Looking for step-up dc/dc converter with Vin 2.5V , Vout 30V

Question

Hello Team, 
 I am looking for a boost converter with the following requirements : 
 Vin 2.5 To 4V 
 Vout >30V 
 power output 8W, 
 I did not manage to find any boost device that accepts Vin below 4.5V, could you please advise if we have anything to offer? 
 Thanks in advance. 
 
 Kind regards, 
 Shai

AB_RENESAS · Accepted Answer

Hi Shai, 
 We have Boost regulator device which has minimum voltage 2.3V but max is 25 V & current up 2A 
 P.N :- ISL97516/ISL97519A 
 Else you can check Boost buck controller :- P.N :-ISL85403 
 In Boost mode it will work from 2.5V 
 Thanks 
 AB

koby · Answer

Shai shalom you can use ISL97519A with extrenal Fet for higher voltage choose a fet with 65-55v at least see explanation in the datasheets make sure you are with in the chip correct spec limitation of the chip & run ISIM simulation at 500kHz any if you have questions please call me shabat shalom koby 
 Galberg Avnet Silica Israel :

AB_RENESAS · Answer

Hi Shai, 
 You can refer schematic from EVB for normal operation & refer cascaded operation for your spec. 
 To get review of your schematic kindly submit a Technical Support ticket by going to our support portal from the following link: https://en-support.renesas.com 
 You will need to sign in with your company email address, and if you don't have an account you will need to register with one. https://www.renesas.com/register . 
 Thanks 
 AB

AB_RENESAS · Answer

Hi Shai, 
 You can refer details form datasheet & once your schematic done we can review the same . 
 As there no specific application note available for cascaded MOSFET. 
 Thanks 
 AB

Looking for step-up dc/dc converter with Vin 2.5V , Vout 30V

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