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US 11,316,444 B2Granted
Charge pump circuit and method for voltage conversion
AssigneeAmsag
InventorJuan Miguel Gavillero
Life of this patent
Estimating the term…
Abstract
An inverter circuit arrangement that connects an IO-link master with a slave includes an AB class transistor circuit of which the currents are replicated by a current mirror to a terminal of the slave. A bias circuit provides bias voltages to the AB class transistors. A comparator forms a feedback between the master and slave terminals. The circuit provides for a bidirectional inversion to make a slave device IO-link compatible.
Claims12
An inverter circuit arrangement, comprising:
- a first terminal, a second terminal, a terminal for a first supply potential and a terminal for a second supply potential;
- a pull-up resistor connected to the first terminal and to the terminal for the first supply potential;
- an AB class transistor circuit connected to the second terminal;
- a first current mirror having an input path connected to the terminal for the first supply potential and to one end of the AB class transistor circuit and having an output path connected to the first terminal;
- a second current mirror having an input path connected to the terminal for the second supply potential and to another end of the AB class transistor circuit and having an output path connected to the first terminal;
- a bias circuit comprising a bias current source to provide a bias current, a current mirror configured to receive the bias current and having an output path that includes a transistor of the AB class transistor circuit and having an input path that includes a diode connected to the terminal for the first supply potential and a transistor configured as a diode connected to the control terminal of the transistor of the AB class transistor circuit;
- another current mirror configured to receive the bias current and having an output path that includes another transistor of the AB class transistor circuit and having an input path that includes a diode connected to the terminal for the second supply potential and a transistor configured as a diode connected to the control terminal of the other transistor of the AB class transistor circuit;
- and
- a comparator connected to the first terminal having an output connected to the second terminal through a third current mirror.
6 more elements
Dependencies are inferred from the claim text.