A Robust Pseudo-Ternary Modulation Scheme for Filter-Less Digital Class D Amplifiers
This paper presents a new pseudo-ternary modulation scheme for bridge-tied-load digital class D amplifiers which is more robust versus output stage distortions compared to existing ternary modulations. The effects of finite rise and fall times and their mismatches have been introduced for a classical ternary modulation scheme, where a large degradation of the dynamic range can be observed, and then extended to reported high performance ternary modulators. It is shown that, even if linearization pulses are inserted to cope with the finite rise/fall time problem, these modulators are somehow impacted by the edge mismatches.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.