View TEA1612T_9079445.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1. general description the TEA1612T is a monolithic integrated circuit implemented in a high-voltage double diffused metal oxide semiconductor (dmos) process. the circuit is a high voltage controller for a zero-voltage switching resonant converter. the ic provides the drive function for two discrete power mosfets in a half-bridge con?guration. it also includes a level-shift circuit, an oscillator with an accurately-programmable frequency range, a latched shut-down function, burst mode operation and a transconductance error ampli?er. the oscillator signal passes through a divide-by-two ?ip-?op before being fed to the output drivers in order to guarantee an accurate 50 % switching duty factor. the circuit is very ?exible and enables a broad range of applications for different mains voltages. 2. features n adjustable burst mode operation at low loads for low standby power n integrated high voltage level-shift function n integrated high voltage bootstrap diode n low start-up current n adjustable non-overlap time n internal over temperature protection (otp) n over current protection (ocp) that activates a shut-down timer TEA1612T zero voltage switching resonant converter controller rev. 01 24 september 2009 product data sheet fig 1. basic con?guration half- bridge circuit resonant converter TEA1612T v drv(hs) v dd mosfet switch bridge voltage supply (high side) signal ground power ground 014aaa825
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 2 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller n soft start timing pin n brown out (bo) detection n transconductance error ampli?er for ultra high-ohmic regulation feedback n latched shut-down circuit for over voltage protection (ovp) n adjustable minimum and maximum frequencies n under voltage lock out (uvlo) n fault latch reset input n wide (max. 20 v) supply voltage range n pfc-off output 3. applications n tv and monitor power supplies n high power adapter n pc power supplies n high voltage power supplies n of?ce equipment 4. ordering information table 1. ordering information type number package name description version TEA1612T so24 plastic small outline package; 24 leads; body width 7.5 mm sot137-1
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 3 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 5. block diagram fig 2. block diagram vaux reset hyst burst supply level shifter high side driver low side driver oscillator 19 18 600 mv 600 mv 2 16 6 21 7 8 9 10 11 12 15 v dd 14 sd ocp gh sh gl n.c. pgnd vdd(float) 2.33 v 0.3 v 22 20 4 5 css vco irs vref ifs cf 014aaa847 ct timer logic : 2 5 v 12.6 v 10k w gm 2.5 v 1.8 v 2.7 v 3 v start-up 16 pfc 1 sgnd 13 23 17 bo 2 24 p 3 1.25 v
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 4 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 6. pinning information 6.1 pinning 6.2 pin description fig 3. pin con?guration TEA1612T pfc burst bo hyst p vref vco sd css irs ct cf ocp ifs pgnd reset n.c. vaux sh v dd gh gl vdd(float) sgnd 014aaa824 1 2 3 4 5 6 7 8 9 10 11 12 14 13 16 15 18 17 20 19 22 21 24 23 table 2. pin description, proposal symbol pin description pfc 1 pfc-control output bo 2 brownout input p 3 error ampli?er non-inverting input vco 4 error ampli?er output css 5 soft start capacitor input ct 6 timer capacitor input ocp 7 overcurrent protection input pgnd 8 power ground n.c. 9 not connected [1] sh 10 high side switch source connection gh 11 high side switch gate connection vdd(float) 12 ?oating supply high side driver sgnd 13 signal ground gl 14 low side switch gate connection v dd 15 supply voltage vaux 16 auxiliary supply voltage reset 17 latch reset input ifs 18 oscillator discharge current input cf 19 oscillator capacitor irs 20 oscillator charge input current sd 21 shut-down input
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 5 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller [1] provided as a high voltage spacer 7. functional description 7.1 start-up when the applied voltage at pin v dd reaches v dd(init) (see figure 4 ), the low side power switch is turned-on while the high side power switch remains in the non-conducting state. this start-up output state guarantees the initial charging of the bootstrap capacitor (c boot ) used for the ?oating supply of the high side driver. during start-up, the voltage on the frequency capacitor (c f ) is zero and de?nes the start-up state. the voltage at the soft start pin (css) is set to 2.7 v. the css pin voltage is copied to the vco pin via a buffer and switching starts at about 80 % of the maximum frequency at the moment v dd reaches the start level. the start-up state is maintained until v dd reaches the start level (13.5 v), the oscillator is activated and the converter starts operating. vref 22 reference voltage hyst 23 hysteresis reference input for burst mode burst 24 burst comparator input table 2. pin description, proposal symbol pin description fig 4. start-up 014aaa036 v dd 0 0 0 gh-sh v dd(startup) v dd(init) t gl
