Abstract: A fault-tolerant switching amplifier includes an inverter unit including N inverters, where N is a natural number, each of the N inverters including a plurality of switching elements and configured to perform switching ON or OFF of the switching elements based on a PWM signal inputted to the switching elements, thus switching an applied direct-current (DC) voltage, and to generate an output signal based on the switching and a switch unit including N switches respectively connected to output terminals of the N inverters, each of the N switches being configured to be short-circuited or open-circuited based on whether or not the corresponding one of the N inverters is in a normal operation condition. The output terminals of the N inverters are connected in series, such that output signals outputted from the inverters are combined to generate an amplified signal.

Abstract: A switch-control integrated circuit for a switch-mode power supply (SMPS) capable of consistently limiting the peak current value of an output supply voltage irrespective of a temperature change. The circuit includes a switching transistor of the SMPS and a sensing resistor coupled to a drain of the switching transistor for sensing a drain current of the switching transistor to produce a peak current value detection voltage. A voltage generating circuit generates a feedback voltage which varies depending on the temperature condition equal to that of the sensing resistor. A comparator compares the temperature dependent voltage, received at a first input, with the temperature dependent peak current value detection voltage, received at a second input, to produce a temperature independent control signal. A protection circuit, coupled between the comparator and the switching transistor, interrupts the control signal if an abnormal operation of the voltage generating section is detected.