8.3.4.1 Immunity to SENSE Pin Voltage Transients

The TPS3890-Q1 is immune to short voltage transient spikes on the input pins. Sensitivity to transients depends on both transient duration and overdrive (amplitude) of the transient. Overdrive is defined by how much VSENSE exceeds the specified threshold, and is important to know because the smaller the overdrive, the slower the response of the outputs (that is, undervoltage and overvoltage). Threshold overdrive is calculated as a percent of the threshold in question, as shown in Equation 4.

Figure 17 to Figure 20 illustrate the glitch immunity that the TPS3890-Q1 has versus temperature with three different overdrive voltages. The propagation delay versus overdrive curves (Figure 13 to Figure 16) can be used to determine how sensitive the TPS3890-Q1 family of devices are across an even wider range of overdrive voltages.