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| 1. general description the greenchip?ii is the second generation of green switched mode power supply (smps) controller ics. its high level of integration allows the design of a cost effective power supply with a very low number of external components. the tea1532(a)p; tea1532(a)t can also be used in ?xed frequency, continuous conduction mode (ccm) converter designs for low voltage, high current applications. at low power (standby) levels, the system operates in cycle skipping mode which minimizes the switching losses during standby. the special built-in green functions allow the ef?ciency to be optimum at all power levels. this holds for quasi-resonant operation at high power levels, as well as ?xed frequency operation with valley switching at medium power levels. at low power (standby) levels, the system operates in cycle skipping mode with valley detection. the proprietary high voltage bcd800 process makes direct start-up possible from the recti?ed universal mains voltage in an effective and green way. a second low voltage bicmos ic is used for accurate, high speed protection functions and control. the tea1532(a)p; tea1532(a)t enables highly ef?cient and reliable supplies to be designed easily. 2. features 2.1 distinctive features n universal mains supply operation (70 v to 276 v ac) n high level of integration, resulting in a very low external component count n fixed frequency continuous conduction mode (ccm) operation capability n quasi-resonant (qr) discontinuous conduction mode (dcm) operation capability. 2.2 green features n valley or zero voltage switching for minimum switching losses in qr operation n cycle skipping mode at very low loads; input power < 300 mw at no-load operation for a typical adapter application n on-chip start-up current source. 2.3 protection features n safe restart mode for system fault conditions n zero current switch-on in qr mode tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic rev. 02 4 february 2005 product data sheet
9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 2 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic n undervoltage protection (foldback during overload) n ic overtemperature protection (otp) (latched) n low and adjustable overcurrent protection (ocp) trip level n soft (re)start n mains voltage-dependent operation-enabling level n tea1532ap and tea1532at: general purpose input for latched or safe restart protection and timing, e.g. to be used for overvoltage protection (ovp), output short-circuit protection or system otp. n tea1532p and tea1532t: general purpose input for latched protection and timing, e.g. to be used for ovp, output short-circuit protection or system otp. n brown-out protection. 3. applications n printer adapters and chargers. the device can also be used in all applications that demand an ef?cient and cost-effective solution up to 250 w. 4. ordering information table 1: ordering information type number package name description version tea1532t so8 plastic small outline package; 8 leads; body width 3.9 mm sot96-1 tea1532at tea1532p dip8 plastic dual in-line package; 8 leads (300 mil) sot97-1 tea1532ap 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 3 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 5. block diagram (1) switch s3 is not controlled in the tea1532t and tea1532p (?xed as drawn). fig 1. block diagram supply management internal supply uvlo start v m v cc 1 2 4 gnd s1 ctrl oscillator dcm and ccm detection logic logic brown-out protection soft start s2 over- temperature protection sq r uvlo q maximum on-time protection power-on reset - 1 valley 80 mv clamp driver start-up current source 0.5 v 6 sense 7 driver coa014 5 dem 8 drain ocp leb blank i ss i slopecomp 0.63 v sq r v cc < 4.5 v q - 50 mv i prot(dem) tea1532t tea1532at tea1532p tea1532ap osc_rdy duty_max slope compensation 5.6 v control detect i charge 3 protect 5.6 v i discharge 300 w protect detect 3 v 2.5 v s3 (1) dcm and ccm 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 4 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 6. pinning information 6.1 pinning 6.2 pin description 7. functional description the tea1532(a)p; tea1532(a)t is the controller of a compact ?yback converter, with the ic situated at the primary side. an auxiliary winding of the transformer provides demagnetization detection and powers the ic after start-up; see figure 4 . fig 2. pin con?guration: tea1532(a)t (sot96-1) fig 3. pin con?guration: tea1532(a)p (sot97-1) tea1532t tea1532at v cc drain gnd driver protect sense ctrl dem 001aaa829 1 2 3 4 6 5 8 7 tea1532p tea1532ap v cc drain gnd driver protect sense ctrl dem 001aaa828 1 2 3 4 6 5 8 7 table 2: pin description symbol pin description v cc 1 supply voltage gnd 2 ground protect 3 protection and timing input ctrl 4 control input dem 5 input from auxiliary winding for demagnetization timing sense 6 programmable current sense input driver 7 mosfet gate driver output drain 8 drain of the external mos switch, input for start-up current and valley sensing 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 5 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic the tea1532(a)p; tea1532(a)t can operate in multi modes; see figure 5 . in qr mode, the next converter stroke is started only after demagnetization of the transformer