Originally introduced by STMicroelectronics in 1998, VIPer (Vertical Intelligent Power-enhanced regulator) is a family of ICs intended for switched-mode AC to DC power supplies. These smart power ICs combine a PWM controller and a power stage in the same package. The VIPer family covers different power ranges and power-supply topologies. VIPer converters are very widely used in 115 volt or 230 volt powered electronic devices such as TVs, DVD players, computers, and mobile phone chargers.