1. general description the TEA1732CTS is a low co st switched mode power supply (smps) controller ic intended for flyback topologies. the tea1 732cts operates in peak current and frequency control mode. frequency jitter has been implemented to reduce electromagnetic interference (emi). slope compensation is integrated for continuous conduction mode (ccm) operation. the TEA1732CTS ic features overpower protection (opp). the controller accepts an overpower situation for a limited amount of time. mains undervoltage protection (brownout), ou tput overvoltage protection (ovp), and overtemperature protection (otp) can be implemented using a minimal number of external components. at low-power levels, the primary peak current is set to 25 % of the maximum peak current. the switching frequency is reduced to limit th e switching losses. the combination of fixed frequency operation at high output power an d frequency reduction at low output power provides high efficiency over the total load range. the TEA1732CTS makes the design of low-cost, highly efficient and reliable supplies for power requirements up to 75 w easier by requiring a minimum number of external components. 2. features and benefits ? smps controller ic enablin g low-cost applications ? large input voltage range (12 v to 30 v) ? integrated overvoltage protection (ovp) on the vcc pin ? accurate overvoltage protecti on (ovp) via the isense pin ? very low supply current during start-up and restart (10 ? a typical) ? low supply current during normal operation (0.58 ma typical without load) ? internal overpower time-out ? overpower protection or high/low line compensation ? fixed switching frequency with frequency jitter to reduce emi ? frequency reduction with fixed minimum peak current to maintain high efficiency at low output power levels ? frequency increase at peak power operation ? slope compensation for ccm operation ? integrated soft-start TEA1732CTS greenchip smps control ic rev. 1 ? 18 march 2014 product data sheet
TEA1732CTS all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2014. all rights reserved. product data sheet rev. 1 ? 18 march 2014 2 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic ? low and adjustable overcurrent protection (ocp) trip level ? mains undervoltage protection (brownout) ? external overtemperature protection (otp) ? ic overtemperature protection 3. applications ? all applications that require an efficient and cost-effective power supply solution up to 75 w. 4. ordering information 5. block diagram table 1. ordering information type number package name description version TEA1732CTS/1 tsop6 plastic surface-mounted package; 6 leads sot457 fig 1. TEA1732CTS block diagram d d d % / $ 1 . 2 & |