PS235S

PS235S Version : A.002 Issue Date : 2007/09/10 File Name : SP-PS235S-A.002.doc Total Pages : 13 2-Channels Secondary Monitoring IC 9 7 1 SILICON TOUCH TECHNOLOGY INC. 9-7F-1, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax：886-3-5645626 PS235S PS235S 2-Channels Secondary Monitoring IC General Description PS235S is specially designed for two-channel power supply systems. It provides over-voltage protection, over-current protection, under-voltage protection, 5V/12V output control, over-temperature protection and timing control. PS235S makes external circuit implementation easy and meanwhile provides high performance. It is usually complex with discrete components. since PS235S has an internal timing control when output is protected with timing control. The problem is solved with an internal timing control in PS235S OVP/UVP (Over-Voltage/Under-Voltage protection) monitors 5V and 12V to protect the power supply system. When any output feedback loop error occurs, the output voltage will surge and thus cause damages on the system. With PS235S this problem can be avoided since The FPO signal state changes when the supply voltages exceeds their normal operation ranges. OCP (Over Current Protection) monitors IS5 and IS12 input currents. The OCP is composed of “Iref“ and “protection current range resistor”, and this adjustable over-current condition helps users to design OCP more easily. Features Two winding detect fun...