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 6 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 7.2 oscillator the internal oscillator is a current-controlled oscillator that generates a sawtooth output. the frequency of the sawtooth is determined by the external capacitor c f and the currents ?owing into the ifs and irs pins. the minimum frequency and the non-overlap time are set by the capacitor c f and resistors r f(min) and r no . the maximum frequency is set by resistor r d f (see figure 7 ). the oscillator frequency is exactly twice the bridge frequency to achieve an accurate 50 % duty factor. an overview of the oscillator and driver signals is given in figure 5 . 7.3 non-overlap time resistor the non-overlap time resistor r no is connected between the 3 v reference pin vref, and the ifs current input pin (see figure 7 ). the voltage on the ifs pin is kept constant at a temperature independent value of 0.6 v. the current that ?ows into the ifs pin is determined by resistor's r no 2.4 v voltage drop divided by its value. the ifs input current equals 1/16 of the discharge current of capacitor c f and determines the falling slope of the oscillator. the falling slope time is used to create a non-overlap time (t no ) between two successive switching actions of the half-bridge switches: 7.4 minimum frequency resistor the r f(min) resistor is connected between the vref pin (3 v reference voltage) and the irs current input pin (held at a temperature independent voltage level of 0.6 v). the charge current of the capacitor c f is twice the current ?owing into the irs pin. fig 5. oscillator and driver signals 014aaa685 t non-overlap time (high to low) non-overlap time (low to high) cf gl 0 0 gh-sh i ifs 2.4v r no ----------- = t no c f d v cf 16 i ifs -------------------------- = t ifs t no =
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 7 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller the r f(min) resistor has a voltage drop of 2.4 v and its resistance de?nes the minimum charge current (rising slope) of the c f capacitor if the control current is zero. the minimum frequency is de?ned by this minimum charge current (i irs1 ) and the discharge current: 7.5 maximum frequency resistor the output voltage is regulated by changing the frequency of the half-bridge converter. the maximum frequency is determined by the r d f resistor which is connected between the error ampli?er output vco and the oscillator current input pin irs. the current that ?ows through the r d f resistor (i irs2 ) is added to the current ?owing through the r f(min) resistor. as a result, the charge current i cf increases and the oscillation frequency increases. as the falling slope of the oscillator is constant, the relationship between the output frequency and the charge current is not a linear function (see figure 6 and figure 7 ): the maximum output voltage of the error ampli?er and the value of r d f determine the maximum frequency: i irs1 2.4v r fmin () ----------------- = t irs1 c f d v cf 2i irs1 -------------------------- = f osc min () 1 t no t irs1 + ------------------------ - = f bridge min () f osc min () 2 --------------------- = i irs2 v vco 0.6 C r d f --------------------------- = t irs2 c f d v cf 2i irs1 i irs2 + () -------------------------------------------- - = i irs2 max () v vco max () 0.6 C r d f --------------------------------------- = t irs min () c f d v cf 2i irs2 i irs2 max () + () --------------------------------------------------------- = f osc max () 1 t osc ------------ - = f bridge max () f osc max () 2 ---------------------- = t osc t irs min () t ifs + =
