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AssigneeLinear Technology Corporation
InventorsGregory J. Manlove, Andrew J. Gardner, Yiding (Eric) Gu
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A switching regulator is configured to provide a regulated voltage to a load while maintaining a substantially maximum output current limit, the switching regulator having a loop gain. In accordance with one aspect the switching regulator comprises: a circuit for adjusting the maximum output current limit in response to a programmable signal independently of the loop gain. In accordance with another aspect, the switching regulator comprises: a resistance sensing element for providing the current output of the regulator, and having a resistance which varies with temperature; and a circuit for maintaining the output current limit at a level independent of the temperature of the sensing element. In addition, in accordance with one aspect, a method of providing a regulated voltage to a load is disclosed in which a substantially maximum output current limit of a switching regulator is maintained. In one aspect the method comprises: adjusting the maximum output current limit in response to a programmable signal independently of the loop gain. In accordance with a second aspect, the method comprises: maintaining the output current limit at a level independent of the temperature of the sensing element and a constant transient response to load perturbations as a function of temperature and current limit setting.
An integrated circuit comprising:
A switching regulator configured to provide a regulated voltage to a load while maintaining a substantially maximum output current limit, the switching regulator comprising:
A switching regulator configured to provide a regulated voltage to a load while maintaining a substantially maximum output current limit, the switching regulator having a loop gain, the switching regulator comprising:
A method of providing a regulated voltage to a load while maintaining a substantially maximum output current limit of a switching regulator of the type having a loop gain and comprising (a) a duty cycle adjustable voltage clamp circuit;
In an output circuit comprising (a) a switch circuit that is configured to be coupled to a power source and an output, (b) a duty cycle adjustable voltage clamp circuit coupled to the switch circuit for regulating the voltage output of the output circuit;
Dependencies are inferred from the claim text.