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

5 Feature Comparison: LM749x0-Q1 as Ideal Diode FET and High Side Driver Topology

Table 5-1 showcase the list of functionality and features achievable with LM749x0-Q1 Ideal Diode FET only and High-side switch controller topology.

Table 5-1 Feature Comparison : LM749x0-Q1 as Ideal Diode FET and High Side Driver
Functionality/FeatureLM749x0-Q1 as Ideal Diode FET controller (Design 2)LM749x0-Q1 as High Side Driver (Design 3)
Input Reverse Polarity Protection√╳
Reverse Current Blocking√╳
Input Undervoltage Lockout√ (Only undervoltage indication)√
Overvoltage Protection╳√
Overcurrent and Short Circuit Protection╳√
Inrush Current Control╳√
Current Monitoring√√
Fault Indication√√
SLEEP Mode√ (Ideal diode FET body diode conducts when FET is OFF. No overcurrent or ovevoltage protection)√ (Internal bypass FET conducts in SLEEP mode with protections such as overcurrent and overvoltage latch off)