H-bridge driver with output signal compensation
Abstract:
In an example driver circuit, one of two current sources coupled between a supply voltage and one output node is disabled during a driver disable time period (tpz) while the other continues to operate during a pre-charge monopulse time period (td) within tpz. A third current source on the other side of the driver circuit and coupled to ground is also disabled during tpz. During td, the following components are enabled: a charge current source coupled between the supply voltage and a second output node; a pair of current switches respectively coupled to the output nodes; and a pair of pull-down switches respectively coupled to control terminals of the current switches. After tpz, during a compensation time period (tcomp), the current sources enabled during td are disabled and a compensation current source is enabled. After tcomp, the compensation current source is disabled.
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