Hybrid aluminium polymer capacitors are EEC-Q200-qualified
Three hybrid aluminium polymer capacitors, the A780, PHA225, and PHH225 series offer high power density and low leakage in a compact, hybrid design for automotive and industrial applications. The capacitors are from Yageo, a Kemet subsidiary.
The AEC-Q200-qualified capacitors offer a combination of highly conductive polymer technology and liquid electrolytic material in a hybrid design, says the company. This results in an electrical performance suitable for automotive and industrial applications, claims Kemet. It coincides with the growing vehicle electrification market, driven, in part, by the increasing need for 48V architecture in mild hybrid electric vehicles (MHEV).
The A780 series is Kemet’s first release of a surface mount (V-Chip) hybrid aluminium polymer capacitor. Both liquid aluminium electrolyte and solid polymer materials are housed in a cylindrical aluminium can. The combination provides higher ripple current, lower equivalent series resistance (ESR), lower leakage current, and exceptional self-healing capability than standard solid polymer aluminium capacitors with no liquid electrolyte, Kemet reports. The capacitors can withstand heavy vibrations (up to 30g) to meet the design requirements for automotive powertrain and industrial applications, including engine control units, DC/DC converters, 48V inverters for MHEV, switched mode power supply (SMPS) and computer voltage regulator modules (VRM).
The PHA225 and PHH225 hyrbid polymer capacitors have an axial and radial crown design which also combines highly conductive polymer and liquid electrolytic material. The PHA225 and PHH225 capacitors can withstand temperatures up to 140 degrees C, and provide high ripple current capability and self-healing performance. The hybrid construction of polymer and liquid electrolytic provides extremely low and stable ESR across all temperature ranges, to extend the operating lifetime of the devices.
The PHA225 and PHH 225 capacitors are small in size, with high ripple current per unit volume. This is valuable when designing-in for automotive and industrial technologies, such as 48V automotive inverters, observes Kemet. By using smaller, high power density hybrid aluminium capacitors in parallel for an existing 48V automotive inverter design, engineers can reduce the number of components required, while maintaining high ripple current performance. The PHA225 and PHH225 hybrid series are suitable for designing in high power automotive applications, including DC-Link for 48V inverters, cooling fans, water pumps, power steering, and braking and injection systems.
The A780, PHA225, and PHH225 series are available immediately via Kemet distributors.
