Infineon supports the trend for more robust semiconductors
Supporting the trend from relay to more robust semiconductor solutions, Infineon Technologies has released its HITFET+ family of protected low-side switches.
The HITFET+ family offers a compelling feature-set with its diagnosis function, digital status feedback and short-circuit robustness, and controlled slew rate adjustment for easily balancing switching losses and EMC compliance.
The HITFET+ family will comprise at least 16 members varying in RDS(ON), feature set and package size. HITFET+ products of one package size are completely scalable: There is no need for system designers to change either software or PCB layout to drive various loads. The first family member, the BTF3050TE, is already available in high-volume.
In automotive applications, the HITFET+ products can drive solenoids for valve control with PWM up to 20kHz. Moreover, they suit automotive light dimming applications where they prevent flickering and support the current intensities of 10W to 60W which are typical here. In addition, the HITFET+ family is suitable for a vast range of other automotive applications such as mid-size and small-size electric motor drives for door lock or parking brake; injection valves for alternative fuel; flaps driving in HVAC; rear wheel steering applications and safetyClass X capacitors are used in “across-the-line” applications where their failure would not lead to electric shock. Class X safety caps are used between the “live” wires carrying the incoming AC current. In this position, a capacitor failure should not cause any electrical shock hazards, rather, a capacitor failure “between-the-lines” would usually cause a fuse or circuit breaker to open. relay replacement in active suspension systems.
The HITFET+ products are also suitable as protected drivers in a wide area of industrial applications such as printers; vacuum cleaners; solar power modules; and vending machines.
“Infineon invented the HITFET protected low-side switches more than two decades ago and established an industry standard. Our most recent HITFET+ family will provide the right low-side switch wherever over-temperature or over-current protection are needed in automotive and industrial applications,” says Andreas Doll, Vice President and General Manager, Body Power, Automotive Division, Infineon Technologies. “Depending on vehicle class, every car produced today has about 7 to 11 protected low-side power switches. With HITFET+ protection features and Infineon’s renowned quality and reliability, automotive system suppliers can be confident to meet even the most challenging application requirements.”