Can PI Expert help me with package choice and thermal evaluation?
PI Expert can be used in conjunction with AN-21, AN-26 and AN-29 to gain insight into package dissipation. In general, Y-packages and E-packages with suitable heatsinking should be considered when device dissipation exceeds approximately 1.5 W (open frame) or 1 W (adapter/enclosure); assuming a 50 °C ambient temperature. Thermal design can be further hindered by extreme operating temperatures, poor layout, high altitude, inefficient transformer design and/or airflow limitations. When used near maximum current capability, Power Integrations recommends a maximum operating junction (die) temperature of 110 °C for all TOPSwitch, TinySwitch, LinkSwitch and PeakSwitch products. This generally provides adequate design margin to the minimum device thermal shutdown, taking into account device and unit to unit variations. Back to Top V.
PI Expert can be used in conjunction with AN-21, AN-26 and AN-29 to gain insight into package dissipation. In general, Y-packages with suitable heatsinking should be considered when device dissipation exceeds approximately 1.5 W (open frame) or 1 W (adapter/enclosure); assuming a 50 °C ambient temperature. Thermal design can be further hindered by extreme operating temperatures, poor layout, high altitude, inefficient transformer design and/or airflow limitations. When used near maximum current capability, Power Integrations recommends a maximum operating junction (die) temperature of 110 °C for all TOPSwitch and TinySwitch-II products.
PI Expert can be used in conjunction with AN-21, AN-26 and AN-29 to gain insight into package dissipation. In general, Y-packages with suitable heatsinking should be considered when device dissipation exceeds approximately 1.5 W (open frame) or 1 W (adapter/enclosure); assuming a 50 °C ambient temperature. Thermal design can be further hindered by extreme operating temperatures, poor layout, high altitude, inefficient transformer design and/or airflow limitations. When used near maximum current capability, Power Integrations recommends a maximum operating junction (die) temperature of 110 °C for all TOPSwitch, TinySwitch, LinkSwitch and PeakSwitch products.
