SLVAEW6 December 2020 TPS2661
- Trademarks
- 1Introduction
- 2Protection Required for Current Inputs in Analog Input Modules
- 3Typical Discrete Circuit for Protection of Current Input
-
4TPS26610 for Analog Current Loop
Protection
- 4.1 Current Input Protection with TPS26610
- 4.2 Accurate Current Limiting with TPS26610
- 4.3 Leakage Current of TPS26610 and Current Measurement Accuracy
- 4.4 Protection from Mis-wiring to Field Power Supplies
- 4.5 Heating and Temperature Rise with TPS26610
- 4.6 Reduction in PCB Size with TPS26610 for Current Input Protection
- 5Conclusion
4.4 Protection from Mis-wiring to Field Power Supplies
TPS26610 Device has integrated over-voltage and under voltage cut-off on OUT pin when voltage on OUT pin is more than ±Vs supplies. During a miswiring fault to field supply more than ±Vs supplies, TPS26610 turns off the internal FETs within 5µs and prevents power dissipation in burden resistor.Figure 4-4 illustrates the protection provided by TPS26610 during miswiring fault to field supply more than Vs supply
Figure 4-4 Over-voltage Cut-off with
TPS26610