Circuit for resonant converter current sense circuit delay compensation
AssigneeNXP USA, Inc.
InventorsMarcello Vaccalluzzo, Wilhelmus Hinderikus Maria Langeslag, Klaas Wortel, Peter Theodorus Johannes Degen, Frank van Rens
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Abstract
Embodiments of a circuit for current sense circuit delay compensation are disclosed. In an embodiment, a circuit for current sense circuit delay compensation includes an operational amplifier (Opamp), a resistor, and a capacitor, where the Opamp is configured to amplify a difference between an input voltage from a current sense circuit and a voltage between the resistor and the capacitor.
Claims20
A circuit for current sense circuit delay compensation, the circuit comprising:
- an operational amplifier (Opamp);
- a resistor;
- and
- a capacitor, wherein the Opamp is configured to amplify a difference between an input voltage from a current sense circuit and a voltage between the resistor and the capacitor.
A circuit for converter current sense circuit delay compensation, the circuit comprising:
- a two-stage operational amplifier (Opamp);
- a variable resistor;
- and
- a capacitor, wherein the two-stage Opamp is configured to amplify a difference between an input voltage from a current sense circuit and a voltage between the variable resistor and the capacitor to generate an output voltage, which is applied to the variable resistor.
A circuit for resonant converter current sense circuit delay compensation, the circuit comprising:
- a two-stage operational amplifier (Opamp);
- a variable resistor;
- and
- a capacitor, wherein the two-stage Opamp is configured to amplify a difference between an input voltage from a current sense circuit and a voltage between the variable resistor and the capacitor to generate an output voltage, which is applied to the variable resistor, wherein the current sense circuit senses a current in a resonant converter, and wherein the two-stage Opamp introduces a variable zero in a transfer function of the circuit to compensate for a variable pole in the transfer function in order to make the circuit stable in a frequency range.
Dependencies are inferred from the claim text.