current (zero current switching), while the drain voltage has reached the lowest voltage to minimize switching losses (green function). the primary resonant circuit of primary inductance and drain capacitor ensures this quasi-resonant operation. the design can be optimized in such a way that zero voltage switching can extend over most of the universal mains range. to prevent very high frequency operation at lower loads, the quasi-resonant operation changes smoothly in ?xed frequency pulse width modulation (pwm) control. fig 4. typical con?guration fig 5. multi mode and ff-ccm operation coa015 1 c vcc c vin v i 2 3 4 8 7 6 5 tea1532t tea1532at tea1532p tea1532ap cycle skip fixed ff-ccm p (w) coa017 f (khz) 63 qr 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 6 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic in ?xed frequency continuous conduction mode, which can be activated by grounding pin dem, the internal oscillator determines the start of the next converter stroke. in both operating modes, a cycle skipping mode is activated at very low power (standby) levels. 7.1 start-up, mains enabling operation level and undervoltage lock out refer to figure 10 and figure 11 . initially, the ic is self supplying from the recti?ed mains voltage via pin drain. supply capacitor c vcc (at pin 1) is charged by the internal start-up current source to a level of about 4 v or higher, depending on the drain voltage. once the drain voltage exceeds the v m (mains-dependent operation-enabling level), the start-up current source will continue charging capacitor c vcc (switch s1 will be opened); see figure 1 . the ic will activate the power converter as soon as the voltage on pin v cc passes the v start level. at this moment the ic supply from the high voltage pin is stopped (green function). the ic supply is taken over by the auxiliary winding of the ?yback converter. the moment the voltage on pin v cc drops below v uvlo (undervoltage lock out), the ic stops switching and performs a safe restart from the recti?ed mains voltage. in the safe restart mode the driver output is disabled and pin v cc voltage is recharged via pin drain. 7.2 supply management all (internal) reference voltages are derived from a temperature compensated, on-chip band gap circuit. 7.3 current control mode current control mode is used for its good line regulation behavior. the on-time is controlled by an internal control voltage, which is compared with the primary current information. the primary current is sensed across an external resistor. the driver output is latched in the logic, preventing multiple switch-on. the internal control voltage is inversely proportional to the external pin ctrl voltage, with an offset of 1.5 v. this means that a voltage range from 1 v to approximately 1.5 v on pin ctrl will result in an internal control voltage range from 0.5 v to 0 v (a high external control voltage results in a low duty cycle). fig 6. the v sense(max) voltage as a function of v ctrl v ctrl (v) 1 v (typ) 0.52 v 1.5 v (typ) coa016 v sense(max) (v) cycle skip active 25 mv 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 7 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 7.4 oscillator the ?xed frequency of the oscillator is set by an internal current source and capacitor. 7.5 cycle skipping at very low power levels, a cycle skipping mode activates. an internal control voltage (v sense(max) ) lower than 25 mv will inhibit switch-on of the external power mosfet until this voltage increases to a higher value; see figure 6 . 7.6 demagnetization (qr operation) the system will be in discontinuous conduction mode (dcm) (qr operation) when resistor r dem is applied. the oscillator will not start a new primary stroke until the previous secondary stroke has ended. demagnetization features a cycle-by-cycle output short-circuit protection which immediately reduces the frequency (longer off-time), thereby reducing the power level. demagnetization recognition is suppressed during the ?rst t supp time (typical 1.5 m s). this suppression may be necessary in applications where the transformer has a large leakage inductance and at low output voltages or start-up. 7.7 continuous conduction mode (ccm) it is also possible to operate the ic in the so-called fixed frequency continuous conduction mode (ff ccm). this mode is activated by connecting pin dem to ground and connecting pin drain to the recti?ed v i voltage; see figure 13 . 7.8 overcurrent protection (ocp) the primary current in the transformer is measured accurately by the internal cycle-by-cycle source current limit circuit using the external sense resistor r sense . the accuracy of the current limit circuit allows the transformer core to have a minimum speci?cation for the output power required. the ocp circuit limits the sense voltage to an internal level (the primary peak current in the transformer is also limited). the ocp detection is suppressed during the leading edge blanking period, t leb generated by the leading edge blanking (leb) circuit, to prevent false triggering caused by the switch-on spikes. 7.9 control pin protection if pin ctrl becomes open-circuit or is disconnected, a fault condition is assumed and the converter will stop switching immediately. operation recommences when the fault condition is removed. 