US 2019/0165684 A1Published application

Systems and methods for power converters with self-regulated power supplies

AssigneeOn-Bright Electronics (Shanghai) Co., Ltd.

InventorsLiqiang Zhu, Lieyi Fang

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Abstract

Controller and method for a power converter. For example, the controller includes a first controller terminal coupled to a gate terminal of a transistor. The transistor further includes a drain terminal and a source terminal, and the first controller terminal is at a first voltage as a first function of time. Additionally, the controller includes a second controller terminal coupled to the source terminal. The second controller terminal is at a second voltage as a second function of time. Moreover, the controller includes a third controller terminal coupled to a first resistor terminal of a resistor. The resistor further includes a second resistor terminal, and the third controller terminal is at a third voltage as a third function of time. Also, the controller includes a fourth controller terminal coupled to a first capacitor terminal of a capacitor.

Claims8

Dependent claims

A controller for a power converter, the controller comprising:

a first controller terminal coupled to a gate terminal of a transistor, the transistor further including a drain terminal and a source terminal, the first controller terminal being at a first voltage as a first function of time;
a second controller terminal coupled to the source terminal, the second controller terminal being at a second voltage as a second function of time;
a third controller terminal coupled to a first resistor terminal of a resistor, the resistor further including a second resistor terminal, the third controller terminal being at a third voltage as a third function of time;
a fourth controller terminal coupled to a first capacitor terminal of a capacitor, the capacitor further including a second capacitor terminal, the fourth controller terminal being at a fourth voltage as a fourth function of time;
wherein, from a first time to a second time,
the first voltage remains at a first magnitude;
the second voltage increases from a second magnitude to a third magnitude;
the third voltage remains at a fourth magnitude;
and
the fourth voltage increases from a fifth magnitude to a sixth magnitude;
wherein, from the second time to a third time,
the first voltage remains at the first magnitude;
the second voltage remains at the third magnitude;
the third voltage remains at the fourth magnitude;
and
the fourth voltage remains at the sixth magnitude;
wherein:
the second time is after the first time;
and
the third time is after the second time or is the same as the second time.

17 more elements

A method for a power converter, the method comprising:

from a first time to a second time, keeping a first voltage of a first controller terminal at a first magnitude, the first controller terminal being coupled to a gate terminal of a transistor, the transistor further including a drain terminal and a source terminal, the first controller terminal being at the first voltage as a first function of time;
from the first time to the second time, increasing a second voltage of a second controller terminal from a second magnitude to a third magnitude, the second controller terminal being coupled to the source terminal, the second controller terminal being at the second voltage as a second function of time;
from the first time to the second time, keeping the third voltage of a third controller terminal at a fourth magnitude, the third controller terminal being coupled to a first resistor terminal of a resistor, the resistor further including a second resistor terminal, the third controller terminal being at the third voltage as a third function of time;
from the first time to the second time, increasing a fourth voltage of a fourth controller terminal from a fifth magnitude to a sixth magnitude, the fourth controller terminal being coupled to a first capacitor terminal of a capacitor, the capacitor further including a second capacitor terminal, the fourth controller terminal being at the fourth voltage as a fourth function of time;
from the second time to a third time, keeping the first voltage at the first magnitude;
from the second time to the third time, keeping the second voltage at the third magnitude;
from the second time to the third time, keeping the third voltage at the fourth magnitude;
and
from the second time to the third time, keeping the fourth voltage at the sixth magnitude;
wherein:
the second time is after the first time;
and
the third time is after the second time or is the same as the second time.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/205,015Filed 29 Nov 2018
Priority: CN 201710202362.230 Mar 2017
Published: 30 May 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H02M 3/33515
With automatic control of the output voltage or current, e.g. flyback converters: with digital control
H02M 1/08
Details of apparatus for conversion: circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in…
H02M 1/36
Details of apparatus for conversion: means for starting or stopping converters
H02M 3/33507
Using semiconductor devices only: with automatic control of the output voltage or current, e.g. flyback converters

Family

Application15/592,077Continuation · filed 10 May 2017
Application16/205,015Continuation
US 10,181,795 B2Related patent
US 10,505,460 B2Related patent
US 2018/0287501 A1Published application
US 2019/0165684 A1This patent

From the US filing history. Foreign family members aren’t listed.

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