TOPSwitch Family

The TOPSwitch-JX and TOPSwitch-HX families of products use the same proven topology as TOPSwitch, cost effectively integrating the high voltage power MOSFET, PWM control, fault protection and other control circuitry onto a single CMOS chip. Both incorporate a high-voltage power MOSFET, high voltage switched current source, PWM control, oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device.

TOPSwitch-JX - The latest generation product in the TOPSwitch line, TOPSwitch-JX is a highly integrated family of power conversion ICs incorporating a 725 V power MOSFET for use in flyback power supplies. The novel TOPSwitch-JX multi-mode control algorithm maximizes power efficiency across the entire load range. High efficiency at full power minimizes power wasted during normal operation and reduces the complexity and expense of thermal management on the system. At low power levels, high efficiency enables adapters with extremely low no-load consumption and maximizes power available to the system in standby mode for applications constrained by standards and regulatory controls.

TOPSwitch-HX - TOPSwitch-HX features multi-mode operation with linear frequency reduction to 30 kHz (@ 132 kHz) and multi-cycle modulation (assuring virtually no audible noise), Output Overvoltage Protection (OVP), improved Line Feed-Forward with Duty Cycle Reduction, and I2f Trimming.