DC-DC converter is the core of Brushless motor

DC-DC converter is the core of Brushless motor

220V AC voltage is rectified and filtered DC voltage to be 320V or so, add to the power module input. Single DC-DC module maximum output voltage is generally +48 V, +60 V DC to get the output voltage, the method must be used module in series. Design uses two PH600S280-28 DC-DC module (to +30 V output) through the series to get +60 V output voltage, fast recovery diodes D1, D2 is the protection devices in series, requiring D1, D2 reverse voltage greater than twice the rated output voltage power supply, power supply rated current greater than twice the output current, the forward voltage drop should be as small as possible. Because it is in series with two power supply module power supply system, in a limited package to complete the design will be difficult, and some program using two modules in series to complete the design package, namely the design of two separate 30V power supply, then an external series constitute the +60 V power supply system. Design through the rational allocation of space, power up and down in the lid of each installation of a DC-DC module to heat the metal shell as a means of compact design and installation of technology to the entire power system packaged in a smaller space, so that the whole power supply size, weight greatly reduced cross-sectional area of ​​only 6 × 9 inch 2, to achieve a small size high-power integrated power system design.