SLYT710B september   2017  – august 2023 LM22670 , LM25145 , LM2696 , LM3100 , LM3150 , LM3475 , LM3485 , LM5017 , LM5116 , LM5119 , LM5140-Q1 , LM5145 , TPS40040 , TPS40057 , TPS40170 , TPS51116 , TPS53014 , TPS53219A , TPS53355 , TPS54325 , TPS54336A , TPS543B20 , TPS543C20 , TPS543C20A , TPS54478 , TPS54610 , TPS54620 , TPS548A20 , TPS548D22 , TPS54A20 , TPS56121 , TPS56C215 , TPS62097 , TPS62130 , TPS82130

 

  1.   1
  2. 1 Overview
  3. 2 Voltage mode
  4. 3 Voltage mode with voltage feed-forward
  5. 4 Peak current mode
  6. 5 Average current mode
  7. 6 Emulated current mode
  8. 7 Internally-compensated advanced current mode (ACM)
  9. 8 Hysteretic control mode
  10. 9 Constant on-time
  11. 10Constant on-time with emulated ripple mode
  12. 11DCS-Control™: Direct control with seamless transition into power-save mode
  13. 12Direct connection to the output capacitor (D-CAP™)
  14. 13D-CAP+™
  15. 14D-CAP2™
  16. 15D-CAP3™
  17. 16D-CAP4™

10 Constant on-time with emulated ripple mode

A variation of the COT regulator that senses a portion of the low-side MOSFET’s off-time current and injects it into the error comparator to emulate ripple. This control mode has the same fast transient response and fewer external component advantages of COT.

When to use: When employing low-ESR ceramic capacitors or when an external ripple injection circuit is undesirable.

Popular devices: LM3100, LM3150

Learn more: Emulated ripple technique advances hysteretic switch-mode supplies