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FAN7093_f085 high current pn half bridge december 2011 fan70 93_f085 high current pn half bridge rectifier 47 a, max path resistance 30.5 m at 150 c ? 2011 fairchild semiconductor corporation FAN7093_f085 rev. c1 www.fairchildsemi.com 1
FAN7093_f085 high current pn half bridge december 2011 1 features ? path resistance of max. 30.5 m at 150 c ? low quiescent current of max. 270 a ? pwm capability of up to 60 khz combined with active freewheeling ? switched mode current limitation for reduced power dissipation in over current ? current limitation level of typical 46 a ? status flag diagnosis with low and high side curren t sense capability ? over temperature shut down with latch behavior ? shorted load protection with latch behavior ? over voltage lock out ? under voltage shut down ? driver circuit with logic level inputs ? typical slew rate of 1 v/s with open sr pin ? adjustable slew rates for optimized emi 2 brief functional description the FAN7093_f085 is an integrated high current half bridge for electric motor drive applications. it contains one p-channel high- side mosfet and one n-channel low-side mosfet with an integrated control ic in one package. with the p-ch annel high- side switch the need for a charge pump is eliminate d and therefore minimizing emi. pins in and are logic level inputs and control the half bridge outputs. the diagnosti c current output pin is outputs a proportional current through the h alf bridge mosfets. the is pin output represents current for e ither the p- chan or the n-chan depending on which is active. th e part is protected against short to battery or ground, over current, over- temperature, over voltage and under voltage. the FAN7093_f085 provides a cost optimized solution for protected high current pwm motor drives with very low board s pace consumption. to263-7l FAN7093_f085 rev. c1 www.fairchildsemi.com 2
FAN7093_f085 high current pn half bridge december 2011 3 block diagram the FAN7093_f085 is a high current half-bridge and contains three separate chips in one package: one p-channel high-side mosfet and one n-channel lo w-side mosfet together with a control ic. all three chips are mounted on one common lead fram e, using chip on chip and chip by chip technology. the power fets are vertical mos transis tors to ensure minimum on state resistance. using a p-channel high-side switch eliminates a cha rge pump and reduces emi. a microcontroller is able to control the logic level inputs in and of the half-bridge. the diagnostic pin is is a curr ent output stage which delivers a proportional current through the p-channel and n-channel mosfets depending on which is being activated with in/ pin forcing conditions. in case of a short to vbatt or ground the is pin acts as an error flag, w hich can be detected as a logic high level through an attached microcontroller. in an over current sit uation the control ic turns off the mosfets and retries to turn them back on after a cool down time of typical 140us. the control ic protects the mosfets also against over voltage, under voltage an d over temperature. the dead time to prevent shoot through between p- and n- channel mosfet is g enerated by the control ic too. the slew rate of the outputs can be adjusted through an external res istor connected to the sr pin. the FAN7093_f085 can be combined with other FAN7093_f085 to form ful l-bridge and also 3-phase drive configurations. figure 1 FAN7093_f085 block diagram FAN7093_f085 rev. c1 www.fairchildsemi.com 3
FAN7093_f085 high current pn half bridge december 2011 4 pin configuration 4.1 pin assignment figure 2 pin assignment for FAN7093_f085b, FAN7093_ f085p and FAN7093_f085s 4.2 pin definitions and functions pin symbol i/o function 1 gnd - ground 2 in i input defines whether high- or lowside switch is activated 3 i inhibit when set to low device goes in sleep mode and resets o ver temperature and hs and ls short latch 4,8 out o power output of the bridge 5 sr i slew rate the slew rate of the power switches can be adjuste d by connecting a resistor between sr and gnd 6 is o current sense and diagnostics 7 v batt - supply bold type pins need power wiring note: see truth table in section 7.3.5 on page 14 f or details b p s FAN7093_f085 rev. c1 www.fairchildsemi.com 4