7.10 adjustable slope compensation a slope compensation function has been added at pin ctrl; see figure 7 . the slope compensation function prevents sub-harmonic oscillation in ccm at duty cycles over 50 %. the ctrl voltage is modulated by sourcing a (non-constant) current out of pin ctrl and by adding externally a series resistor r slopecomp . this increases the ctrl voltage proportionally with the on-time, which therefore limits the ocp level. a longer on-time results in a higher ctrl voltage, this increase in ctrl voltage will decrease the 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 8 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic on-time. slope compensation can be adjusted by changing the value of r slopecomp . slope compensation prevents modulation of the on-time (duty cycle) while operating in ff ccm. a possible drawback of sub-harmonic oscillation can be output voltage ripple. the source current of pin ctrl is always active. in qr mode, the r slopecomp resistor is replaced by a short, so the modulation of the ctrl voltage is almost negligible. 7.11 minimum and maximum on-time the minimum on-time of the smps is determined by the leb time (typical 400 ns). the ic limits the on-time to a maximum time which is dependent on the mode of operation: qr mode: when the system requires an on-time of more than 25 m s, a fault condition is assumed, the ic stops switching and enters the safe restart mode. ccm: the driver duty cycle is limited to 70 %. so the maximum on-time is correlated to the oscillator time which results in an accurate limit of the minimum input voltage of the ?yback converter. 7.12 protect and timing input the protect input (pin 3) is a multi-purpose (high-impedance) input, which can be used to switch off the ic and create a relatively long timing function. as soon as the voltage on this pin rises above 2.5 v, switching stops immediately. for the timing function, a current of typically 50 m a ?ows out of pin protect and charges an external capacitor until the activation level of 2.5 v is reached. this current source is only activated when the converter is not in regulation, which is detected by the voltage on pin ctrl (v ctrl < 0.63 v). a (small) discharge current is also implemented to ensure that the capacitor is not charged, for example, by spikes a mosfet switch is added to discharge the external capacitor and ensure a de?ned start situation. for the tea1532ap and the tea1532at, the voltage on pin ctrl determines whether the ic enters latched protection mode, or safe restart protection mode: fig 7. slope compensation 001aaa830 ctrl - 1 slope compensation current 0.63 v control detect 5.6 v 4 r ctrl r slopecomp 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 9 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic ? when the voltage on pin ctrl is below 0.63 v, the ic is assumed to be out of regulation (e.g. the control loop is open). in this case activating pin protect (v protect > 2.5 v) will cause the converter to stop switching. once v cc drops below v uvlo , capacitor c vcc will be recharged and the supply will restart. this cycle will be repeated until the fault condition is removed (safe restart mode). ? when the voltage on pin ctrl is above 0.63 v, the output is assumed to be in regulation. in this case activating pin protect (v protect > 2.5 v), by external means, will activate the latch protection of the ic: the voltage on pin v cc will cycle between v start and v uvlo , but the ic will not start switching again until the latch protection is reset. the latch is reset as soon as v cc drops below 4.5 v (typical value) (this only occurs when the mains has been disconnected). the internal overtemperature protection will also trigger this latch; see also figure 1 . for the tea1532p and the tea1532t the ic always enters the latched mode protection independent of the voltage on pin ctrl. a voltage higher than 3 v on pin protect will always latch the ic. this is independent of the state of the ic. 7.13 valley switching refer to figure 8 . a new cycle starts when the power switch is activated. after the on-time (determined by the sense voltage and the internal control voltage), the switch is opened and the secondary stroke starts. after the secondary stroke, the drain voltage shows an oscillation with a frequency of approximately where l p is the primary self inductance of the transformer and c d is the capacitance on the drain node. as soon as the oscillator voltage is high again and the secondary stroke has ended, the circuit waits for the lowest drain voltage before starting a new primary stroke. this method is called valley detection. figure 8 shows the drain voltage, valley signal, secondary stroke signal and the oscillator signal. in an optimum design, the re?ected secondary voltage on the primary side will force the drain voltage to zero. thus, zero voltage switching is possible, preventing large capacitive switching losses , and allowing high frequency operation, which results in small and cost effective magnetics. 1 2 p l p c d ------------------------------------------ p 1 2 -- - cv 2 f = ? ?? 