Samsung is aiming at electric vehicle on-board chargers with a 1,000v 22nF multi-layer ceramic capacitor.

Samsung 1kV 22nF MLCC
CL32C223JIV1PN# (yes, there is a # in the part number) is aimed at CLLC resonant power supply topologies and is constructed with a COG dielectric.

Operation is across -55 to +125°C and it has a ±5% tolerance.

Packaging is a 2.5mm tall 3.2 x 2.5mm surface mount 1210 (‘3225’ metric).

Samsung CL32C223JIV1PN capacitor graph

“MLCCs specified for use in battery-electric vehicles and plug-in hybrid electric vehicles must be of quality construction and operate at high voltages to ensure reliable charging of the traction battery by the on-board-charger,” according to Samsung. Multi-layer ceramic capacitors, rather than plastic film capacitors, are the preferred choice for distributed capacitance because of their ability to withstand high  temperatures.”

CLLC converter from Infineon app noteCLLC converter? 

A CLLC converter has a two full bridges of switching transistors, one at each end, linked by a transformer through two series-resonant LC networks, again one at each end.

The transformer ensures galvanic isolation between the ends and, with appropriate control, the converter can be bi-directional and step-up or step-down in either direction.