Power module is a development trend of ÷σswitching power supply. With±$ the development of power suppl• ™♠y technology, it is possible to realize modular↓ ization of switching powe∏±Ωφr supply. The power supply is v $ery important in the system design, because i"±©f the power supply is not good, it wil↓α☆l lead to the instability of tγ←he electronic equipment sys©♥tem. Let's discuss tΩ Ω•he design of the power module and briefly analyze"'¥↑ the future development trend.
In recent years, the÷✘ demand for power modules has continued to dev§≤¥elop in the direction of high power de★φ♠♥nsity, high efficiency, aγ₩™nd high current and low vo←↑✘ltage. The design of the isolatio∞≤$n module mainly adopts€$→ traditional circuit top÷¥φologies such as single-ended flyback, ∏↑™single-ended forward, combinβ'ation of forward and flyback, push-pull, bridge✘>✔λ conversion, etc. The non-isolated modu ♦βle adopts BUCK, BOOST, etc. Regarding high effici♠≥ ∑ency, in order to improve efficiencφπy, various soft-switch∑≤∏ing technologies can be combined, including pa≤→€↕ssive lossless soft-switching tec≈•±hnology, active soft-switching te♥™chnology, such as ZVS/ZCS resonanc®↑e, quasi-resonance, constant-frequency zero-®✘αswitching technology, zero-voltage, z ®γero-current Conversion technology £ δand synchronous rectification technology. Regar£♠<≤ding the large current, mu£π™lti-phase conversion can be used in order to incr∞↔←ease the output current.
In addition to developing new comε Ω→ponents and new technologies, how to combine an ≈δd optimize these existing technologies t'€ ₹o achieve high power density an®©d high efficiency is al γ'so a major challenge in module power >↕±supply design. Taking th<≠e brick power module as an examp>®×le, the current mainstreamβ↕↔ is the 1/8 brick power module. To further op↔™timize the 1/16 brick pow≈ er module products, the effici•"®∞ency must be further improved. ≥
In addition, the chang∞♠←e of power supply products from 1/8 brick to 1€↓★/16 brick is not only a matter✔≈' of volume, but the change of a pro★≤§↓duct involves many aspects. High power density α ×puts forward higher requirements for R&D, pr®'≠oduction process, quality assurance, etc. I'®★t is a difficult challenge to red±φ<φuce product volume while main♣taining high power output.
