The United States can simplify the design of high brightness PWM controller LED

The day before, the Fairchild Semiconductor (Fairchild Semiconductor) in order to meet the critical needs of high brightness LED market, launched a primary side regulation PWM controller FAN100 and FSEZ1016A, which can simplify the design and reduce circuit board space, and provide significant performance advantages. The FSEZ1016A is integrated with a primary side regulation PWM controller and a power MOSFET EZSWITCH controller, while the FAN100 is a primary side regulation PWM controller (PSRPWM). Through this integration, these controllers achieve the most accurate constant current control with its proprietary TRUECURRENT technology and the strict constant voltage range, without the need to use secondary side feedback circuit. Due to the wide voltage range of unsteady flow is tight, the same circuit can be used for different number of clusters of LED, so as to improve the flexibility of design, shorten the time to market, and prolong the service life of the HBLED. Because these PSRPWM controller has such a high degree of integration, it can save circuit board space, in order to match the shape of the size of the shrinking trend.

FSEZ1016A and FAN100 have proprietary power saving mode, this mode can provide turn off time modulation function, reduce the frequency of PWM under the condition of light load in a linear way. In addition, they can minimize the power consumption by reducing the secondary end of the feedback circuit and components (no load standby power consumption)