I hope someone can suggest the proper IC / family for the following:
Available DC power ramps up from 0 to 450 VDC at up to 15 AMPS and back down to 0 (SOLAR PANEL ARRAY).
Intended intermediate load operates from 200 to 400 VDC and may only need 5 or less amps. Over 400 VDC and poof !
PWM needs to turn on switch (not try to boost or buck) and just pass current <375 VDC. Droop is ok
PWM needs to buck as voltage exceeds 375 VDC.
I considered a simple series pass emiiter / source follower but would rather not burn off 75 volts if a
SMPS can run cooler. Someone suggested the UC2842 or UC.2843.
External switch can be Nfet, Pfet, or IGBT. Can supply isolated floating gate drive if needed..
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.