Please recommend Boost regulator

What is the maximum Vin? You have two outputs for case1...is it really 3 cases? or do you just need 20 V at 600 mA and 30 V at 600 mA?

Hey John...Thanks for lightning response....

My Max Vin is 4.2v(6A)....

I would appreciate if i get a boost reg for 30v / 600mA so that i can use it for all my piezo actuator cases...

I am running Pspice simulations for 20v@600mA and 30v@330mA....If i use a constant Res load it works.....But if i am using a current pulse load switching at 3ms , the above cases doesn't work....

Regards
Jones

For TPS55340, the maximum current for 30 V output is about 440 mA. What kind of pspice issues are you having?

For 600 mA, webench suggests LM3478 or LM3488 (neither of which I support directly).

Query 1 : Can you suggest me a Boost reg for 30V@600mA OUTPUT ?

Query2: Pspice issues - I am using TPS55340...If i use a current pulse at load to turn it on after 3ms the below issue happened,

@ 20v/600mA - after 3ms, the voltage starts drop down to slowly and never rise above 10v....

Can you post a screen shot of your pspice output and schematic? Or are you going to transition to one of the LM parts above?

John,

please find the pspice schematic & the simulation output....I have my queries in the attached snapshot.

I am suspecting issue with the current pulse load using,

Some more support needed from TI :

I am using 10 numbers of TPS82085 regulators in addition to the above 2 boost reg in my design.

a) Can i get flat schematic simulation deck for TPS82085 & TPS55340 , where i am going to add all these 12 regulators and doing the transient pspice simulation, power sequence

b) Do TI will do our regulator schematic review (12 regulators in our design) . Ours is consumer product & mass production.

Regards

Jones