10W/20W电源UPS601/UPS602 DESCRIPTION The UTC UPS601 is designed to provide several special enhancements to satisfy the needs: Power-Saving mode for low standby power, Over Current Protection (OCP), Over Voltage Protection (OVP), Over Load Protection (OLP), UVLO, Over Temperature Protection (OTP) etc protection features. IC will be shutdown when either protection arise and can auto-restart. FEATURES * Low startup current 20uA typ * Fixed switching frequency(Normal is 70kHz) * Max duty cycle 70% * Power-saving mode for low power * Over temperature protection * Overload protection * Over voltage protection * Leading edge blanking * Soft start DIP-8 *Pb-free plating product number: UPS601L 特点: 一.UPS601和602与VIPER12A/VIPER22A之比较: 1. 不同点:UPS系列的启动电压低,启动电压与关断电压的范围宽,不容易出现打嗝现象。低启动功耗,和无噪音,工作频率高等。VIPER22A的短路保护不好,发热量大,散热不好。 2. 相同点:都具有过压,过载,短路,过温保护,静态功耗0.25W。 二.UPS601和602与THX201系列A之比较: THX201一般要在外面加用个13003三极管做功率开关管,UPS602则不用。THX202空载,轻载时叫声很大。保护电压和启动电压宽度比较小,容易出现保护现象。主要通过TL431上的分压电阻来调节输出电压,至于输出电流最大可以输出2A,通过输出负载来调节输出电流。THX201系列用在抵挡产品上,不适合出口。
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