|
The most popular DC-DC converter topologies are also the
simplest - the flyback converter and the forward converter. Much of their simplicity is because they employ a single power transistor referenced to the primary-side return. Though these topologies are straightforward, they do have some significant drawbacks in many applications. In these situations, designers turn to more elegant topologies, such as the full-bridge and half-bridge converters. These topologies are complicated mainly by having to drive multiple power transistors, where one or more of the transistors is not referenced to the primary-side return. These converters require either a pulse transformer or an IC driver that can level-shift the ground-referenced pulsewidth modulator (PWM) signal to the half-bridge node. The Intersil HIP2100 driver IC simplifies the task of driving two MOSFETs connected in a half-bridge configuration. This small, fast, and low-cost driver is a better alternative to a pulse transformer or other driver ICs for most applications (up to 100V) requiring both a low-side and a high-side driver [1]. It enables higher switching frequencies in isolated DC-DC converters while maintaining high efficiency. This Application Note describes the design issues associated with a 50W two-switch forward converter featuring the HIP2100. This surface-mount DC/DC converter accepts a 48VDC input and provides 5VDC output. The fullload efficiency of the converter is 83% and the power density is 11W/in3. The HIP2100’s fast propagation delay times and 2A drive capability enables converter switching frequencies of 500kHz or higher without an exotic resonant or resonanttransition topology. The two-switch forward converter referenced design runs at 500kHz. 
I5Tb4GhT.pdf
(179.89 KB, 下载次数: 5
)
0
|
|
|
最近下载过的用户(2)
相关推荐
|
|
2983 浏览 0 评论
3732 浏览 0 评论
5723 浏览 0 评论
《电子工程师必备——九大系统电路识图宝典》之浅读负反馈以及四种组态
4332 浏览 0 评论
2801 浏览 0 评论
/6 
关注我们的微信
下载发烧友APP
电子发烧友观察
版权所有 © 湖南华秋数字科技有限公司
电子发烧友 （电路图） 湘公网安备 43011202000918 号 电信与信息服务业务经营许可证：合字B2-20210191
工商网监
湘ICP备2023018690号
2993
淘帖
48
