The UCC28070 implements a triangular modulation method which results in equal time spent at every point along the switching frequency range. This total range from minimum to maximum frequency is defined as the dither magnitude, and is centered around the nominal switching frequency fPWM set with ...
The method that is described here achieves good results for most applications.[5] This method assumes that both the natural frequency of the system and the zero of the linearized boost PFC are much lower than both the switching frequency and the desired crossover frequency, fCO(pfc), as ...
2020 Q4 - Results - Earnings Call PresentationMon, Feb. 01, 2021 First Defiance Financial Corp. 2020 Q1 - Results - Earnings Call PresentationWed, Apr. 29, 2020 First Defiance Financial (FDEF) Investor Presentation - SlideshowFri, Feb. 14, 2020 First Defiance Financial (FDEF) Presents At ...
If the short-circuit condition is removed, the converter again starts operation, otherwise, if the short is still there, it results in an intermittent operation (hiccup mode) with a narrow operating duty cycle of the converter, in order to prevent the overheating of power components, a...
This work reports the experimental results of a 130 W PFC + LLC LED driver design based on our ICL5102 controller and cost-effective 650 V MOSFETs of the P7 series. Key performance of this board: 1. An integrated LLC transformer design 2. ...
2020 Q4 - Results - Earnings Call PresentationMon, Feb. 01, 2021 First Defiance Financial Corp. 2020 Q1 - Results - Earnings Call PresentationWed, Apr. 29, 2020 First Defiance Financial (FDEF) Investor Presentation - SlideshowFri, Feb. 14, 2020 First Defiance Financial (FDEF) Presents At ...
CVFF + 2p 1 RVFF fP ^ 2.2 mF (15) This results in a single-pole filter, which adequately attenuates the harmonic distortion and provides power limiting. The RMOUT resistor is sized to provide power limiting for the circuit. The power limit is set to 140% of the maximum output power. ...
must be calculated: P = I RRsense 2 IN _ RMS (max) SENSE PRsense = ( 4.52 A )2 ´ 0.067W = 1.36W The peak current limit, PCL, protection feature will be triggered when current through the sense resistor results in the voltage across RSENSE to be equal to the VPCL threshold. Fo...
This method gives a good starting point for any design, but a final design requires an iterative approach combining the FHA results, circuit simulation and hardware testing. An alternative design approach is given in TI Application Note, LLC Design for UCC29950, Texas Instruments Literature Number ...
The components required for the on-time clamp are very inexpensive and return results that make their inclusion a common choice for LED driver designers. This simplified design procedure assumes the use of an on-time clamp in the design. Rectified AC iL(ave) Peak Inductor Current follows this ...