vieha007Electronic
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hi all,
As I know, there are 3 types of CMOS comparators:
1. Opamp-based (low speed)
2. Latch-based (high speed but also this type is discrete-time comparator and need clock signal for tracking and latching phases).
3. Hysteresis type (as shown in the attached figure below)
Currently, I am designing comparator used in buck converter. However, I can not explain in details about 2 things below:
1. The mechanism of this circuit, especially, the "positive feedback" mechanism in this circuit.
2. The small signal to analyze and calculate the propagation delay time
(The analysis for opamp-based and latch-based are deeply analyzed in Allen and Martin's book, however, I can not find down some material for the hysteresis comparator using cross-gate)
Do you have any opinions about this. Always appreciate the supports from community.
Thank you
As I know, there are 3 types of CMOS comparators:
1. Opamp-based (low speed)
2. Latch-based (high speed but also this type is discrete-time comparator and need clock signal for tracking and latching phases).
3. Hysteresis type (as shown in the attached figure below)
Currently, I am designing comparator used in buck converter. However, I can not explain in details about 2 things below:
1. The mechanism of this circuit, especially, the "positive feedback" mechanism in this circuit.
2. The small signal to analyze and calculate the propagation delay time
(The analysis for opamp-based and latch-based are deeply analyzed in Allen and Martin's book, however, I can not find down some material for the hysteresis comparator using cross-gate)
Do you have any opinions about this. Always appreciate the supports from community.
Thank you