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 8 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller bridge frequency accuracy is optimum in the low frequency region. at higher frequencies both the non-overlap time and the oscillator frequency show a decay. the frequency of the oscillator depends on the value of capacitor c f , the peak-to-peak voltage swing v cf , and the charge and discharge currents. however, at higher frequencies the accuracy decreases due to delays in the circuit. 7.6 error ampli?er the error ampli?er is a transconductance ampli?er. thus the output current at pin vco is determined by the ampli?er transconductance, the differential voltage on input pin p, and the internal reference voltage (2.5 v). the output current i vco is fed to the irs input of the current-controlled oscillator. the source capability of the error ampli?er increases current in the irs pin when the differential input voltage is positive. therefore the minimum current is determined by resistor r f(min) and the minimum frequency setting is independent of the characteristics of the error ampli?er. the error ampli?er has a maximum output current of 0.5 ma for an output voltage up to 2.5 v. if the source current decreases, the oscillator frequency also decreases resulting in a higher regulated output voltage. during start-up, the output voltage of the ampli?er is connected to the soft start (css) pin via a buffer. this will hold the vco pin at a constant value of v vco(start) . 7.7 soft start the css pin voltage is copied to the vco pin via a buffer. this buffer only has a source capability i.e. it can only charge the vco pin. this means that the error ampli?er output can increase the vco pin voltage above the css voltage level. fig 6. frequency range 014aaa038 0 f osc(max) f osc(start) f osc f osc(min) i irs
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 9 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller at start-up the soft start capacitor is charged to v vco(start) setting a start-up frequency of about 80 % of the maximum frequency. after start-up the external soft start capacitor is discharged by i start(soft) . the vco pin voltage follows the css voltage (discharging takes place via r d f ) and the frequency sweeps down. the css capacitor determines the frequency sweep rate. when the circuit comes into regulation, the error ampli?er output controls the vco pin voltage and the css voltage sweeps down further to zero volt. 7.8 vaux input the TEA1612T can start up either via a start-up bleeder resistor (connected to the high voltage and v dd ) or via the vaux input. in the latter case the internal 10 k w resistor (from vaux to v dd ) initiates charging of the v dd capacitor after which the series regulator takes over. the series regulator is active up to the moment that v dd equals v dd(reg) . further charging to v dd(startup) is done via the internal 10 k w resistor. in oscillation state the start-up resistor is no longer capable of delivering the v dd supply current, so an auxiliary supply (for instance, via an auxiliary winding or a dv/dt supply) needs to take over. the vaux input facilitates a series regulator which regulates its output voltage (= v dd ) to v dd(reg) . 7.9 burst mode in the application the amount of converted power can be estimated from the actual operating frequency: the higher the frequency, the lower the output power. this frequency is proportional to the feedback current to the irs pin which is measured via a sense resistor r fb2 (see figure 7 ). the actual feedback current equals 1/r fb2 (v burst - v irs ). when the voltage at the burst pin exceeds v ref(burst) , the TEA1612T output drivers (gl, gh) are made inactive (i.e. low). the output drivers are enabled again when the voltage at the burst pin falls below the preset voltage at the hyst pin. 7.10 shut-down the shut-down input on pin sd has an accurate threshold level of 2.33 v. when the voltage on input sd reaches 2.33 v, the TEA1612T enters shut-down mode. during shut-down mode, v dd is clamped by an internal zener diode at 12.0 v with 1 ma input current. this clamp prevents v dd rising above the rating of 14 v due to low supply current to the TEA1612T in shut-down mode. when the TEA1612T is in shut-down mode, it can only be activated again by lowering v dd to below the v dd(rst) level (typically 5.3 v) or by making the reset input active. the shut-down latch is then reset and a new start-up cycle can commence. in shut-down mode the gl pin is high and the gh pin is low. in this way the bootstrap capacitor remains charged so that after a reset a new cycle can start well de?ned. 7.11 latch reset input the internal shut-down latch can be reset via the reset input.this input is active low.
