US 12,348,146 B2
Isolated high-voltage DC-DC converter hysteretic burst mode noise immunity using dynamic hysteresis
Bharath Balaji Kannan, Merrimack, NH (US); Robert Martinez, Lucas, TX (US); Jose Antonio Vieira Formenti, Allen, TX (US); and Michael Corry, Plano, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Jan. 27, 2023, as Appl. No. 18/160,374.
Prior Publication US 2024/0258927 A1, Aug. 1, 2024
Int. Cl. H02P 1/00 (2006.01); B60L 53/22 (2019.01); H02M 1/08 (2006.01); H02M 3/335 (2006.01); H02M 7/5387 (2007.01); H02P 27/06 (2006.01)
CPC H02M 3/335 (2013.01) [B60L 53/22 (2019.02); H02M 1/08 (2013.01); H02M 7/5387 (2013.01); H02P 27/06 (2013.01); B60L 2210/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated circuit (IC) package comprising:
primary- and secondary-side circuitry separated by an isolation barrier;
a transformer arranged across the isolation barrier; and
a feedback lane across the isolation barrier,
the secondary-side circuitry comprising:
a first current source coupled to a resistor;
a comparator coupled at a first input to a signal based on an output voltage of the secondary-side circuitry, and at a second input to a voltage;
a control output coupled to an output of the comparator;
in series with a first switch coupled to and controlled by the output of the comparator output, a second current source coupled to the resistor;
a timing pulse generator coupled at an input to the control output; and
in series with a second switch coupled to and controlled by an output of the timing pulse generator, a third current source coupled to the resistor.