HA17385HRP 查看數據表（PDF） - Hitachi -> Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

HA17385HRP

High Speed Current Mode PWM Control IC for Switching Power Supply

Hitachi -> Renesas Electronics 

HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP

A. Control in the case of heavy load

VCS

IS

B. Control in the case of light load

VCS

IS

As the load becomes heavy and the DC output decreases, the current sensing

level is raised as shown in A. above in order to increase the current in the switching

device in each cycle. When the load decreases, inverse control is carried out as

shown in B. above.

Figure 6 Primary Current Control of Transformer in Current Mode (Conceptual Diagram)

16

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