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 10 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 7.12 overcurrent protection and timer the ocp input continuously compares the voltage on pin ocp with v ref(ocp) . when the ocp pin voltage is higher than v ref(ocp) , the timer capacitor ct will be charged with i ch during the next full cf cycle or else the timer capacitor will be discharged with i leak . in case the ct voltage exceeds v trip(h)(ct) the TEA1612T will switch to shut-down mode. the timer capacitor will be discharged with i dch until the ct voltage reaches v trip(l)(ct) after which a soft start cycle is started. 7.13 overtemperature protection the TEA1612T continuously monitors its temperature. when the temperature exceeds the t otp(act) level, the TEA1612T will switch to the shut-down mode. 7.14 brownout protection the brownout protection compares the actual bo pin with the v trip(bo) voltage. if the bo voltage (see figure 7 ) is lower than v trip(bo) , the TEA1612T switches to start-up mode and activates an internal current source i bo(hys) to create a brownout hysteresis. when the bo pin voltage becomes larger than v trip(bo) , the TEA1612T will start-up again. 7.15 pfc disable function the pfc output pin is an open-drain output. operation of the pfc pin is internally enabled when the voltage on the bo pin is higher than v trip(bo) . when the voltage is lower than v trip(bo) , the pfc output is always in the open-drain state. the pfc output is pulled low when: ? the overtemperature protection is active. ? the ocp timer has timed out. ? the TEA1612T has been set to shut-down. ? during the off-time in burst mode. this pfc output signal can be used to switch off the power corrector in the application during burst mode (and during protection) to further reduce standby power losses.
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 11 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 8. limiting values [1] it is recommended that a 100 nf capacitor be placed as close as possible to the v dd pin (as indicated in figure 7 , and in the application note). [2] human body model class 2: equivalent to discharging a 100 pf capacitor through a 1.5 k w series resistor. [3] machine model class 2: equivalent to discharging a 200 pf capacitor through a 0.75 m h coil and 10 w resistor. 9. thermal characteristics table 3. limiting values in accordance with the absolute maximum rating system (iec 60134). symbol parameter conditions min max unit supply voltages v drv(hs) high-side driver voltage 0 600 v v dd supply voltage [1] 014v v aux auxiliary voltage [1] 020v voltages on pins p, sd, reset, ocp, bo, pfc, burst, hyst and ct v i input voltage 0 5 v currents i ifs current on pin ifs - 1 ? 16 ma i irs current on pin irs - 1 ma i vref current on pin vref - - 2ma power and temperature p tot total power dissipation t amb <70 c - 0.8 w t amb ambient temperature operating - 25 +70 c t stg storage temperature - 25 +150 c handling v esd electrostatic discharge voltage [2] - 2000 v [3] - 200 v table 4. thermal characteristics symbol parameter conditions typ unit r th(j-a) thermal resistance from junction to ambient in free air 100 k/w
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 12 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 10. characteristics table 5. characteristics all voltages are referred to the ground pins which must be connected externally; positive currents ?ow into the ic; v dd =13v and t amb =25 c; tested using the circuit shown in figure 7 , unless otherwise speci?ed. symbol parameter conditions min typ max unit high voltage pins vdd(float), gh and sh i leak leakage current v dd(?oat) , v gh and v sh = 600 v - - 30 m a supply pins v dd , vaux v dd(init) initial supply voltage low side on; high side off - 4 5 v v dd(startup) start-up supply