公开(公告)号：US20180287497A1

公开(公告)日：2018-10-04

申请号：US15944513

申请日：2018-04-03

Applicant: Integrated Device Technology, Inc.

Inventor： Gustavo MEHAS ,  Rui LIU ,  Lijie ZHAO ,  Siqiang FAN ,  Tae Kwang PARK ,  Zhitong GUO

IPC: H02M3/158 ,  G05F1/10

Abstract: A power converter control circuit includes a first ramp generator connected to an input voltage and configured to produce a first ramp signal; a second ramp generator connected to the input voltage and configured to produce a second ramp signal; an error amplifier configured to produce an error amplifier output. The first ramp signal and the error amplifier output are used to produce a first (pulse width modulation) PWM signal and the second ramp signal and the error amplifier output are used to produce a second PWM signal. The first and second PWM signals control an operating state of the circuit. In some embodiments, the first ramp signal includes an extended ramp reset time. In some embodiments, the first ramp generator includes a switching device, a current source, and a capacitor.

公开(公告)号：US20200212702A1

公开(公告)日：2020-07-02

申请号：US16368788

申请日：2019-03-28

Applicant: Integrated Device Technology, Inc.

Inventor： Siqiang FAN ,  Sercan IPEK ,  Eric HUANG ,  Turev ACAR

IPC: H02J7/00 ,  H02J7/02 ,  H02M3/07

Abstract: Embodiments described herein provides a battery charging circuit that boosts an input current and feeds the boosted input current to a battery for fast charging. Specifically, the battery charging circuit includes a low dropout regulator (LDO) for providing a voltage, a switch mode charger, coupled between the LDO and a battery, and a capacitor divider, coupled between the LDO and the battery, in parallel to the switch mode charger, for dividing the voltage outputted from the LDO by a factor.

公开(公告)号：US20190332909A1

公开(公告)日：2019-10-31

申请号：US16510498

申请日：2019-07-12

Applicant: Integrated Device Technology, Inc.

Inventor： Rui LIU ,  Tao QI ,  Lijie ZHAO ,  Gustavo James MEHAS ,  Tae Kwang PARK ,  Zhitong GUO ,  Siqiang FAN

IPC: G06K19/06 ,  G06Q20/32 ,  G06K7/08 ,  G06K7/10 ,  G06K19/077

Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.

公开(公告)号：US20190325280A1

公开(公告)日：2019-10-24

申请号：US16367189

申请日：2019-03-27

Applicant: Integrated Device Technology, Inc.

Inventor： Rui LIU ,  Tao QI ,  Lijie ZHAO ,  Gustavo James MEHAS ,  Tae Kwang PARK ,  Zhitong GUO ,  Siqiang FAN

IPC: G06K19/06 ,  G06K7/08 ,  G06Q20/32

Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.

公开(公告)号：US20180060712A1

公开(公告)日：2018-03-01

申请号：US15688682

申请日：2017-08-28

Applicant: Integrated Device Technology, Inc.

Inventor： Rui LIU ,  Tao QI ,  Lijie ZHAO ,  Gustavo James MEHAS ,  Tae Kwang PARK ,  Zhitong GUO ,  Siqiang FAN

IPC: G06K19/06 ,  G06K7/08 ,  G06Q20/32 ,  G06K19/077 ,  G06K7/10

CPC classification number: G06K19/06206 ,  G06K7/084 ,  G06K7/10316 ,  G06K19/07779 ,  G06Q20/3278

Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.