Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Slide 11 Slide 12 Slide 13 Slide 14 Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Slide 20 Product List
XRP7714-slide13
There are a couple of ways to do a digital PWM. One is to use a counter based approach. PowerXR has an eight bit resolution digital PWM which would require a 384MHz clock at a switching frequency of 1.5MHz. A high frequency clock consumes a large amount of power, so instead MaxLinear has patented technology where a digital DLL is used with a sigma delta technique. The result is that designers can get 8-bit resolution at 1.5MHz switching frequency with only a 48MHz clock internally. At 800kHz switching frequency designers only need a 25.6MHz clock and this keeps the power consumption of MaxLinear's digital controller low; it is one of the unique pieces of IP in the PowerXR family.
PTM Published on: 2013-09-19