voltage 12.9 13.4 13.9 v v dd(stop) stop supply voltage 9.0 9.4 9.8 v v dd(hys) hysteresis of supply voltage 3.8 4.0 4.2 v v dd(reg) regulation supply voltage v aux = 17 v - 12.6 - v v dd supply voltage v aux =17v, i vdd =50ma, oscillation state - 12.3 - v clamp voltage in shut-down state; low side on; high side off; i dd =1ma 11.0 12.0 13.0 v v dd(rst) reset supply voltage 4.5 5.6 6.3 v i dd supply current: low side on; high side off; c f = 100 pf; i ifs = 0.5 ma; i irs =50 m a; low side off; high side off; v dd =9v [1] start-up 210 260 310 m a operating - 2.0 - ma shut-down - 220 270 m a reference voltage on pin vref v ref reference voltage i ref = 0 ma 2.9 3.0 3.1 v i ref reference current source only - 2.0 - - ma z o output impedance i ref = - 1 ma - 5.0 - w tc temperature coef?cient i ref = 0 ma; t j =25 cto150 c- - 0.3 - mv/k current controlled oscillator pins irs, ifs, cf i ch(cf)min minimum charge current on pin cf i irs =15 m a; v cf =2v 283032 m a i ch(cf)max maximum charge current on pin cf i irs = 200 m a; v cf = 2 v 340 380 420 m a v irs voltage on pin irs i irs = 200 m a 590 620 650 mv i dch(cf)min minimum discharge current on pin cf i ifs =50 m a ? 16; v cf = 2 v 47 50 53 m a i dch(cf)max maximum discharge current on pin cf i ifs =1ma ? 16; v cf = 2 v 0.89 0.94 0.99 ma v ifs voltage on pin ifs i ifs =1ma ? 16 590 620 650 mv f bridge(min) minimum bridge frequency c f = 100 pf; i ifs = 0.5 ma ? 16; i irs =50 m a; f bridge = 156 167 178 khz f osc 2 ?
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 13 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller f bridge(max) maximum bridge frequency c f = 100 pf; i ifs = 1 ma ? 16; i irs = 200 m a; f bridge = [2] 395 440 485 khz v trip(l) low-level trip voltage pin cf; dc level - 1.27 - v v trip(h) high-level trip voltage pin cf; dc level - 2.97 - v v cf(p-p) peak-to-peak voltage on pin cf dc level 1.6 1.7 1.8 v t no non-overlap time c f = 100 pf; i ifs = 0.5 ma ? 16; i irs =50 m a 0.58 0.63 0.68 m s i dch(osc) /i ifs oscillator discharge current to current on pin ifs ratio i ifs = 0.5 ma ? 16; 14.4 16 17.6 - output drivers i source(gh) source current on pin gh high side; v dd(?oat) = 11.2 v; v sh =0v; v gh =0v - 300 - ma i sink(gh) sink current on pin gh high side; v dd(?oat) = 11.2 v; v sh =0v; v gh = 11.2 v - 480 - ma i source(gl) source current on pin gl low side; v gl = 0 v - 300 - ma i sink(gl) sink current on pin gl low side; v gl =13v - 580 - ma v oh high-level output voltage pin gh; high side; v dd(?oat) = 11.2 v; v sh =0v; i gh =10ma - 10.9 - v pin gl; low side; i gl = 10 ma - 12.6 - v v ol low-level output voltage pin gh; high side; v dd(?oat) = 11.2 v; v sh =0v; i gh =10ma - 0.17 - v pin gl; low side; i gl = 10 ma - 0.18 - v v fd(bs) bootstrap diode forward voltage i o = 5 ma 1.3 1.6 1.9 v shut-down input pin sd i i input current v sd = 2.33 v - - 0.5 m a v th(sd) threshold voltage on pin sd 2.26 2.33 2.40 v error ampli?er pins p, vco i i(cm) common-mode input current v i(cm) =1v - - 0.1 - 0.5 m a v i(cm) common-mode input voltage - - 2.5 v v i(offset) offset input voltage v i(cm) =1v; i vco = - 10 ma - 2 0 +2 mv g m transconductance v i(cm) = 1 v; source only - 330 - m a/mv g ol open-loop gain r l =10k w to gnd; v i(cm) =1v - 70 - db gb gain bandwidth product r l =10k w to gnd; v i(cm) =1v - 5 - mhz v vco(max) maximum vco voltage operating; r l =10k w to gnd 3.2 3.6 4.0 v i vco(max) maximum vco current operating; v vco =1v - 0.4 - 0.5 - 0.6 ma v vco(start) start vco voltage i vco = 0.3 ma 2.5 2.7 2.9 v table 5. characteristics continued all voltages are referred to the ground pins which must be connected externally; positive currents ?ow into the ic; v dd =13v and t amb =25 c; tested using the circuit shown in figure 7 , unless otherwise speci?ed. symbol parameter conditions min typ max unit f osc 2 ?
