Hi,
Normally we apply Load ,Line transient and do other tests (like current limit) once a device reach it's steady state.
As Startup simulation takes ~5-10 minutes to reach steady state, we try to provide a separate steady state simulation test bench…
Other Parts Discussed in Thread: LM5118 , UCC3813-4 , TPS40210 Hello,
I am working on an application that requires the switching control be regulated only based on input current or voltage, and I am currently investigating the possible use of the LM5118…
A M,
TI does not offer a dedicated Negative Input / Negative output (Quadrant 3) BUCK Converter.
We do offer a Quadrant 3 LDO that you can consider - the LM2991 and you can use WeBench to provide you with a reference design.
Alternately, you…
toapex
TI does not offer an integrated FET negative input / negative output (also called Quadrant 3) converter, you would need to make one using a controller and external power FETs. The circuit works like an inverted BUCK, but the controller drives…
Hello,
This circuit is essentially a negative input buck converter. Instead of traditional buck converter where the input ground and output ground are the same node, in this topology the positive input and positive output are the same node. I have attached…
Hello Jerry,
A FlyBuck may not reach 12 watts that you need. A classic Flyback would be better.
The reference design tool is very helpful in these situations. It can help identify designs that are close to what you need and which TI devices would…
Hi John,
i have been able to attach the files.
Best regards,
Stefan
56V_0.35A flyback Mathcad pdf.pdf
Power Tip #98 - Designing a DCM flyback converter.pdf
PowerTips Designing a CCM flyback converter.pdf
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…
Gary,
Most any of our power controllers with dual output capability will provide the control. See attached document starting at page 50 with the dual output controllers on page 53 and 54 and choose what features you want.
Regards,
John
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…
