Other Parts Discussed in Thread: UCC21750, ISO5851, UCC21710, UCC21540
Hello everyone,
I am building a grid connected system, which consists of a three phase inverter (2 level AFE) and two parallel DC-DC converter (LC-SRC) which all connected to a DC-Link with 1200Vdc. In my case, I will use SiC-MOSFET half bridge power modules from Infineon. And I am trying to find an appropriate gate driver IC, where should have an Isolation voltage above Viowm = 1200Vrms, according to VDE 0884-11, because a blocking voltage of 1200Vrms occurs across the power switches. I found some perfect ICs for my application in ti-website. But the Problem is that they are not available in market. (I searched almost all distributors website.) This ICs are UCC21750, ISO5851, ISO5852-EP, because IC must have at least DESAT and UVLO. But I found another IC which is available in Mouser "UCC5870QDWJQ1", but the problem is the Insulation characteristics according to VDE 0884-11 are not given in its datasheet. And the already defined insulation characteristics of UCC5870 are same as another similar IC "UCC5871", where for UCC5871 the insulation characteristics according to VDE 0884-11 given in its own datasheet. My question is, is there any additional info sheet, where the insulation characteristics according to VDE 0884-11 are given or some proof that both ICs (UCC5870 and UCC5871) have same insulation characteristics.
best regards
ergin