METHODS AND APPARATUS FOR NEGATIVE OUTPUT VOLTAGE ACTIVE CLAMPING USING FLOATING BANDGAP REFERENCE AND TEMPERATURE COMPENSATION

摘要

Methods, apparatus, systems and articles of manufacture for negative output voltage active clamping using a floating bandgap reference and temperature compensation are disclosed. An example load switch (1200) includes a floating bandgap reference circuit (1230) to generate a bandgap reference voltage (1231). A resistor divider (1250) is to generate a resistor divider voltage. A temperature compensator (1240) to apply a temperature compensation current (1241) to the resistor divider to create a temperature compensated resistor divider voltage. A power transistor (1265) is to be enabled when the temperature compensated resistor divider voltage is less than the bandgap reference voltage (1231). The example load switch (1200) can work under negative output voltage clamping and get better accuracy drain to source clamped voltage of power transistor (1265) for inductive load condition.