SNOAA94 june   2023 LM74900-Q1 , LM74910-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 LM749x0-Q1 Ideal Diode Controller Overview
  5. 2 Design 1: Automotive Reverse Battery Protection with Overvoltage, Undervoltage and Overcurrent Protection with Fault Output
  6. 3 Design 2: LM749x0-Q1 as Ideal Diode Controller with Current Monitoring, Overcurrent and Undervoltage Fault Indication
  7. 4 Design 3: LM749x0-Q1 as High Side Driver with Undervoltage, Overvoltage and Overcurrent Protection
  8. 5 Feature Comparison: LM749x0-Q1 as Ideal Diode FET and High Side Driver Topology
  9. 6 Design 4: Dual Supply OR-ing with Common Powerpath Disconnect Function
  10. 7 Design 5: LM749x0-Q1 as Priority Power MUX Controller
  11. 8 Feature Comparison: Dual OR-ing and Priority Power MUX Controller Topologies
  12. 9 Summary
  13. 10References

8 Feature Comparison: Dual OR-ing and Priority Power MUX Controller Topologies

Table 8-1 showcase the list of functionality and features achievable with LM749x0-Q1 Dual OR-ing with load disconnect and Priority power MUX topology.

Table 8-1 Feature Comparison: LM749x0-Q1 as Dual OR-ing and Priority Power MUX Controller
Functionality/FeatureLM749x0-Q1 as Dual OR-ing and Load disconnect Controller (Design 4)LM749x0-Q1 as Priority Power MUX controller (Design 5)
Supply Priority╳√
Input Reverse Polarity Protection√√
Reverse Current Blocking√√
Input Undervoltage Lockout*√√
Overvoltage Protection*√√

(No overvoltage protection on auxillary rail VAUX)

Overcurrent and Short Circuit Protection*√√
Inrush Current Control*√√
Current Monitoring*√√
Fault Indication*√√
SLEEP Mode*√√
Note: * For Dual OR-ing with load disconnect topology, all the protection features and respective thresholds will be common for both the rails. While for priority power MUX topology, each controller can be configured with separate protection feature threshold providing higher degree of flexibility.