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 10 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 7.14 brown-out protection during the so called brown-out test, the input voltage is slowly decreased. since the on-time depends on v i , long on-times at low v i can damage the (external) power device. this is prevented by stopping the converter when the input voltage drops too low. when the voltage on pin dem drops below - 50 mv during the on-time (qr mode), the maximum on-time is set to 25 m s. the maximum on-time will be reached while v i is low. subsequently, the ic stops switching and v cc drops below v uvlo . capacitor c vcc will only be recharged and the supply will restart only when voltage v i is high enough (v m , also see section 7.1 ). in addition to this, a v i level at which the converter has to enter a safe restart can be set with a demagnetization resistor. during the primary stroke, the recti?ed mains input voltage is measured by sensing the current drawn from pin dem. this current depends on the mains voltage, according to the following formula: where: the latter function requires an on-time of at least 2 m s. this on-time ensures that a reliable demagnetization current can be measured. (1) start of new cycle at lowest drain voltage. (2) start of new cycle in a classical pwm system at high drain voltage. fig 8. signals for valley switching drain secondary stroke mgu235 secondary ringing primary stroke valley (2) (1) secondary stroke oscillator i dem () v aux r dem -------------- - nv mains r dem -------------------------- ?? n n aux n p ----------- - = 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 11 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic when pin dem is grounded (ccm), the brown-out protection is disabled. in this case the duty cycle is limited to 0.7, so at low mains voltage the on-time is limited and therefore the dissipation in the fet is limited. 7.15 overtemperature protection (otp) the ic provides accurate otp. the ic will stop switching when the junction temperature exceeds the thermal shutdown temperature. when v cc drops to v uvlo , capacitor c vcc will be recharged to the v start level, however switching will not restart. subsequently, v cc will drop again to v uvlo , etc. operation only recommences when v cc drops below a level of about 4.5 v (typically, when v mains is disconnected for a short period). 7.16 soft start-up (pin sense) to prevent transformer rattle at start-up or during hiccup, the transformer peak current is slowly increased by the soft start function. this can be achieved by inserting a resistor and a capacitor between pin sense (pin 6) and sense resistor r sense . an internal current source charges the capacitor to v sense =i ss r ss (about 0.5 v maximum). the start level and the time constant of the increasing primary current level can be adjusted externally by changing the values of r ss and c ss . during the start-up phase, the charging current i ss will ?ow as long as the voltage on pin sense is below approximately 0.5 v. if the voltage on pin sense exceeds 0.5 v, the soft start current source will start limiting current i ss . at v start , the i ss current source is completely switched off; see figure 9 . since the soft start current i ss is subtracted from pin v cc charging current, the r ss value will affect v cc charging current level by a maximum of 60 m a (typical). fig 9. soft start-up i primary(max) v ocp i ss r ss () C r sense ----------------------------------------- - = t r ss c ss = c ss r ss sense r sense i ss v ocp start-up mgu237 6 0.5 v 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 12 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 7.17 driver the driver circuit to the gate of the power mosfet has a current sourcing capability of typically 170 ma and a current sink capability of typically 700 ma at v cc of 9.5 v. at v cc = 15 v, the current sourcing capability is typically 300 ma and the current sink capability typically 1.2 a. this permits fast turn-on and turn-off of the power mosfet for ef?cient operation. a low driver source current has been chosen to limit the d v/ d t at switch-on. this reduces electro magnetic interference (emi) and also limits the current spikes across r sense . 8. limiting values [1] equivalent to discharging a 100 pf capacitor through a 1.5 k w series resistor. [2] equivalent to discharging a 200 pf capacitor through a 0.75 m h coil and a 10 w resistor. table 3: limiting values in accordance with the absolute maximum rating system (iec 60134). all voltages are measured with respect to ground (pin 2); positive currents ?ow into the chip; pin v cc may not be current driven. the voltage ratings are valid provided other ratings are not violated; current ratings are valid provided the maximum power rating is not violated. symbol parameter conditions min max unit voltages v cc supply voltage continuous - 0.4 +20 v v protect voltage on pin protect continuous - 0.4 +5 v v ctrl voltage on pin ctrl - 0.4 +5 v v dem voltage on pin dem current limited - - v v sense voltage on pin sense current limited - 0.4 - v v drain voltage on pin drain - 0.4 +650 v currents i ctrl current on pin ctrl d < 10 % - 50 ma i dem current on pin dem - 1000 +250 m a i sense current on pin sense - 1 +10 ma i driver current on pin driver d < 10 % - 0.8 +2 a i drain current on pin drain - 5 ma general p tot total power dissipation t amb <70 c so8 package - 0.5 w dip8 package - 0.75 w t stg storage temperature - 55 +150 c t j junction temperature - 20 +145 c esd v esd electrostatic discharge voltage class 1 human body model pins 1 to 7 [1] - 