Other Parts Discussed in Thread: TPS51604 , UCC27222 Do you have a half-bridge driver with the facility to disable the lower FET automatically if its drain voltage is above zero, so that it can make a Synchronous buck go into discontinuous mode at low…
Hello Kanemaru,
TI does not have a high side only driver at this time, but many half bridge drivers can be operated as high side only. I have a couple of concerns on the UCC27222 however. This part is indicated as not for new designs, so I would recommend…
Hi Hirotaka,
Thanks for asking about LM5106. I am an apps engineer and will help you out.
Figure 19 shows that the deadtime can be adjusted from 100ns to 800ns with a resistor value from 10k to 150k. A resistor value of 5k on RDT can be used however…
Other Parts Discussed in Thread: UCC27222 , TPS2834 I am trying to look for a sync buck MOSFET driver that has adative dead time control. I like to see the low side MOSFET turned on by seeing switching node falls below certain threshold, for example 0…
Hello,
The UCC3806 is a dual output controller though it can be used in a flyback where only one of the outputs are used to drive the switch it might be better to choose a single output controller. Look at page 46 of the attached under General Purpose…
Siyu,
I think the toggle flip-flop in the block diagram on page one of the spec should have let you know that the max you will get with this device is 50% duty.
Go to page 43 and 44 of the attached and select a more suitable part.
Peter,
i am enclosing the Power Management Guide for 2011. The section you will be interested in starts on page 43 and actual devices listed on page 46, With the minimum information you have given me I would expect that you will want something like…
Hi,
I've attached the 2013 User's Guide for power products. Starting on page 53 you will find a selection of PWM controllers. many of these teh frequency can be varied according to external criteria.
As an example if you use a UC3842 it is a simple…
