Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Basically, look for a synchronous boost. Because the diode is replaced by a MOSFET, these devices provide protection by opening the "diode" or an additional MOSFET, used specifically for that purpose.
An example is the MAX8570-MAX8575 family. www.maxim-ic.com/quick_view2.cfm/qv_pk/4369/ln/
Try also the Linear Tech website for similar parts.