EVI-EM2COMIF datasheet(28/46 Pages) INTEL

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Data Sheet | Intel Enpirion Power Solutions: EM2130

Page 28

DAC

VFB

VTRACK

Set-Point

(Defined by lower input value)

Figure 10: VTRACK Circuitry

The following figures demonstrate ratio-metric and simultaneous sequencing of the output voltage, which

can be accomplished by applying an appropriate external voltage on the VTRACK pin. When using the

VTRACK feature, the sequencing will be ratio-metric as shown in Figure 12 if an external resistor network

is used at the VTRACK pin as shown Figure 10. If no external resistors are used, the output sequence is

simultaneous as shown in Figure 13.

In the event that a feedback divider is not required, (such as when VOUT ≤ 1.4V) but the tracking voltage

applied to VTRACK is greater than 1.4V, then a 2kΩ resistor is required in series with the VTRACK pin to

minimize leakage current as shown in Figure 11.

In applications where a voltage divider is required on the output voltage, a voltage divider consisting of the

same values is also required for the VTRACK pin.

Figure 11:

VTRACK Sense Circuitry with Resistor Divider

Figure 12: VTRACK Sense Circuitry (Input > 1.4V)

Figure 13: Ratiometric Sequencing Using VTRACK

VTRACK

VOUT

12873

April 10, 2020

Rev I

EVI-EM2COMIF Datasheet(PDF) 28 Page - Intel Corporation