2000 v pin 8 (drain) [1] - 1500 v machine model [2] - 200 v 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 13 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 9. thermal characteristics 10. characteristics table 4: thermal characteristics symbol parameter conditions typ unit r th(j-a) thermal resistance from junction to ambient in free air; so8 package 150 k/w in free air; dip8 package 95 k/w table 5: characteristics t amb =25 c; v cc = 15 v; all voltages are measured with respect to ground (pin 2); currents are positive when ?owing into the ic; unless otherwise speci?ed. symbol parameter conditions min typ max unit start-up current source (pin drain) i drain supply current drawn from pin drain v drain > 100 v v cc = 0 v 1.0 1.2 1.4 ma with auxiliary supply - 100 300 m a v b breakdown voltage 650 - - v v m mains-dependent operation-enabling level 60 - 100 v supply voltage management (pin v cc ) v start start-up voltage 10.3 11 11.7 v v uvlo lock-out undervoltage 8.1 8.7 9.3 v v hys hysteresis voltage v start - v uvlo 2.0 2.3 2.6 v i ch(h) high charging current v drain > 100 v; v cc <3v - 1.2 - 1 - 0.8 ma i ch(l) low charging current v drain > 100 v; 3v 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 15 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic [1] tea1532ap and tea1532at: safe restart; tea1532p and tea1532t: latch. [2] guaranteed by design. [3] v i detection level. set by the demagnetization resistor r dem ; see section 7.14 . [4] valid for v cc >2v. 11. application information a converter with the tea1532(a)p; tea1532(a)t consists of an input ?lter, a transformer with a third winding (auxiliary), and an output stage with a feedback circuit. capacitor c vcc buffers the ic supply voltage, which is powered via the internal current source, that is connected to the recti?ed mains, during start-up and via the auxiliary winding during operation. a sense resistor r sense converts the primary current into a voltage at pin sense. the value of r sense de?nes the maximum primary peak current. figure 10 shows a ?yback con?guration using the discontinuous conduction mode. pin protect is used in this example for external overvoltage protection and open loop or output short-circuit protection. if this pin is not used, it must be tied to ground. figure 13 shows a ?yback con?guration using the continuous conduction mode. pin protect is used in this example for external overtemperature protection and open loop or output short-circuit protection. temperature protection t prot(max) maximum temperature protection level 130 140 150 c t prot(hyst) hysteresis for the temperature protection level [4] -8- c table 5: characteristics continued t amb =25 c; v cc = 15 v; all voltages are measured with respect to ground (pin 2); currents are positive when ?owing into the ic; unless otherwise speci?ed. symbol parameter conditions min typ max unit 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 16 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic fig 10. flyback con?guration using the discontinuous conduction mode 1 2 3 4 v cc v mains v i r ctrl r dem r sense gnd protect ctrl drain power mosfet sense dem 8 7 6 5 driver r ss c ss coa011 tea1532t tea1532at tea1532p tea1532ap 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 17 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic (1) in ccm, the brown-out protection is implemented by the maximum duty cycle in combination with pin protect. fig 11. typical waveforms 1 001aaa840 v driver v protect start-up sequence normal operation ovp (tea1532a) normal operation output short-circuit (tea1532a) brown-out (1) v cc v start v o v drain v i v i v uvlo 2.5 v 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 18 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic (1) when v protect is forced above 3 v, the protection is always latched. so the ic is not started at v start unless the v cc voltage drops below the v cc(reset) level. this is the same action used for external otp compensation described in section 7.15 . (2) external otp for tea1532t, tea1532p, tea1532at and tea1532ap; ovp and output short circuit for tea1532p and tea1532t. fig 12. typical waveforms 2 001aaa841 v driver v protect (1) start-up sequence normal operation v cc v start v o v drain v i v i v uvlo 2.5 v protection active (2) 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 19 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 12. test information 12.1 quality information the general quality speci?cation for integrated circuits, snw-fq-611 is applicable. (1) pin protect is used in this example for external otp and open loop or output short-circuit protection. slope compensation is determined by the value of r slopecomp . fig 13. flyback con?guration using the continuous conduction mode tea1532t tea1532at tea1532p tea1532ap 1 2 3 4 v cc v mains v i r ctrl r sense gnd protect (1) ctrl drain power mosfet sense dem 8 7 6 5 driver r ss c ss coa013 r slopecomp 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 20 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 13. package outline fig 14. package outline sot96-1 (so8) unit a max. a 1 a 2 a 3 b p cd (1) e (2) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm inches 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 5.0 4.8 4.0 3.8 1.27 6.2 5.8 1.05 0.7 0.6 0.7 0.3 8 0 o o 0.25 0.1 0.25 dimensions (inch dimensions are derived from the original mm dimensions) notes 1. plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 2. plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. 