DO810 3BSE008510R1 | ABB | Switching power supply circuit module

Description

DO810 3BSE008510R1 | ABB | Switching power supply circuit module

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B(max) = core saturation magnetic flux density (Gauss); Lp = primary inductance value (uH); Ip = primary peak current (A); Np = number of primary side (main coil) turns; Ae = core cross-sectional area (cm2)

DO810 3BSE008510R1 depends on the material of the iron Core and its own temperature, taking TDK Ferrite Core PC40 as an example, B(max) at 100℃ is 3900 Gauss, and the part error should be considered in the design, so it is generally between 3000 and 3500 Gauss. If the power designed for the Adapter(with a shell) should be taken about 3000 Gauss, to avoid the core due to high temperature saturation, generally speaking, the larger the size of the core, the higher the Ae, so you can do larger wattage Power.

DO810 3BSE008510R1 determines the primary filter capacitance:

The decision of the filter capacitance can determine the Vin(min) on the capacitor, the larger the filter capacitance, the higher the Vin(win), and the larger the wattage Power can be done, but the relative price is also higher.
Determine the Stress of MOSFET and secondary diode: according to the coil ratio relationship of the transformer, the Stress of the transformer can be preliminatively calculated whether it meets the specifications of the selected parts, and the input voltage is 264V(380V on the capacitor).

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