Altera Device-Specific Power Delivery Network Instrukcja Użytkownika

Device-Specific Power Delivery Network (PDN) Tool2.0 User Guide2015.03.06UG-01157SubscribeSend FeedbackThis user guide provides a brief overview of th

The available options are:• " " — Device rail does not connect to the power group.• x — Device rail connects to the power group.• x/related—

The Die Noise Tolerance parameter has a pull-down menu with the following options:• Calculate• OverrideSome PDN tool variants allow you to add data fo

1. Select the Plane_Cap tab in the PDN tool 2.0.2. Set the parameters to match your system, and notice that the Total planar capacitance and Totalshee

Figure 6: Results Summary Section of the System_Decap TabRecommended Flow for Deriving Decoupling for FPGA System using the System_Decap TabTo use the

Figure 7: Stackup TabStackup DataThe Stackup Data section is where you enter board dimension data and other parameters, such as boardstackup settings,

Table 4: Full Stackup ButtonsButton Label DescriptionConstruct Stackup Populates the Full Stackup section to the number of layersdefined in the Stacku

Figure 8: BGA_Via TabThe values in the Unit column indicate a unit value per one pair.Enter the layout-specific information such as via drill diameter

Figure 9: Plane_Cap TabEnter the design specific information such as plane dimensions, plane configuration and the dielectricmaterial used in the Plan

Figure 10: Cap Mount TabThe capacitor mounting calculation is based on the assumption that the decoupling capacitor is a two-terminal device. The capa

Figure 11: X2Y_Mount TabEnter all the information relevant to your layout in the X2Y CAP Mounting Inductance table. The toolthen provides a mounting i

The device families supported by the Altera device-specific PDN tool 2.0 are shown at the top of theRelease Notes tab and they include:• Arria® 10• Ar

Figure 12: Library TabYou can change each of the default values listed in the respective sections to meet the specific needs ofyour design.Two-Termina

• 0201• 0402• 0603• 0805• 1206You also have the option to either modify the default values or enter your own commonly used customvalues in the Custom

design. You can choose a Low value of effective spreading inductance if you have optimally designed yourPDN Network. Optimum PDN design involves imple

Figure 13: Enlarged_Graph TabDesign PCB Decoupling Using the PDN Tool 2.0PCB decoupling keeps PDN ZEFF smaller than ZTARGET with the properly chosen P

In the pre-layout phase of the design cycle when you do not have specific information about the boardstack-up and board layout, you can follow these i

1. Enter the ESR, ESL, and Lmnt values for the capacitors listed in the Custom field.2. Enter the effective BGA via (loop) parasitics for the power su

Figure 15: Enlarged Plot of ZEFFThe design is a decoupling example for a 10AX115R_F40 VCC power rail. Assume that the minimumvoltage supply is 0.9 V,

The power regulators must be able to supply the total combined current requirements for each load on thesupply, but the decoupling capacitor selection

Realistic tool entry can make decoupling easier to achieve. The following factors affect the calculation ofZTARGET:• An increase in dynamic current re

For first order analysis, the VRM can be simply modeled as a series-connected resistor and inductor asshown above. The VRM has a very low impedence an

To accurately calculate the ZTARGET for any power rail, you must know the following information:• The maximum dynamic current change requirements for

Rail Name (1)Voltage (V) Die NoiseTolerance (%)Dynamic CurrentChange (%)DescriptionVCCERAM 0.95 5 50 Programmable PowerTech AuxVCCBAT 1.2/1.5/1.8 5 10

FEFFECTIVEAs previously illustrated, a capacitor reduces PDN impedance by providing a least-impedance routebetween power and ground. Impedance of a ca

Tab DescriptionSystem_Decap The principal tab that allows you to decouple your system. Itdisplays by default when you launch the application. This tab

Device Selection Section1. Select the Family/Device using the pull-down list.2. Select your device from the Available Devices pull-down list.3. Select

Figure 5: Power Rail Data and Power Sharing Scheme SectionThis configuration is an example of how this section of the spreadsheet should look. Every d