The BQ55090QZB84 from SynQor is a DC to DC Converter with Input Voltage 35 to 55 V, Output Voltage 1 9.6 V, Output Current 1 0 to 84 A, Output Power 781 W, Isolation Voltage 2 kV. Tags: Module, Buck/Step down. More details for BQ55090QZB84 can be seen below.