公开(公告)号：US10345157B2

公开(公告)日：2019-07-09

申请号：US14254683

申请日：2014-04-16

Applicant: Silicon Integrated Systems Corp.

Inventor： Song-Sheng Lin

IPC: G01K7/01 ,  H03K3/03 ,  H03K3/0231

Abstract: An on-chip temperature sensing device is disclosed. The disclosed on-chip temperature sensing device is capable of sensing an environmental temperature of the chip. The device comprises a reference generating circuit, a first oscillator, a second oscillator, and an arithmetic logic unit. The reference generating circuit is configured to generate a first control voltage to control the first oscillator and the second oscillator. The bias current of the first oscillator and the bias current of the second oscillator are both controlled by the first control voltage so that the bias current of the first oscillator is directly proportional the bias current of the second oscillator regardless the environmental temperature. The first oscillator generates a first oscillation signal, while the second oscillator generates a second oscillation signal. The arithmetic logic unit may calculate the environmental temperature according to the first oscillation signal and the second oscillation signal.

公开(公告)号：US11848583B2

公开(公告)日：2023-12-19

申请号：US17205002

申请日：2021-03-18

Applicant: Silicon Integrated Systems Corp.

Inventor： Song-Sheng Lin ,  Keng-Nan Chen

IPC: G05F3/26 ,  H02J7/00

CPC classification number: H02J7/00714 ,  G05F3/262

Abstract: A constant current charging device is configured to charge a device to be charged and includes: a reference current source configured to provide a reference current; a current mirror electrically coupled to the reference current source and configured to output a mirror current; a current adjusting unit electrically coupled to the current mirror and the device to be charged and configured to output a charging current according to the mirror current to charge the device to be charged; and a current compensation unit electrically coupled to the current mirror and the current adjusting unit and configured to adjust the charging current according to a reference voltage.