Out-of-audio switching frequency control

An apparatus, comprising:

• a logic circuit having a clock input, a first logic circuit control output, and a second logic circuit control output;
• a clock generation circuit having a clock output, a first clock control input, and a second clock control input the clock output coupled to the clock input;
• an off-timer circuit having an off-timer output;
• a comparator having a comparator output;
• and
• an out-of-audio (OOA) circuit coupled to the comparator output, the clock output, the first clock control input, the second clock control input, and the off-timer output, the OOA circuit configured to start a timer based on a comparator signal from the comparator output and to cause the logic circuit to initiate a switching cycle outside an audible frequency range, wherein initiation the switching cycle is based on expiration of the timer.

A power converter, comprising:

• a power stage having a first power stage input and a second power stage input;
• a logic circuit having a clock input, a first logic circuit control output, and a second logic circuit control output, the first logic circuit control output coupled to the first power stage input, and the second logic circuit control output coupled to the second power stage input;
• a clock generation circuit having a clock output, a first clock control input, and a second clock control input the clock output coupled to the clock input;
• an off-timer circuit having an off-timer output;
• a comparator having a comparator output;
• and
• an out-of-audio (OOA) circuit coupled to the comparator output, the clock output, the first clock control input, the second clock control input, and the off-timer output, the OOA circuit configured to start an OOA circuit timer based on a comparator signal from the comparator output and to cause the logic circuit to initiate a switching cycle upon expiration of the OOA circuit timer.