MLCC capacitors required to get the ESL low enough to meet the load line impedance target of the FBREAK frequency. At 700 kHz, the ZMAX tolerance drops to the load line target impedance. Any resonance point that is above the ZMAX line needs to be carefully evaluated with the time domain method by applying transient loads at that frequency and looking for VMAX or VMIN violations. Maintaining the impedance profile up to FBREAK is important to ensure the package level decoupling properly matches the motherboard impedance. After FBREAK, the impedance measurement is permitted to rise at an inductive slope. The motherboard VR designer does not need to design for frequencies over FBREAK as the Intel Microprocessor package decoupling takes over in the region above FBREAK.

Each of these design elements should be fully evaluated to create a cost optimized solution, capable of satisfying the processor requirements. Experimental procedures for measuring the Z(f) profile will be included (shortly) in the next revision of the EVRD_VRM11_0_LL_dVID LGA771_775-V2 VTT Tester-UG.pdf Test Methodology User’s Guide using the VTT. Additional background information regarding the theory of operation is provided in Appendix A.

Figure 2-3. Power Distribution Impedance vs. Frequency

Z LL Max

Ztarget = Z LL

Z LL Min

Zone 1

Zone 2

PWM Droop control

Output Filter

& compensation BW

Bulk & MLCC

 

Zone 3

 

Inductive effects

 

MLCC ESL +

 

Socket

VR BW

Hz

Fbreak

500 kHz

 

700 kHz

Notes:

1.Zone 1 is defined by the VR closed loop compensation bandwidth (VR BW) of the voltage regulator. Typically 30-40 kHz for a 300 kHz voltage regulator design

2.Zones 2 & 3 are defined by the output filter capacitors and interconnect parasitic resistance and inductance. The tolerance is relaxed over 500 kHz allowing the VR designer freedom to select output filter capacitors. The goal is to keep Z(f) below ZLL up to FBREAK (2 MHz) and as flat as practical, by selection of bulk cap values, type and quantity of MLCC capacitors. The ideal impedance would be between ZLL and ZLLMin, but this may not be achieved with standard decoupling capacitors.

315889-002

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Intel 315889-002 manual Vr Bw
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315889-002 specifications

The Intel 315889-002 is a highly regarded processor that has made significant contributions to the computing landscape. As part of Intel's dedicated line of CPUs, this model is engineered to deliver robust performance and efficiency for a range of applications, from personal computing to enterprise solutions. Features of the Intel 315889-002 include its multi-core architecture, which allows for better multitasking capabilities. With multiple cores working simultaneously, users can run multiple applications without experiencing noticeable lag, leading to a smoother overall experience.

One of the standout technologies incorporated in the Intel 315889-002 is Intel Turbo Boost Technology. This technology intelligently increases the processor's clock speed to enhance performance when required while ensuring energy efficiency during lighter loads. This feature is particularly beneficial in environments where performance needs can fluctuate, such as in gaming or intensive data analysis.

The processor supports a wide variety of instruction sets, enhancing its compatibility with various software and applications. Additionally, it runs on a highly efficient microarchitecture that optimizes processing cycles, reducing power consumption and heat generation. This is crucial not only for maintaining system stability but also for prolonging the lifespan of the hardware.

Another notable characteristic is its built-in security features, including Intel Software Guard Extensions (SGX) which create isolated execution environments for sensitive operations. This is particularly important in today's digital age, where data security is a top priority for both individuals and organizations.

The Intel 315889-002 is also equipped with Integrated Graphics, which offloads graphical tasks from the CPU, enabling better performance in applications that require visual rendering without needing a dedicated graphics card. This feature is ideal for users who require decent graphics capabilities without the added expense of additional hardware.

Overall, the Intel 315889-002 stands out as a well-rounded processor that combines performance, efficiency, security, and versatility. Its advanced technologies and thoughtful design make it suitable for a wide variety of users, from gamers to professionals, seeking reliable and efficient computing solutions.
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