VPS12 Datasheet PDF

Sanyo Electric VPS12

the VPS12 has the three-channel configuration shown in the circuit diagram on page 2, we first consider a single channel. The chip temperatures of the transistors during operation can be determined from the following formula: Tj = (Tri) = θj-c (Tri) × Pc (Tri) + ∆Tc + Ta (°C) (1) θj-c (Tri): Thermal resistances of the transistor chips themselves Pc (Tri): Collector loss of the transistors ∆Tc: Increase in case temperature Ta: Ambient temperature The θj-c (Tri) for the individual transistors is: θj-c(Tr1) to (Tr4) = 35°C/W (2) Although the loss in each transistor in the video pack changes with frequency and thus are not identical, assuming a maximum frequency of 120 MHz (clock), the transistor with the largest...