Datasheet > AN6092

AN6092

更新时间： 2023-12-20 18:45:52

品牌	Logo	应用领域
莱迪思 - LATTICE		/
页数	文件大小	规格书
17页	2930K
描述
Implementing VID Function with Platform Manager 2

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AN6092 数据手册

Implementing VID Function with Platform Manager 2

The Platform Designer software tool is used to define Profile0 which also functions as the VID Setpoint. The soft-

ware tool is also used to configure profile select signals TRIMy_P0 / TRIMy_P1, the closed loop trim enable

TRIMy_CLTE, choose Trim configuration mode and DAC output enable TRIMy_OE signal. The VID operation uses

I²C interface to overwrite the VID setpoint (Profile0) depending upon the VID code, the ASC I2C Write Feature

(used by the VID module) is also configured through Platform Designer. For further details on the TrimCell refer to

L-ASC10 Data Sheet and Platform Manager 2 Data Sheet.

Interfacing Hardware Management Controller to DC-DC Converters

VID implementation requires interfacing the L-ASC10 of the Hardware Management controller to the DC-DC con-

verter with a resistor network. Figure 3 shows an example resistor network between the L-ASC10 and the DC-DC

converter. The values of these resistors depend on the type of DC-DC converter used and its operating voltage

range.

Figure 3. Typical Interface Between L-ASC10 and a DC-DC Converter

L-ASC10

DC-DC

In+

Vmon+

Out+

DAC

Trim

Out-

Vmon-

In-

The calculation to determine the values of the resistors R1, R2, and R3 is performed automatically in the Platform

Designer tool. Prior to performing the calculation, the Platform Designer tool is used first to create a DC-DC con-

verter model and then associate the DC-DC model with the TrimCell.

This section describes interface within the Platform Designer tool to build DC-DC converter model and maintain a

library for the models.

As highlighted in Figure 4, from the main window, select

Global view and select the ASC Options tab. On the

right side, under the Global ASC Options section, select DC-DC Options.

Figure 4. DC-DC Options in Platform Designer Tool

1 234 5 6 7...17

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