1.0 0.4 sot96-1 x w m q a a 1 a 2 b p d h e l p q detail x e z e c l v m a (a ) 3 a 4 5 pin 1 index 1 8 y 076e03 ms-012 0.069 0.010 0.004 0.057 0.049 0.01 0.019 0.014 0.0100 0.0075 0.20 0.19 0.16 0.15 0.05 0.244 0.228 0.028 0.024 0.028 0.012 0.01 0.01 0.041 0.004 0.039 0.016 0 2.5 5 mm scale so8: plastic small outline package; 8 leads; body width 3.9 mm sot96-1 99-12-27 03-02-18 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 21 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic fig 15. package outline sot97-1 (dip8) references outline version european projection issue date iec jedec jeita sot97-1 99-12-27 03-02-13 unit a max. 12 b 1 (1) (1) (1) b 2 cd e e m z h l mm dimensions (inch dimensions are derived from the original mm dimensions) a min. a max. b max. w m e e 1 1.73 1.14 0.53 0.38 0.36 0.23 9.8 9.2 6.48 6.20 3.60 3.05 0.254 2.54 7.62 8.25 7.80 10.0 8.3 1.15 4.2 0.51 3.2 inches 0.068 0.045 0.021 0.015 0.014 0.009 1.07 0.89 0.042 0.035 0.39 0.36 0.26 0.24 0.14 0.12 0.01 0.1 0.3 0.32 0.31 0.39 0.33 0.045 0.17 0.02 0.13 b 2 050g01 mo-001 sc-504-8 m h c (e ) 1 m e a l seating plane a 1 w m b 1 e d a 2 z 8 1 5 4 b e 0 5 10 mm scale note 1. plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. pin 1 index dip8: plastic dual in-line package; 8 leads (300 mil) sot97-1 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 22 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 14. soldering 14.1 introduction this text gives a very brief insight to a complex technology. a more in-depth account of soldering ics can be found in our data handbook ic26; integrated circuit packages (document order number 9398 652 90011). there is no soldering method that is ideal for all ic packages. wave soldering is often preferred when through-hole and surface mount components are mixed on one printed-circuit board. wave soldering can still be used for certain surface mount ics, but it is not suitable for ?ne pitch smds. in these situations re?ow soldering is recommended. driven by legislation and environmental forces the worldwide use of lead-free solder pastes is increasing. 14.2 through-hole mount packages 14.2.1 soldering by dipping or by solder wave typical dwell time of the leads in the wave ranges from 3 seconds to 4 seconds at 250 c or 265 c, depending on solder material applied, snpb or pb-free respectively. the total contact time of successive solder waves must not exceed 5 seconds. the device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the speci?ed maximum storage temperature (t stg(max) ). if the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. 14.2.2 manual soldering apply the soldering iron (24 v or less) to the lead(s) of the package, either below the seating plane or not more than 2 mm above it. if the temperature of the soldering iron bit is less than 300 c it may remain in contact for up to 10 seconds. if the bit temperature is between 300 c and 400 c, contact may be up to 5 seconds. 14.3 surface mount packages 14.3.1 re?ow soldering re?ow soldering requires solder paste (a suspension of ?ne solder particles, ?ux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. several methods exist for re?owing; for example, convection or convection/infrared heating in a conveyor type oven. throughput times (preheating, soldering and cooling) vary between 100 seconds and 200 seconds depending on heating method. typical re?ow peak temperatures range from 215 cto270 c depending on solder paste material. the top-surface temperature of the packages should preferably be kept: ? below 225 c (snpb process) or below 245 c (pb-free process) C for all bga, htsson..t and ssop..t packages 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 23 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic C for packages with a thickness 3 2.5 mm C for packages with a thickness < 2.5 mm and a volume 3 350 mm 3 so called thick/large packages. ? below 240 c (snpb process) or below 260 c (pb-free process) for packages with a thickness < 2.5 mm and a volume < 350 mm 3 so called small/thin packages. moisture sensitivity precautions, as indicated on packing, must be respected at all times. 14.3.2 wave soldering conventional single wave soldering is not recommended for surface mount devices (smds) or printed-circuit boards with a high component density, as solder bridging and non-wetting can present major problems. to overcome these problems the double-wave soldering method was speci?cally developed. if wave soldering is used the following conditions must be observed for optimal results: ? use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. ? for packages with leads on two sides and a pitch (e): C larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; C smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. the footprint must incorporate solder thieves at the downstream end. ? for packages with leads on four sides, the footprint must be placed at a 45 angle to the transport direction of the printed-circuit board. the footprint must incorporate solder thieves downstream and at the side corners. during placement and before soldering, the package must be ?xed with a droplet of adhesive. the adhesive can be applied by screen printing, pin transfer or syringe dispensing. the package can be soldered after the adhesive is cured. typical dwell time of the leads in the wave ranges from 3 seconds to 4 seconds at 250 c or 265 c, depending on solder material applied, snpb or pb-free respectively. a mildly-activated ?ux will eliminate the need for removal of corrosive residues in most applications. 