SLUAB09 October 2025 AMC0386-Q1 , TPS61170 , TPS61170-Q1 , TPSI2140-Q1
Based on the previous analysis and equivalent circuit, Table 2-1 summarizes the characteristics of the three IMD architectures.
| Architecture | Basic | Dual switches | Active single switch | |
|---|---|---|---|---|
| Components | Op-amp × 1 | Switch × 2 + Op-amp × 1 | Switch × 1 + Op-amp × 1 + DC bias × 1 | |
| Accuracy | Low | High | Medium | |
| Effort on software | Low | High | Medium | |
| Cost | Low | High | Medium | |
| Influence of Y-capacitor | High | Medium | Low | |
| Features | Symmetric | Asymmetric fault | No | Yes | Yes |
| Detect fault location | Yes | Yes | No | |
| Calculate insulation resistance | No | Yes | No | |
| Operate without AC voltage present | No | No | Yes | |
| Golden rule | ||||