AN1514 VIPower：双输出降压或降压-升压型转换器使用VIPer12A-E/22A-E AN1514 Application note VIPower: double output buck or buck-boost converter using VIPer12A-E/22A-E Introduction This paper introduces two double output off-line non isolated SMPS based on the VIPerX2A-E family. The first SMPS is a Buck converter with two positive outputs and the second one is a Buck-Boost converter with two negative outputs. The use of VIPer12A-E or VIPer22A-E in both converters depends on the output power specifications. The power supplies are operated in off-line mode with an extended wide ……