14.3.3 manual soldering fix the component by ?rst soldering two diagonally-opposite end leads. use a low voltage (24 v or less) soldering iron applied to the ?at part of the lead. contact time must be limited to 10 seconds at up to 300 c. when using a dedicated tool, all other leads can be soldered in one operation within 2 seconds to 5 seconds between 270 c and 320 c. 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 24 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 14.4 package related soldering information [1] for more detailed information on the bga packages refer to the (lf)bga application note (an01026); order a copy from your philips semiconductors sales of?ce. [2] all surface mount (smd) packages are moisture sensitive. depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vapori zation of the moisture in them (the so called popcorn effect). for details, refer to the drypack information in the data handbook ic26; integrated circuit packages; section: packing methods . [3] for sdip packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board. [4] hot bar soldering or manual soldering is suitable for pmfp packages. [5] these transparent plastic packages are extremely sensitive to re?ow soldering conditions and must on no account be processed through more than one soldering cycle or subjected to infrared re?ow soldering with peak temperature exceeding 217 c 10 c measured in the atmosphere of the re?ow oven. the package body peak temperature must be kept as low as possible. [6] these packages are not suitable for wave soldering. on versions with the heatsink on the bottom side, the solder cannot pene trate between the printed-circuit board and the heatsink. on versions with the heatsink on the top side, the solder might be deposite d on the heatsink surface. [7] if wave soldering is considered, then the package must be placed at a 45 angle to the solder wave direction. the package footprint must incorporate solder thieves downstream and at the side corners. [8] wave soldering is suitable for lqfp, qfp and tqfp packages with a pitch (e) larger than 0.8 mm; it is de?nitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm. [9] wave soldering is suitable for ssop, tssop, vso and vssop packages with a pitch (e) equal to or larger than 0.65 mm; it is de?nitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm. [10] image sensor packages in principle should not be soldered. they are mounted in sockets or delivered pre-mounted on ?ex foil . however, the image sensor package can be mounted by the client on a ?ex foil by using a hot bar soldering process. the appropri ate soldering pro?le can be provided on request. table 6: suitability of ic packages for wave, re?ow and dipping soldering methods mounting package [1] soldering method wave re?ow [2] dipping through-hole mount cpga, hcpga suitable -- dbs, dip, hdip, rdbs, sdip, sil suitable [3] - suitable through-hole-surface mount pmfp [4] not suitable not suitable - surface mount bga, htsson..t [5] , lbga, lfbga, sqfp, ssop..t [5] , tfbga, vfbga, xson not suitable suitable - dhvqfn, hbcc, hbga, hlqfp, hso, hsop, hsqfp, hsson, htqfp, htssop, hvqfn, hvson, sms not suitable [6] suitable - plcc [7] , so, soj suitable suitable - lqfp, qfp, tqfp not recommended [7] [8] suitable - ssop, tssop, vso, vssop not recommended [9] suitable - cwqccn..l [10] , wqccn..l [10] not suitable not suitable - 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 25 of 27 philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 15. revision history table 7: revision history document id release date data sheet status change notice doc. number supersedes tea1532_2 20050204 product data sheet - 9397 750 14319 tea1532_1 modi?cations: ? products tea1532at and tea1532ap added: C updated section 4 order ing inf or mation C updated section 6 pinning inf or mation C changed product numbers in figure 1 , figure 4 , figure 7 , figure 10 , and figure 13 ? added note to figure 1 ? modi?ed figure 6 . tea1532_1 20040528 preliminary data sheet - 9397 750 13113 - philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 9397 750 14319 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 02 4 february 2005 26 of 27 16. data sheet status [1] please consult the most recently issued data sheet before initiating or completing a design. [2] the product status of the device(s) described in this data sheet may have changed since this data sheet was published. the l atest information is available on the internet at url http://www.semiconductors.philips.com. [3] for data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. 