US 12,463,538 B2
DC-to-DC converter with pulse skipping function and on-time control function, and electronic devices including the same
Dam Yun, Suwon-si (KR); Jaekyu Kim, Suwon-si (KR); Jehyung Yoon, Suwon-si (KR); and Sangik Cho, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jan. 6, 2023, as Appl. No. 18/151,115.
Claims priority of application No. 10-2022-0044196 (KR), filed on Apr. 8, 2022.
Prior Publication US 2023/0327548 A1, Oct. 12, 2023
Int. Cl. H02M 3/157 (2006.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01)
CPC H02M 3/157 (2013.01) [H02M 1/0009 (2021.05); H02M 1/083 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A DC-to-DC converter comprising:
a first switching circuit connected between a power line receiving a DC voltage and an output terminal of the DC-to-DC converter, and the first switching circuit configured to be switched based on a first pulse control signal;
a second switching circuit connected between the output terminal and a ground, and the second switching circuit configured to be switched based on a second pulse control signal;
a pulse control signal generation circuit configured to,
receive a first level of a first voltage associated with an output voltage of the output terminal and a second level of a first reference voltage,
generate the first pulse control signal to increase the output voltage, in response to the second level of the first reference voltage being higher than the first level of the first voltage associated with the output voltage of the output terminal,
generate the second pulse control signal to decrease the output voltage, in response to the second level of the first reference voltage being lower than the first level of the first voltage associated with the output voltage of the output terminal, and
set a pulse skip mode control signal to a first mode, in response to a zero current detection signal not occurring within a reference cycle; and
a pulse skip control circuit configured to selectively transfer the second pulse control signal to the second switching circuit based on the zero current detection signal and the pulse skip mode control signal such that the second pulse control signal is transferred to the second switching circuit to decrease the output voltage, in response the pulse skip mode control signal being set to the first mode, and
wherein the first pulse control signal and the second pulse control signal are complementary signals.