US 12,334,819 B2
Compensation slope adjustment in voltage converter
Sombuddha Chakraborty, Redwood City, CA (US); and Raveesh Magod Ramakrishna, Dallas, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Jul. 30, 2021, as Appl. No. 17/390,015.
Prior Publication US 2023/0031749 A1, Feb. 2, 2023
Int. Cl. H02M 3/156 (2006.01); H03K 3/037 (2006.01); H03F 3/45 (2006.01)
CPC H02M 3/156 (2013.01) [H03K 3/037 (2013.01); H03F 3/45475 (2013.01)] 24 Claims
OG exemplary drawing
 
19. A system comprising:
a power stage coupled between a power input and a reference terminal, the power stage having a power stage input and a power stage output;
an inductor coupled between the power stage output and a power output;
a current sense circuit coupled to the inductor, the current sense circuit having a current sense output;
a comparator having a first comparator input, a second comparator input, and a comparator output, the first comparator input coupled to the current sense output, and the comparator output coupled to the power stage input;
a first ramp generator including a first current source coupled between a voltage terminal and a first ramp output and a capacitor coupled between the first ramp output and a ground terminal, the first current source having a control input;
a current mirror having a first current terminal and a second current terminal, the first current terminal coupled to the first current source;
a second ramp generator having a second ramp output and a ramp current input;
a second current source coupled between the second current terminal and the ramp current input; and
a slope control circuit having a slope control input and a slope control output, the slope control input coupled to the current sense output, and the slope control output coupled to the control input.