17. de?nitions short-form speci?cation the data in a short-form speci?cation is extracted from a full data sheet with the same type number and title. for detailed information see the relevant data sheet or data handbook. limiting values de?nition limiting values given are in accordance with the absolute maximum rating system (iec 60134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the speci?cation is not implied. exposure to limiting values for extended periods may affect device reliability. application information applications that are described herein for any of these products are for illustrative purposes only. philips semiconductors make no representation or warranty that such applications will be suitable for the speci?ed use without further testing or modi?cation. 18. disclaimers life support these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips semiconductors for any damages resulting from such application. right to make changes philips semiconductors reserves the right to make changes in the products - including circuits, standard cells, and/or software - described or contained herein in order to improve design and/or performance. when the product is in full production (status production), relevant changes will be communicated via a customer product/process change noti?cation (cpcn). philips semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise speci?ed. 19. trademarks greenchip is a trademark of koninklijke philips electronics n.v. 20. contact information for additional information, please visit: http://www.semiconductors.philips.com for sales of?ce addresses, send an email to: sales.addresses@www.semiconductors.philips.com level data sheet status [1] product status [2] [3] de?nition i objective data development this data sheet contains data from the objective speci?cation for product development. philips semiconductors reserves the right to change the speci?cation in any manner without notice. ii preliminary data quali?cation this data sheet contains data from the preliminary speci?cation. supplementary data will be published at a later date. philips semiconductors reserves the right to change the speci?cation without notice, in order to improve the design and supply the best possible product. iii product data production this data sheet contains data from the product speci?cation. philips semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. relevant changes will be communicated via a customer product/process change noti?cation (cpcn). ? koninklijke philips electronics n.v. 2005 all rights are reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. date of release: 4 february 2005 document number: 9397 750 14319 published in the netherlands philips semiconductors tea1532(a)p; tea1532(a)t greenchip ? ii smps control ic 21. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.1 distinctive features . . . . . . . . . . . . . . . . . . . . . . 1 2.2 green features . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.3 protection 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 . . . . . . . . . . . . . . . . . . . 4 7.1 start-up, mains enabling operation level and undervoltage lock out . . . . . . . . . . . . . . . . . . . . 6 7.2 supply management. . . . . . . . . . . . . . . . . . . . . 6 7.3 current control mode . . . . . . . . . . . . . . . . . . . . 6 7.4 oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.5 cycle skipping. . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.6 demagnetization (qr operation) . . . . . . . . . . . 7 7.7 continuous conduction mode (ccm). . . . . . . . 7 7.8 overcurrent protection (ocp) . . . . . . . . . . . . . 7 7.9 control pin protection . . . . . . . . . . . . . . . . . . . . 7 7.10 adjustable slope compensation . . . . . . . . . . . . 7 7.11 minimum and maximum on-time. . . . . . . . . . . . 8 7.12 protect and timing input . . . . . . . . . . . . . . . 8 7.13 valley switching. . . . . . . . . . . . . . . . . . . . . . . . . 9 7.14 brown-out protection. . . . . . . . . . . . . . . . . . . . 10 7.15 overtemperature protection (otp) . . . . . . . . 11 7.16 soft start-up (pin sense). . . . . . . . . . . . . . . . 11 7.17 driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 12 9 thermal characteristics. . . . . . . . . . . . . . . . . . 13 10 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 13 11 application information. . . . . . . . . . . . . . . . . . 15 12 test information . . . . . . . . . . . . . . . . . . . . . . . . 19 12.1 quality information . . . . . . . . . . . . . . . . . . . . . 19 13 package outline . . . . . . . . . . . . . . . . . . . . . . . . 20 14 soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 14.1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 22 14.2 through-hole mount packages . . . . . . . . . . . . 22 14.2.1 soldering by dipping or by solder wave . . . . . 22 14.2.2 manual soldering . . . . . . . . . . . . . . . . . . . . . . 22 14.3 surface mount packages . . . . . . . . . . . . . . . . 22 14.3.1 re?ow soldering . . . . . . . . . . . . . . . . . . . . . . . 22 14.3.2 wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 23 14.3.3 manual soldering . . . . . . . . . . . . . . . . . . . . . . 23 14.4 package related soldering information . . . . . . 24 15 revision history . . . . . . . . . . . . . . . . . . . . . . . 25 16 data sheet status. . . . . . . . . . . . . . . . . . . . . . . 26 17 de?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 18 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 19 trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 20 contact information . . . . . . . . . . . . . . . . . . . . 26 |
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