FAN7093_f085 high current pn half bridge december 2011 5 general product characteristics 5.1 absolute maximum ratings absolute maximum ratings 1) t j = -40 c to +150 c; all voltages with respect to ground, positive c urrent flowing into pin (unless otherwise specified) pos. parameter symbol min. typ. max. unit conditions 5.1.1 supply voltage v batt -0.3 45 v C 5.1.2 logic input voltage v in (h) -0.3 45 v C 5.1.3 voltage at sr pin v sr -0.3 1.5 v C 5.1.4 voltage at is pin v is -0.3 7.5 v C 5.1.5 hs/ls continuous drain current 2) i d(hs) i d(ls) -46/46 a t c < 85c 5.1.6 hs/ls pulsed drain current 2) i d(hs) i d(ls) -90/90 a t c < 85c single pulse < 5us 5.1.7 hs/ls pwm current 2) i d(hs) i d(ls) -55/55 a t c < 125c f = 1khz, dc = 50% temperatures 5.1.8 junction temperature t j -40 150 c C 5.1.9 storage temperature t stg -55 150 c C esd susceptibility 5. 1.1 0 in, , sr, is v esd - 2 2 kv hbm 3) 5.1.11 out, gnd, v batt v esd -6 6 kv hbm 3) 1) not subject to production test, specified by design 2) maximum reachable current may be smaller depending on current limitation level 3) esd susceptibility, hbm according to aec_q100-004c /j esd22-a114-b (1.5 k , 100 pf) note: stresses above the ones listed here may cause permanent damage to the device. exposure to absolu te maximum rating conditions for extended periods may affect d evice reliability. note: integrated protection functions are designed to prevent ic destruction under fault conditions de scribed in the data sheet. fault conditions are considered as outside normal operating range. protection functions are n ot designed for continuous repetitive operation FAN7093_f085 rev. c1 www.fairchildsemi.com 5
FAN7093_f085 high current pn half bridge december 2011 5.2 functional range pos. parameter symbol limit values unit conditions min. max. 5.2.1 supply voltage range for nominal operation v batt (no m) 7 18 v C 5.2.2 supply voltage range for extended operation v vbatt( ext) 5.5 28 v parameter deviations possible 5.2.3 junction temperature t j -40 150 c C note: within the functional or operating range, the ic operates as described in the circuit descriptio n. the electrical characteristics are specified within the conditions given in the electrical characteristics table. 5.3 thermal resistance 4 pos. parameter symbol min. typ. max. unit condition s 5.3.1 thermal resistance junction-case, low side switch r thjc(ls) = ? t j(ls)/ p v(ls) r thjc(ls) 0.8 c/w 5.3.3 thermal resistance junction-case, high side switch r thjc(hs) = ? t j(hs)/ p v(hs) r thjc(hs) 0.45 c/w 5.3.1 thermal resistance junction ambient r thja 40 c/w (1sq. inch cooling area) 4) not subject to production test, specified by design 6 block description and characteristics 6.1 supply characteristics vbatt = 7 v to 18 v, t j = -40 c to +150 ? c, ? i l = 0 a, all voltages with respect to ground, positiv e current flowing into pin (unless otherwise specified) pos. parameter symbol min. typ. max. unit conditions 6.1.1 supply current i vbatt(o n) C -- 5.0 ma v inh = 5 v, v in = 5v, r sr = 0 , dc-mode, no fault condition 6.1.2 quiescent current i vbatt(o ff) C -- 450 a v inh = 0 v, v in = 0v, 7 power stages the power stages of the FAN7093_f085 consist of a p -channel vertical dmos transistor for the high side switch and a n-channel vertical dmos transisto r for the low side switch. all protection and diagnostic functions are located in the control die . both switches can be operated up to 60 khz, allowing active freewheeling and thus minimizing po wer dissipation in the forward operation of the FAN7093_f085 rev. c1 www.fairchildsemi.com 6
FAN7093_f085 high current pn half bridge december 2011 integrated diodes. the on state resistance r ds(on) is dependent on the supply voltage vbatt as well as on the junction temperature t j . 7.1 power stages - static characteristics vbatt = 7 v to 18 v, t j = -40 c to +150 c, all voltages with respect to ground, positive c urrent flowing into pin (unless otherwise specified) high side switch - static characteristics pos. parameter symbol min. typ. max. unit condition s 7.1.1 on state high side resistance 5) i out = -20 a; vbatt = 14 v r ds(on) hs 12.3 m FAN7093_f085b (to-263-7l, d 2 pak) 7.1.2 leakage current i leak(hs) 50.0 a v inh = 0 v; v out = 0 v 7.1 .3 reverse diode forward - voltage 6) 1.5 v i out = - 9 a low side switch - static characteristics pos. parameter symbol min. typ. max. unit condition s 7.1.4 on state low side resistance 5 ) i out = 20 a; vbatt = 14 v r ds(on) ls 18.2 m FAN7093_f085b 7.1.5 leakage current i leak(ls) 10.0 a v inh = 0 v; v out = vbatt 7.1 . 6 reverse diode forward - voltage 6 ) - 1.5 v i out = 9 a 5) specified r ds(on) value is related to normal soldering points; rds(on) values is specified for FAN7093_f085b : pin 1,7 to pin 8 (tab, backside) and for FAN7093_f085p/FAN7093_f085s : pin 1,7 to pin4 6) due to active freewheeling, diode is conducting onl y for a few s, depending on r sr FAN7093_f085 rev. c1 www.fairchildsemi.com 7
