Champion Microelectronic CM6901
CM6901 is a SLS, SRC/LLC + SR resonant controller and it can operate at both SRC and LLC region with synchronous rectification to achieve high efficiency. Its unique features: FM + 2 PWMING modes. It is used for DC-DC conversion in offline application.| Part No. | CM6901 |
|---|---|
| Datasheet | CM6901 Download |
| Manufacturer |  Champion Microelectronic |
| Description | SLS (SRC/LLC+SR) Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
FEATURES
Its unique features: FM + 2 PWMING modes. Light load regulation is accomplished by transitioning the controller from frequency modulation mode into PWM mode. We call this is Light load PWMING function. When ac turn off, bulk input voltage will drop. The switching frequency is below the highest resonant point frequency fr1=1/ 2 LrCr ;Lr: resonant choke; Cr: resonant cap . SR Ideal Diode PWMING for synchronous drivers is accomplished by comparing the voltage signal at the RSET pin to RTCT ramp. The pulse-width reduction will happen when switching frequency below the highest resonant point frequency fr1. The CM6901 have FM + 2 PWMING modes to have the optimal balance performance between hold-up time and efficiency. The operate region shown as fig1. CM6901 system has a constant voltage feedback loop with precision 2.5V VFB reference. The 1V ILIMIT can be latched when a standby converter is applied; otherwise, it is an auto-restart I limit. fr1 60● 90+ Control...
