Combo circuit with electrostatic discharge protection
AssigneeLeadtrend Technology Corp.
InventorsJhen-Hong Li, Chiung-Fu Huang, Chih-Yao Chang, Cheng-Sheng Kao, Chih-Wen Hsiung
Life of this patent
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Abstract
A combo circuit with electrostatic discharge protection includes a pulse width modulation integrated circuit and a power integrated circuit. The pulse width modulation integrated circuit has an electrostatic discharge protection circuit and the electrostatic discharge protection circuit is installed between a source of the power integrated circuit and a reference ground potential of the combo circuit.
Claims10
A combo circuit with electrostatic discharge protection, comprising:
- a pulse width modulation (PWM) integrated circuit having an electrostatic discharge protection (ESD) circuit, wherein the pulse width modulation integrated circuit further comprises:
- a first metal oxide semiconductor field effect transistor, and
- a gate control circuit, wherein a drain of the first metal oxide semiconductor field effect transistor is coupled to the gate control circuit, a gate of the first metal oxide semiconductor field effect transistor is coupled to another circuit within the pulse width modulation integrated circuit, and a source of the first metal oxide semiconductor field effect transistor is coupled to a reference ground potential of the combo circuit, wherein the gate control circuit is used for generating a pulse width modulation signal to a power integrated circuit;
- and
- wherein the electrostatic discharge protection circuit is installed between a source of the power integrated circuit and the reference ground potential of the combo circuit.
A combo circuit with electrostatic discharge protection, comprising:
- a pulse width modulation (PWM) integrated circuit having an electrostatic discharge protection (ESD) circuit, wherein the electrostatic discharge protection circuit comprises:
- a first diode, wherein a first terminal of the first diode is coupled to a reference ground potential of the combo circuit;
- a second diode, wherein a first terminal of the second diode is coupled to a second terminal of the first diode, and a second terminal of the second diode is coupled to a source of a power integrated circuit;
- a third diode, wherein a first terminal of the third diode is coupled to the source of the power integrated circuit, and
- a fourth diode, wherein a first terminal of the fourth diode is coupled to a second terminal of the third diode, and a second terminal of the fourth diode is coupled to the reference ground potential;
- and
- wherein the electrostatic discharge protection circuit is installed between the source of the power integrated circuit and the reference ground potential of the combo circuit.
A combo circuit with electrostatic discharge protection, comprising:
- a pulse width modulation (PWM) integrated circuit having an electrostatic discharge protection (ESD) circuit;
- a power integrated circuit, wherein the electrostatic discharge protection circuit is installed between a source of the power integrated circuit and a reference ground potential of the combo circuit;
- and
- a high voltage start-up integrated circuit for generating a supply voltage to the pulse width modulation integrated circuit according to a direct voltage to make the pulse width modulation integrated circuit operate.
A combo circuit with electrostatic discharge protection, comprising:
- a high voltage start-up integrated circuit having an electrostatic discharge protection circuit;
- a power integrated circuit, wherein the electrostatic discharge protection circuit is installed between a source of the power integrated circuit and a reference ground potential of the combo circuit;
- and
- a pulse width modulation integrated circuit, wherein the high voltage start-up integrated circuit generates a supply voltage to the pulse width modulation integrated circuit according to a direct voltage to make the pulse width modulation integrated circuit operate.
Dependencies are inferred from the claim text.