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| 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 & 3 / ( % o d w f k v r i w v w d u w ' , * , 7 $ / & 2 1 7 5 2 / 7 ( 0 3 ( 5 $ 7 8 5 ( 3 5 2 7 ( & 7 , 2 1 9 & & v w d u w 9 & & v w r s o d w f k u h v h w 2 7 3 v w r s v h w ' 5 9 9 2 9 3 d x [ ' 5 , 9 ( 5 * 1 ' 9 & & , 6 ( 1 6 ( 4 6 5 3 5 2 7 ( & 7 9 f f v l q n o d w f k 9 9 9 9 $ s u r w o r z f o r f n o l q e u r z q r x w 9 f w u o , s h d n 9 v r i w v w d u w , l q 9 2 9 3 d x [ 2 9 3 & 2 8 1 7 7 2 g u l y h u g u l y h u v w r s 2 6 & , / / $ 7 2 5 i u h t x h q f \ u h g x f w l r q v h w 0 2 ' 8 / $ 7 , 2 1 6 / 2 3 ( & 2 0 3 ( 1 6 $ 7 , 2 1 $ 1 $ / 2 * & 2 1 7 5 2 / 9 n & 7 5 / 9 f w u o , s h d n 9 f w u o , s h d n p 9 p v h f g h o d \ r y h u o r d g 2 9 ( 5 3 2 : ( 5 & 2 0 3 ( 1 6 $ 7 , 2 1 0 , 1 , 0 8 0 & 2 8 1 7 7 2 & 2 8 1 7 7 2 0 $ , 1 6 ' ( 7 ( & 7 , 2 1 u h v w d u w / p d [ / p d [ / p d [ / p d [ s u r w / p d [ s u r w 4 6 5 s r z h u g r z q s u r w o r z 2 7 3 r y h u o r d g e u r z q r x w p $ o d w f k o d w f k u h v h w 4 6 5 s u r w o r z 2 9 3 u h v w d u w 6 5 4 5 ( 6 7 $ 5 7 & 2 1 7 5 2 / u h v w d u w 9 f f v l q n s r z h u g r z q 9 9 & & v w d u w 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 3 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 6. pinning information 6.1 pinning 6.2 pin description 7. functional description 7.1 general control the TEA1732CTS contains a controller for a flyback circuit. a typical configuration is shown in figure 3 . fig 2. TEA1732CTS pin configuration , & 9 & & ' 5 , 9 ( 5 * 1 ' 3 5 2 7 ( & 7 & 7 5 / d d d , 6 ( 1 6 ( table 2. pin description symbol pin description vcc 1 supply voltage gnd 2 ground protect 3 protection and mains detect input ctrl 4 control input isense 5 current sense and accurate ovp input driver 6 gate driver output 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 4 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 7.2 start-up and underv oltage lockout (uvlo) initially, the capacitor on the vcc pin, c3, is charged from the high-voltage mains via resistor r1. as long as vcc is below v startup , the ic current consumption is low (10 ? a typical). when vcc reaches v startup , the ic first waits for the mains voltage to exceed the brownin level, and the protect pin to reach the v det(protect)(l) voltage. when both conditions are met, the ic starts switching. an internal so ft-start time of 3.5 ms allows the isense peak voltage to increase gradually to prevent audi ble noise. in a typical application, the auxiliary winding of the transforme r takes over the supply voltage. if a protection is triggered, the controller st ops switching. depending on the protection triggered, it either causes a restart or latches the converter to an off-state. the opp, uvlo, brownout, maximum duty c ycle, ovp, and external otp protections cause a save restart. the internal otp protection latches the converter to an off-state. a restart protection disables the switching of the ic. the supply voltage of the ic drops to the uvlo level. when the uvlo level is re ached, the ic switches to power-down mode, where it consumes a low supply current (10 ? a typical). the vcc capacitor is recharged via r1 until the vcc start-up level is reached. a delayed restart is performed to lower the average input power during a fault condition. depending on the cause of the restart protection, the restart sequence that disc harges and recharges the vcc capacitor is performed once or repeated three times, before switching recommences (see figure 4 ). when a latched protection is triggered, t he TEA1732CTS immediately enters power-down mode. the vcc pin is clamped to a voltage ju st above the latch protection reset voltage (v rst(latch) +0.9v). fig 3. TEA1732CTS typical configuration d d d , & , 6 ( 1 6 ( ' 5 , 9 ( 5 * 1 ' 9 & & 3 5 2 7 ( & 7 & 7 5 / ' & 5 5 5 5 ' ' ' & 7 6 5 2 & 2 = ' 5 5 5 & 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 5 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic when the voltage on pin vcc drops below the v th(uvlo) level during normal operation, the controller stops switching. th e TEA1732CTS waits for the rectified mains to charge the vcc pin using resistor r1. 7.3 supply management all internal reference voltages are derived from a temperature compensated on-chip band gap circuit. internal reference currents are derived from a trimmed and temperature compensated current reference circuit. 7.4 external overtemperature prot ection and mains detect input (pin protect) the protect input combines the functions of the external overtemperature protection (otp) and the mains voltage detection. an internal clock separates the period of measuring the mains voltage and the period of detecting external overtemperature protection (otp). in a typica l application, the protect pin is connected to the mains via a resistor. it is connected to ground via a negative temperature coefficient (ntc) thermistor and a diode. when measuring the mains voltage, the protec t pin is regulated to 0.25 v so that the external diode does not conduct any current. the current into the protect pin is measured and stored. once the measured current is above the brownin level, the system is allowed to start switching. if the mains voltage is continuously below the brownout level for at least 32 ms, a brownout is detected. the system immediately stops switching and performs a restart. the vcc capacitor is di scharged to the uvlo level and then charged to v startup once before switching recommences (see figure 5 ). fig 4. start-up sequence, normal operation and restart sequence d d d e u r z q l q u h f w l i l h g p d l q v 9 & & 3 5 2 7 ( & 7 , 6 ( 1 6 ( r x w s x w y r o w d j h r x w s x w o r d g 9 v w d u w x s 9 w k 8 9 / 2 9 g h w 3 5 2 7 ( & 7 p d [ l p x p o r d g u h v w d u w u h v w d u w g h o d \ v w d u w l q j f r q y h u w h u f k d u j l q j 9 & & f d s d f l w r u q r u p d o r s h u d w l r q r y h u s r z h u w l p h r x w v r i w v w d u w 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 6 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic when detecting the external temperature, a current of 84 ? a (typical) out of the protect pin flows through the external capacitor and the ntc thermistor. if the protect voltage at the end of the measuring period is below v det(protect) for four consecutive measuring cycles, the ic detects overtemperature and activates a latched protection. the offset due to the current from the mains is canceled internally by remembering the sinking current i in when measuring the mains voltage (see figure 6 ). the remembered current is also used as the input of high/low line compensation. an internal clamp of 4.1 v (typical) pr otects this pin from excessive voltages. 7.5 duty cycle control (pin ctrl) pin ctrl regulates the output power of the converter. this pin is connected to an internal voltage source of 5.4 v via an inter nal resistor (typical resistance: 7 k ? ). the ctrl pin voltage sets the peak current which is measured using the isense pin (see section 7.8 ). at low output power, the switching frequency is reduced (see section 7.11 ). the maximum duty cycle is limited to 80 % (typical). after eight consecutive converter strokes at ma ximum duty cycle the re start protection is activated. in a restart, the vcc capacitor is quickly discharged to the v th(uvlo) level and recharged to the start-up level from the high-voltage mains, before switching recommences. this occurs when th e mains input voltage is removed. 7.6 slope compensation (pin ctrl) a slope compensation circuit is integrated fo r ccm. the slope compensation guarantees stable operation for duty cycles exceeding 50 %. fig 5. mains detection fig 6. external overtemperature protection d d d 9 v w d u w x s 9 & & 3 5 2 7 ( & 7 ' 5 , 9 ( 5 u h f w l i l h g p d l q v y r o w d j h e u r z q l q e u r z r x w 9 w k 8 9 / 2 p v ! p v d d d 9 g h w 3 5 2 7 ( & 7 9 f o d p s 3 5 2 7 ( & 7 o l q o l q , 2 3 5 2 7 ( & 7 o d w f k h g s u r w h f w l r q o 3 5 2 7 ( & 7 9 3 5 2 7 ( & 7 $ 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 7 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 7.7 overpower timer a temporary overload situ ation is allowed. if v ctrl(ipeak) (see figure 1 ) set by pin ctrl exceeds 400 mv, an internal timer is started. if the overload situation continues to exist for more than 60 ms (typical), an overpo wer protection (opp) is triggered (see figure 7 ). the TEA1732CTS enters the overpower restar t mode when the overload time-out is reached. in overpower restart mode, the vcc capacitor is discharged to uvlo level and then charged to the start-up level three times before the converter switches again. 7.8 current mode control (pin isense) current mode control is used bec ause it ensures a good line regulation. pin isense senses the primary cu rrent across external resist or r6 and compares it with an internal control voltage. the internal control voltage is proportional to the ctrl pin voltage (see figure 8 ). fig 7. overpower delay d d d , q w h u q d o w l p h u 9 , 6 ( 1 6 ( 2 x w s x w y r o w d j h p 9 s u r w h f w l r q k l j k o r d g k l j k o r d g q r u p d o o r d g 7 l p h r x w o h y h o 2 x w s x w o r d g 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 8 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic leading edge blanking prevents false trig gering due to capacitive discharge when switching on the external power switch (see figure 9 ). 7.9 overvoltage protection (pin isense) accurate overvoltage protection can be re alized at the isense pin by sensing the auxiliary voltage. during the pr imary stroke, diode d4 (see figure 3 ) is blocked so that the converter still works under cu rrent mode control. during the secondary stroke, the isense voltage represents the output voltage via the resistor divider r5 and r3 (see figure 3 ). the isense voltage is sampled 2 ? s after the gate signal drops to avoid the ringing of the transformer. if the sampled voltage exceeds v ovp(isense) for four consecutive switching cycles, the ic triggers the latched protection. 7.10 overvoltage protection (pin vcc) an overvoltage protection (ovp) circuit is connected to the vcc pin. when the v cc exceeds v th(ovp) (30 v typical) for four consecutive switching cycles, the ic triggers the latched protection. when v cc drops below v th(ovp) before count = 4 is reached, the counter is reset to zero. fig 8. peak current control fig 9. leading edge blanking 9 & 7 5 / 9 d d d 9 f w u o o s h d n 9 i u h t x h q f \ u h g x f w l r q i u h t x h q f \ l q f u h d v h t leb v sense(max) v isense t 014aaa932 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 9 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 7.11 peak power, high-power and low-power operation during high-power operation, with the converter running at a 65 khz (typical) fixed frequency, the power is controlled by varying the peak current. a peak power mode is implemented to supply a short overload situation. in peak power mode, both frequency and peak current are increased. in low-power operation switchin g losses are reduced by lowering the switching frequency. the switching frequency of the converter is reduced while the peak current is set to 25 % of the maximum peak current (see figure 8 and figure 10 ). 7.12 overpower or high/ low line compensation the overpower compensation function can be used to realize a maximum output power which is nearly constant over the full inpu t mains. the overpower compensation circuit measures the input current on the protect pin and outputs a proportionally dependent current on the isense pin. the dc voltage across resistor r3 (see figure 3 ) limits the maximum peak current on the current sense resistor (see figure 11 ). at low output power levels, the overpower compensation circuit is switched off. fig 10. frequency control 9 & 7 5 / 9 d d d o r z s r z h u k l j k s r z h u s h d n s r z h u i r v f n + ] 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 10 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 7.13 driver (pin driver) the driver circuit to the gate of the power mosfet has a current so urcing capability of typically 300 ma and a current sink capability of typically 750 ma. this enables a fast turn-on and turn-off of the power mosfet for efficient operation. 7.14 overtemperature protection (otp) if the junction temperature exceeds the thermal shutdown limit, integrated overtemperature protection ensure s that the ic stops switching. otp is a latched protection. it can be reset by removing the voltage on pin vcc. fig 11. overpower compensation , 3 5 2 7 ( & 7 ? $ d d d o r s f , 6 ( 1 6 ( ? $ 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 11 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 8. limiting values [1] equivalent to discharging a 100 pf capacitor through a 1.5 k ? series resistor. 9. thermal characteristics table 3. limiting values in accordance with the absolute maximum rating system (iec 60134). symbol parameter conditions min max unit voltages v cc supply voltage continuous ? 0.4 +30 v t < 100 ms - 35 v v protect voltage on pin protect current limited ? 0.4 +5 v v ctrl voltage on pin ctrl ? 0.4 +5.5 v v isense voltage on pin isense current limited to 2ma ? 0.7 +5 v currents i vcc current on pin vcc ? <10% - 0.4 a i i(protect) input current on pin protect ? 1+1ma i ctrl current on pin ctrl ? 30 ma i isense current on pin isense ? 10 +0.5 ma i driver current on pin driver ? <10% ? 0.4 +1 a general p tot total power dissipation t amb <75 ?c - 0.29 w t stg storage temperature ? 55 +150 ?c t j junction temperature ? 40 +150 ?c esd v esd electrostatic discharge voltage class 1 human body model [1] - 4000 v changed device model -750v table 4. thermal characteristics symbol parameter conditions typ unit r th(j-a) thermal resistance from junction to ambient in free air; single layer jedec test board 259 k/w r th(j-c) thermal resistance from junction to case in free air; jedec test board 152 k/w 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 12 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 10. characteristics table 5. characteristics tamb = 25 ? c; vcc = 20 v; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the ic; unless otherwise specified. symbol parameter conditions min typ max unit supply voltage management (pin vcc) v startup start-up voltage 19.3 21.5 23.8 v v th(uvlo) undervoltage lockout threshold voltage 11.2 12.5 13.8 v v clamp(vcc) clamp voltage on pin vcc activated during latched protection; i cc =100 ? a -v rst(latch) +0.9 - v activated during latched protection, i cc =1ma -- v rst(latch) +3.5 v i cc(restart) restart supply current 1 2.5 - ma v hys hysteresis voltage v startup -v th(uvlo) 6.6 9.1 11.6 v i cc(startup) start-up supply current v cc 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 14 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic [1] the clamp voltage on the protect pin is lowered when the ic is in power-down mode. (latched or restart protection) i sink(driver) sink current on pin driver v driver = 2 v 0.25 0.3 - a v driver =10v 0.6 0.75 - a v o(driver)max maximum output voltage on pin driver 910.5 12 v overvoltage protection (pins vcc and isense) v ovp(vcc) overvoltage protection voltage on pin vcc 29 30 31 v v ovp(isense) overvoltage protection voltage on pin isense 2.4 2.5 2.6 v t blank(ovp)isense overvoltage protection blanking time on pin isense 1.7 2.1 2.5 ? s n cy(ovp) number of overvoltage protection cycles 44 4 temperature protection t pl(ic) ic protection level temperature 130 140 150 ?c table 5. characteristics ?continued tamb = 25 ? c; vcc = 20 v; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the ic; unless otherwise specified. symbol parameter conditions min typ max unit 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 15 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 11. application information a power supply with the TEA1732CTS is a fl yback converter operating in continuous conduction mode (see figure 12 ). capacitor c3 buffers the ic supply voltage, wh ich is powered via resistor r1 for start-up and via the auxiliary winding during normal operation. sens e resistor r6 converts the current through mosfet s1 into a voltage on pin isense. the value of resistor r6 defines the maximum primary peak current through mosfet s1. capacitor c2 is added to reduce noise on the ctrl pin. resistor r4 is requir ed to limit the current spikes to pin driver because of parasitic inductance of current sense resistor r6. resi stor r4 also dampen s possible oscillations of mosfet s1. adding a bead on the gate pin of mosfet s1 can be required to prevent local oscillations of the mosfet. fig 12. TEA1732CTS application diagram d d d , & , 6 ( 1 6 ( ' 5 , 9 ( 5 * 1 ' 9 & & 3 5 2 7 ( & 7 & 7 5 / ' & ? ) 5 n 5 n 5 0 5 ' ' ' & 7 6 5 n 2 & q ) 2 = ' 5 5 0 5 & ? ) 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 16 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 12. package outline fig 13. package outline sot457 (tsop6) 5 ( ) ( 5 ( 1 & ( 6 2 8 7 / , 1 ( 9 ( 5 6 , 2 1 ( 8 5 2 3 ( $ 1 3 5 2 - ( & 7 , 2 1 , 6 6 8 ( ' $ 7 ( , ( & - ( ' ( & - ( , 7 $ 6 2 7 6 & z % 0 e s ' h s l q l q g h [ $ $ / s 4 g h w d l o ; + ( ( y 0 $ $ % \ v f d o h f ; p p 3 o d v w l f v x u i d f h p r x q w h g s d f n d j h 7 6 2 3 o h d g v 6 2 7 8 1 , 7 $ e s f ' ( + ( / s 4 \ z y p p h ' , 0 ( 1 6 , 2 1 6 p p d u h w k h r u l j l q d o g l p h q v l r q v $ 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 17 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 13. revision history table 6. revision history document id release date data sheet status change notice supersedes TEA1732CTS v.1 20140318 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 18 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic 14. legal information 14.1 data sheet status [1] please consult the most recently issued document before initiating or completing a design. [2] the term ?short data sheet? is explained in section ?definitions?. [3] the product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple device s. the latest product status information is available on the internet at url http://www.nxp.com . 14.2 definitions draft ? the document is a draft versi on only. the content is still under internal review and subject to formal approval, which may result in modifications or additions. nxp semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall hav e no liability for the consequences of use of such information. short data sheet ? a short data sheet is an extract from a full data sheet with the same product type number(s) and title. a short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. for detailed and full information see the relevant full data sheet, which is available on request vi a the local nxp semiconductors sales office. in case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. product specification ? the information and data provided in a product data sheet shall define the specification of the product as agreed between nxp semiconductors and its customer , unless nxp semiconductors and customer have explicitly agreed otherwis e in writing. in no event however, shall an agreement be valid in which the nxp semiconductors product is deemed to offer functions and qualities beyond those described in the product data sheet. 14.3 disclaimers limited warranty and liability ? information in this document is believed to be accurate and reliable. however, nxp semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such info rmation. nxp semiconductors takes no responsibility for the content in this document if provided by an information source outside of nxp semiconductors. in no event shall nxp semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. notwithstanding any damages that customer might incur for any reason whatsoever, nxp semiconductors? aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the terms and conditions of commercial sale of nxp semiconductors. right to make changes ? nxp semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof. suitability for use ? nxp semiconductors products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an nxp semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. nxp semiconductors and its suppliers accept no liability for inclusion and/or use of nxp semiconducto rs products in such equipment or applications and therefore such inclusion and/or use is at the customer?s own risk. applications ? applications that are described herein for any of these products are for illustrative purpos es only. nxp semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. customers are responsible for the design and operation of their applications and products using nxp semiconductors products, and nxp semiconductors accepts no liability for any assistance with applications or customer product design. it is customer?s sole responsibility to determine whether the nxp semiconductors product is suitable and fit for the customer?s applications and products planned, as well as fo r the planned application and use of customer?s third party customer(s). customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. nxp semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer?s applications or products, or the application or use by customer?s third party customer(s). customer is responsible for doing all necessary testing for the customer?s applic ations and products using nxp semiconductors products in order to av oid a default of the applications and the products or of the application or use by customer?s third party customer(s). nxp does not accept any liability in this respect. limiting values ? stress above one or more limiting values (as defined in the absolute maximum ratings system of iec 60134) will cause permanent damage to the device. limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the recommended operating conditions section (if present) or the characteristics sections of this document is not warranted. constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. terms and conditions of commercial sale ? nxp semiconductors products are sold subject to the gener al terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms , unless otherwise agreed in a valid written individual agreement. in case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. nxp semiconductors hereby expressly objects to applying the customer?s general terms and conditions with regard to the purchase of nxp semiconducto rs products by customer. no offer to sell or license ? nothing in this document may be interpreted or construed as an offer to sell products t hat is open for acceptance or the grant, conveyance or implication of any lic ense under any copyrights, patents or other industrial or intellectual property rights. document status [1] [2] product status [3] definition objective [short] data sheet development this document contains data from the objecti ve specification for product development. preliminary [short] data sheet qualification this document contains data from the preliminary specification. product [short] data sheet production this document contains the product specification. 