公开(公告)号：US20210091665A1

公开(公告)日：2021-03-25

申请号：US17009848

申请日：2020-09-02

Applicant: NXP B.V.

Inventor： Christian Vincent SORACE ,  Nicolas Patrick Vantalon

IPC: H02M3/04 ,  H02M1/36

Abstract: A method is provided for soft starting a single inductor multiple output (SIMO) power supply. The method includes selecting operation in a pulse width modulation (PWM) mode. A first pulse frequency modulation (PFM) mode is enabled to supply a first load with a first voltage and the power supply begins to ramp up the output voltage. After the output voltage has reached a desired value in the PFM mode, the PFM mode is disabled. Then, operation is enabled in the PWM mode. The SIMO power supply then supplies a current to one or more loads in the PWM mode.

公开(公告)号：US20210173422A1

公开(公告)日：2021-06-10

申请号：US17091401

申请日：2020-11-06

Applicant: NXP B.V.

Inventor： Christian Vincent SORACE ,  Ludovic Oddoart ,  Fabien Boitard

IPC: G05F1/575 ,  G05F1/565 ,  G05F1/46 ,  G05F1/445

Abstract: An example apparatus includes power amplification circuitry and current-level switch circuitry. The power amplification circuitry has a first input port, a second input port, and field-effect transistor (FET) circuitry, the FET circuitry to operate in a saturation mode while drawing power provided at the first input port from a first power source. The current-level switch circuitry is to sense a change in a current-level used to maintain the FET circuitry in the saturation mode and, in response to the sensed change in the current-level, to cause the power amplification circuitry to draw power provided at the second input port from a second power source while maintaining the saturation mode of the FET circuitry.