FAN7093_f085 high current pn half bridge december 2011 7.1.1 switching times figure 3 timing diagram due to the timing differences for the rising and th e falling edge there will be a slight difference between the length of the input pulse and the lengt h of the output pulse. 7.1.2 power stages - dynamic characteristics vbatt = 7v - 14 v, t j = -40 c to +150 c, r load = 2 ?? all voltages with respect to ground, positive curre nt flowing into pin (unless otherwise specified) high side switch dynamic characteristics pos. parameter symbol min. typ. max. unit condition s 7.1.7 slew rate (note 1) v slew(on) 1 5 12 5 0.8 19 15 6 1 2 4 17 7 1.2 v/s rsr = 0 rsr = 5.1 k rsr = 51 k rsr = open rload to gnd 7.1.8 turn o n delay time t d(on) 0 . 4 5 2.1 4. 2 s low side switch dynamic characteristics pos. parameter symbol min. typ. max. unit condition s 7.1.9 slew rate (note 1) v slew(off) 18 13 5 0.8 21 17 6 1 24 19 7 1.2 v/s rsr = 0 rsr = 5.1 k rsr = 51 k rsr = open rload to vbatt 7.1.10 turn on delay time t d ( on ) 0.45 2.1 4.2 s FAN7093_f085 rev. c1 www.fairchildsemi.com 8
FAN7093_f085 high current pn half bridge december 2011 note 1: not subject to production test 7.2 protection functions the device provides integrated protection functions . these are designed to prevent ic destruction under fault conditions described in the data sheet. fault conditions are considered as outside norma l operating range. protection functions are not to be used for continuous or repetitive operation, with the exception of the current limitation. in a fault con dition the FAN7093_f085 will apply the highest slew rate possible independent of the connected slew rat e resistor. over voltage, over temperature and over current are indicated by a fault current flag i is(lim) at the is pin. the following describes the protecti on functions are listed in order of their priority. ov er voltage lock out overrides all other error modes . 7.2.1 over voltage lock out to assure a high immunity against over voltage cond itions like load dump, the device turns off the low-side mosfet and turns on the high-side mosfet w hen the supply voltage exceeds the over voltage protection level v ov(off) . the control ic returns to normal operation 120us after the supply voltage decreases below the over voltage lock out l evel v ov(on) . in h-bridge configuration, this behavior of the FAN7093_f085 will lead to freewheel ing in high-side during over voltage. if the load current exceeds 90a in over voltage lock out, the i c turns off the high side driver and latches this s tate. 7.2.2 under voltage shut down to avoid uncontrolled motion of for example a drive n motor at low voltages, the control ic will turn off all mosfets, when the supply voltage drops belo w the turn-off voltage v uv(off) . the control ic returns to normal operation when the supply voltage rises above the turn-on voltage v uv(on) . 7.2.3 over temperature protection the FAN7093_f085 is protected against over temperat ure by an integrated temperature sensor in the control ic. over temperature is turning off both ou tput stages. this state is latched until the device is reset by a low signal with a minimum pulse length o f t reset at the pin, assuming the control ic temperature decreased by at least the thermal hyste resis repetitive use of the over temperature protection impacts lifetime. 7.2.4 current limitation the current is measured in both mosfets of the fan7 093_f085. as soon as the current is reaching the limit i cl , the low- or high-side mosfet is deactivated and t he other mosfet activated for t cls . during that time changes at the in pin are ignored. however, the pin can still be used to turn off both mosfets. after time t cls the mosfets return to their initial setting. the e rror signal at the is pin is reset after 2 * t cls . unintentional triggering of the current limit cir cuitry through short current spikes (e.g. inflicted by emi coming from the motor ) is suppressed by an internal filter. reaction del ay time of the filter circuitry is affecting the curre nt limit level i cl depending on slew rate of the load FAN7093_f085 rev. c1 www.fairchildsemi.com 9