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 14 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller [1] the supply current i dd increases with the increasing bridge frequency to drive the capacitive load of two mosfets. typical mosfets for the TEA1612T application are 8n50 (nxp type phx80n50e, q g(tot) = 55 nc (typ) and these will increase the supply current at 150 khz according to the following formula: [2] the frequency of the oscillator depends on the value of capacitor c f , the peak-to-peak voltage swing v cf and the charge/discharge currents i ch(cf) and i dch(cf) . reset pin v rst reset voltage 2.15 2.4 2.65 v v rst(hys) hysteresis of reset voltage - 0.65 - v i i(rst) reset input current - - 1 m a css pin i start(soft) soft start current 12 15 18 m a ct pin i ch charge current 21 27 33 m a i dch discharge current 8 10 12 m a i leak leakage current 0.1 0.3 1 m a i ch /i dch charge current to discharge current ratio 2.4 2.7 3.0 m a v trip(h)(ct) high-level trip voltage on pin ct 2.7 3 3.3 v v trip(l)(ct) low-level trip voltage on pin ct 0.6 0.7 0.8 v ocp pin v ref(ocp) reference voltage on pin ocp 280 305 330 mv otp t otp(act) activation overtemperature protection temperature 120 135 150 c bo pin v trip(bo) brownout trip voltage 1.19 1.25 1.31 v i bo(hys) hysteresis of brownout current 14 16 18 m a burst pin v ref(burst) reference voltage on pin burst 1.75 1.8 1.85 v pfc pin i leak leakage current v pfc =1v --1 m a v sat saturation voltage i pfc = 1 ma - - 0.2 v hyst pin i leak leakage current v hyst =5v --1 m a table 5. characteristics continued all voltages are referred to the ground pins which must be connected externally; positive currents ?ow into the ic; v dd =13v and t amb =25 c; tested using the circuit shown in figure 7 , unless otherwise speci?ed. symbol parameter conditions min typ max unit d i dd 2q gtot () f bridge 2 55nc 150khz 16.5ma ===
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 15 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 11. application information fig 7. application diagram pfc controller reset vref vaux sgnd reset supply level shifter high side driver low side driver oscillator 19 18 600 mv 600 mv 2 16 6 21 7 8 9 10 11 12 15 v dd c vdd 14 sd v o v i ocp gh c vdd sh gl n.c. pgnd vdd(float) 2.33 v 0.3 v 22 20 4 5 css vco irs vref r no r d f r f(min) r fb2 r fb1 ifs c ss cf ct c t ovp c f timer logic : 2 5 v 1.25 v 12.6 v gm 2.5 v 2.7 v 3 v start-up 16 13 17 bo 2 pfc 1 p3 burst hyst 24 23 1.8 v a b 18 v on/off 014aaa848 tea1612
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 16 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 12. package outline fig 8. package outline sot137-1 (so24) unit a max. a 1 a 2 a 3 b p cd (1) e (1) (1) eh e ll p q z y w v q references outline version european projection issue date iec jedec jeita mm inches 2.65 0.3 0.1 2.45 2.25 0.49 0.36 0.32 0.23 15.6 15.2 7.6 7.4 1.27 10.65 10.00 1.1 1.0 0.9 0.4 8 0 o o 0.25 0.1 dimensions (inch dimensions are derived from the original mm dimensions) note 1. plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 1.1 0.4 sot137-1 x 12 24 w m q a a 1 a 2 b p d h e l p q detail x e z c l v m a 13 (a ) 3 a y 0.25 075e05 ms-013 pin 1 index 0.1 0.012 0.004 0.096 0.089 0.019 0.014 0.013 0.009 0.61 0.60 0.30 0.29 0.05 1.4 0.055 0.419 0.394 0.043 0.039 0.035 0.016 0.01 0.25 0.01 0.004 0.043 0.016 0.01 e 1 0 5 10 mm scale so24: plastic small outline package; 24 leads; body width 7.5 mm sot137-1 99-12-27 03-02-19
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 17 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 13. revision history table 6. revision history document id release date data sheet status change notice supersedes TEA1612T_1 20090924 product data sheet - -
TEA1612T_1 ? nxp b.v. 2009. all rights reserved. product data sheet rev. 01 24 september 2009 18 of 19 nxp semiconductors TEA1612T zero voltage switching resonant converter controller 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 de?nitions. [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 dev ices. the latest product status information is available on the internet at url http://www .nxp .com . 14.2 de?nitions draft the document is a draft version only. the content is still under internal review and subject to formal approval, which may result in modi?cations or additions. nxp semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have 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 via the local nxp semiconductors sales of?ce. in case of any inconsistency or con?ict with the short data sheet, the full data sheet shall prevail. 