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请教下开关电源的解决方案

Other Parts Discussed in Thread: UC3843, TL3843

我现在需要一个开关电源的解决方案,输入是220v交流,输出有三路:+15V 0.5W  ,+5V 3.5W ,+-12V ,0.1W

请问选用哪种方案?成本较低,体积较小的。之前选用UC3843,但从其他人得到反馈说uc3843很少用于这么小的功率。

请教各位大牛~