TSM121 - STMicroelectronics

TSM121 SINGLE CHIP PWM & HOUSEKEEPING IC

The TSM121 integrated circuit incorporates all sensing circuit to regulate and protect from over voltage, under voltage and over current a multiple output power supply (12V, 5V, 3.3V). TSM121 incorporates all the necessary functions for proper PWM generation and pulse transformer drive to be adapted easily in the PC SMPS power supplies, and all the Housekeep.

Features

which allow safe operation in all conditions, and very high integration. TSM121 integrates two independent Voltage References which are uncommitted to ensure safe Regulation and Protection by the same chip. APPLICATION s Primary PWM and secondary housekeeping in PC/Server SMPS using Half Bridge topology January 2001 1/12 Free Datasheet http://www.datasheet4u.com/ TSM121 PIN DESCRIPTION Name Vcc Gnd Pin # 2 21 Type Power Supply Power Supply Function Positive Power Supply line. Ground. 0V Reference for all voltages. Housekeeping Vs12 Vs5 Vs33 Tuv EP 15 14 13 18 16 Analog input Analog input .