14.3 disclaimers general 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 information. right to make changes nxp semiconductors reserves the right to make changes to information published in this document, including without limitation speci?cations 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 medical, military, aircraft, space or life support 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 accepts no liability for inclusion and/or use of nxp semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customers own risk. applications applications that are described herein for any of these products are for illustrative purposes only. nxp semiconductors makes no representation or warranty that such applications will be suitable for the speci?ed use without further testing or modi?cation. limiting values stress above one or more limiting values (as de?ned in the absolute maximum ratings system of iec 60134) may cause permanent damage to the device. limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the characteristics sections of this document is not implied. exposure to limiting values for extended periods may affect device reliability. terms and conditions of sale nxp semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www .nxp .com/pro? le/ter ms , including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by nxp semiconductors. in case of any inconsistency or con?ict between information in this document and such terms and conditions, the latter will prevail. no offer to sell or license nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. export control this document as well as the item(s) described herein may be subject to export control regulations. export might require a prior authorization from national authorities. quick reference data the quick reference data is an extract of the product data given in the limiting values and characteristics sections of this document, and as such is not complete, exhaustive or legally binding. 14.4 trademarks notice: all referenced brands, product names, service names and trademarks are the property of their respective owners. 15. contact information for more information, please visit: http://www .nxp.com for sales of?ce addresses, please send an email to: salesad dresses@nxp.com document status [1] [2] product status [3] de?nition objective [short] data sheet development this document contains data from the objective speci?cation for product development. preliminary [short] data sheet quali?cation this document contains data from the preliminary speci?cation. product [short] data sheet production this document contains the product speci?cation.
nxp semiconductors TEA1612T zero voltage switching resonant converter controller ? nxp b.v. 2009. all rights reserved. for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com date of release: 24 september 2009 document identifier: TEA1612T_1 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 pinning information . . . . . . . . . . . . . . . . . . . . . . 4 6.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 7 functional description . . . . . . . . . . . . . . . . . . . 5 7.1 start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7.2 oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7.3 non-overlap time resistor . . . . . . . . . . . . . . . . . 6 7.4 minimum frequency resistor . . . . . . . . . . . . . . . 6 7.5 maximum frequency resistor. . . . . . . . . . . . . . . 7 7.6 error ampli?er . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7.7 soft start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7.8 vaux input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.9 burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.10 shut-down. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.11 latch reset input . . . . . . . . . . . . . . . . . . . . . . . . 9 7.12 overcurrent protection and timer . . . . . . . . . . 10 7.13 overtemperature protection . . . . . . . . . . . . . . 10 7.14 brownout protection . . . . . . . . . . . . . . . . . . . . 10 7.15 pfc disable function. . . . . . . . . . . . . . . . . . . . 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 de?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 14.3 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 14.4 trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 15 contact information. . . . . . . . . . . . . . . . . . . . . 18 16 contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

▲Up To Search▲

Price & Availability of TEA1612T

	To Download TEA1612T Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .