EVAL-ADM1073MEB View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

EVAL-ADM1073MEB

Full-Feature −48 V Hot Swap Controller

Analog Devices 

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LOGIC INPUTS

Figure 46 shows assertion of the level-triggered SHDN signal

for 150 ms, causing the ADM1073 to shut down for this

duration.

Figure 46. Timing Waveforms Associated with a RESET Event

(Ch1 = GATE; Ch2 = SHDN; Ch3 = PWRGD; Ch4 = SPLYGD)

Figure 47 shows the assertion of the edge-triggered RESTART

signal, causing the ADM1073 to shut down for approximately

five seconds before restarting automatically.

ADM1073

KELVIN SENSE RESISTOR CONNECTION

When using a low-value sense resistor for high current

measurement, the problem of parasitic series resistance can

arise. The lead resistance can be a substantial fraction of the

rated resistance, making the total resistance a function of lead

length. This problem can be avoided by using a Kelvin sense

connection. This type of connection separates the current path

through the resistor and the voltage drop across the resistor.

Figure 48 shows the correct way to connect the sense resistor

between the SENSE and VEE pins of the ADM1073.

SENSE RESISTOR

CURRENT

FLOW FROM

LOAD

CURRENT

FLOW TO –48V

BACKPLANE

KELVIN SENSE TRACES

SENSE

VEE

ADM1073

Figure 48. Kelvin Sensing with the ADM1073

Figure 47. Timing Waveforms Associated with a RESTART Event

(Ch1 = GATE; Ch2 = RESTART; Ch3 = PWRGD; Ch4 = SPLYGD)

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