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 19 of 20 nxp semiconductors TEA1732CTS greenchip smps control ic export control ? this document as well as the item(s) described herein may be subject to export control regu lations. export might require a prior authorization from competent authorities. non-automotive qualified products ? unless this data sheet expressly states that this specific nxp semicon ductors product is automotive qualified, the product is not suitable for automotive use. it is neither qualified nor tested in accordance with automotive testing or application requirements. nxp semiconductors accepts no liabili ty for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. in the event that customer uses t he product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without nxp semiconductors? warranty of the product for such automotive applicat ions, use and specifications, and (b) whenever customer uses the product for automotive applications beyond nxp semiconductors? specifications such use shall be solely at customer?s own risk, and (c) customer fully indemnifies nxp semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive app lications beyond nxp semiconductors? standard warranty and nxp semiconduct ors? product specifications. translations ? a non-english (translated) version of a document is for reference only. the english version shall prevail in case of any discrepancy between the translated and english versions. 14.4 trademarks notice: all referenced brands, produc t names, service names and trademarks are the property of their respective owners. greenchip ? is a trademark of nxp semiconductors n.v. 15. contact information for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com nxp semiconductors TEA1732CTS greenchip smps control ic ? nxp semiconductors n.v. 2014. all rights reserved. for more information, please visit: http://www.nxp.com for sales office addresses, please se nd an email to: salesaddresses@nxp.com date of release: 18 march 2014 document identifier: TEA1732CTS please be aware that important notices concerning this document and the product(s) described herein, have been included in section ?legal information?. 16. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 pinning information . . . . . . . . . . . . . . . . . . . . . . 3 6.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 functional description . . . . . . . . . . . . . . . . . . . 3 7.1 general control . . . . . . . . . . . . . . . . . . . . . . . . . 3 7.2 start-up and undervoltage lockout (uvlo) . . 4 7.3 supply management. . . . . . . . . . . . . . . . . . . . . 5 7.4 external overtemper ature protection and mains detect input (pin protect) . . . . . . . . . 5 7.5 duty cycle control (pin ctrl). . . . . . . . . . . . . . 6 7.6 slope compensation (pin ctrl). . . . . . . . . . . . 6 7.7 overpower timer . . . . . . . . . . . . . . . . . . . . . . . . 7 7.8 current mode control (pin isense) . . . . . . . . . 7 7.9 overvoltage protection (pin isense) . . . . . . . . 8 7.10 overvoltage protection (pin vcc). . . . . . . . . . . 8 7.11 peak power, high-power and low-power operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.12 overpower or high/low line compensation . . . . 9 7.13 driver (pin driver) . . . . . . . . . . . . . . . . . . . . 10 7.14 overtemperature protection (otp) . . . . . . . . 10 8 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 11 9 thermal characteristics . . . . . . . . . . . . . . . . . 11 10 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 12 11 application information. . . . . . . . . . . . . . . . . . 15 12 package outline . . . . . . . . . . . . . . . . . . . . . . . . 16 13 revision history . . . . . . . . . . . . . . . . . . . . . . . . 17 14 legal information. . . . . . . . . . . . . . . . . . . . . . . 18 14.1 data sheet status . . . . . . . . . . . . . . . . . . . . . . 18 14.2 definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 14.3 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 14.4 trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 19 15 contact information. . . . . . . . . . . . . . . . . . . . . 19 16 contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 |
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