公开(公告)号：US20210194367A1

公开(公告)日：2021-06-24

申请号：US17116794

申请日：2020-12-09

Applicant: Texas Instruments Incorporated

Inventor： Yangwei YU ,  Jian LIANG ,  Weicheng ZHANG ,  Ming LUO

IPC: H02M3/158 ,  H02M1/088 ,  H02M1/14 ,  H02M1/15

Abstract: A DC-DC converter control circuit includes an error amplifier, a voltage-to-current conversion circuit, an oscillator circuit, and a pulse frequency modulation (PFM) control circuit. The error amplifier is configured to generate a difference voltage as a difference of an output voltage of the DC-DC converter circuit and a reference voltage. The voltage-to-current conversion circuit configured to convert the difference voltage to a difference current. The oscillator circuit is configured to generate a clock signal at a predetermined frequency for pulse width modulation. The PFM control circuit is configured to disable the oscillator circuit, based on the difference current, for PFM operation.

公开(公告)号：US20220231611A1

公开(公告)日：2022-07-21

申请号：US17713107

申请日：2022-04-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Andres Arturo BLANCO ,  Ming LUO

IPC: H02M3/335 ,  H02M1/00 ,  H02M1/08

Abstract: A control signal generator includes an error amplifier, a first comparator, a second comparator, a logic circuit and a pulse generator. The error amplifier has a first output, a first input, a second input and a first snooze input. The first comparator has a second output, a third input and a fourth input. The third input is coupled to the first output. The second comparator has a third output, a fifth input, a sixth input and a second snooze input. The fifth input is coupled to the third input. The logic circuit has a fourth output and logic circuit inputs, including a first logic circuit input coupled to the second output. The pulse generator has a fifth output and a seventh input. The seventh input is coupled to the fourth output. A snooze mode controller has a sixth output coupled to the first snooze input and the second snooze input.