FAN7093_f085 high current pn half bridge december 2011 current di/dt . figure 4 timing diagram current limitation (inducti ve load) in combination with a typical inductive load, such as a motor, this results in a switched mode current limitation. this method of limiting the current has the advantage of greatly reduced power dissipation in the FAN7093_f085 compared to driving the mosfet in linear mode. therefore it is possible to use the current limitation for a short time without exceeding the maximum allowed junction temperature (e.g. for limiting the inrush current d uring motor start up). however, the regular use of the current limitation is allowed as long as the specif ied maximum junction temperature is not exceeded. exceeding this temperature can reduce the lifetime of the device. 7.2.5 short circuit protection the device is short circuit protected against ? output shorted to ground ? output shorted to battery voltage ? short circuit of load the short circuit protection is a combination of cu rrent limit and over-temperature shut down of the device 7.2.6 electrical characteristics - protection functions vbatt = 7 v to 18 v, t j = -40 c to +150 c, all voltages with respect to ground, positive c urrent flowing into pin (unless otherwise specified) FAN7093_f085 rev. c1 www.fairchildsemi.com 10
FAN7093_f085 high current pn half bridge december 2011 pos. parameter symbol limit values unit conditions min. typ. max. under voltage shut down 7.2.1 turn - off voltage v uv(on) C C 5.6 v v s increasing 7.2.2 turn - on voltage v uv(off) 4.9 C -- v v s decreasing 7.2.3 hysteresis v uv(hy) C 0.15 C v C over voltage lock out 7.2.4 turn - off voltage v ov(on) 28 C C v v s decreasing 7.2.5 turn - on voltage v ov(off) 27 C 35 v v s increasing 7.2.6 hysteresis v ov(hy) C 1.0 C v C 7.2.7 lock out time t lock 140 s current limitation 7.2.8 current limit detection level i cl 39 50 61 a high- and low- side 7.2.9 peak current limit detection level high- and low- side (note 2) i c p 72 88 105 a note 2. not subject to production test, specified b y design current limitation timing 7.2.10 shut off time for hs and ls t cls 100 150 200 s thermal shut down 6 7.2.11 turn off tj t jsd 170 -- 190 c C 7.2.12 turn on tj t jso 150 C 170 c C 7.2.13 thermal hysteresis t sd(hy) C 15 C k C 7.2.14 reset pulse at pin ( low) t reset 4 C C s C 7) not subject to production test, specified by desig n 7.3 control and diagnostics 7.3.1 input circuit the gate drivers for the mosfets are controlled thr ough inputs in and and are ttl/cmos compatible schmitt triggers with hysteresis. settin g the pin to high enables the device. in this condition one of the two power mosfets is turned on depending on the input level of the in pin. to FAN7093_f085 rev. c1 www.fairchildsemi.com 11
FAN7093_f085 high current pn half bridge december 2011 deactivate both switches, the pin has to be set to low. no external driver is ne eded. the FAN7093_f085 can interface directly with a microcon troller, as long as the maximum ratings are not exceeded. 7.3.2 dead time generation the dead time is generated on the control ic to pre vent shoot through between the power mosfets. the dead time is almost independent of the selected slew rate in order to reach a high pwm frequency of 60khz 7.3.3 adjustable slew rate in order to optimize electromagnetic emission, the switching speed of the mosfets is adjustable by an external resistor. the slew rate pin sr allows t he user to optimize the balance between emission and power dissipation within the application by con necting an external resistor r sr to gnd. if the sr pin is open by design or if the intermittent discon nect happens, the slew rate is set to the value sho wn in table on page 8 rows 7.1.1, 7.1.9. 7.3.4 status flag diagnostic with current sense capability the status pin is is used as a combined current sen se and error flag output. in normal operation (current sense mode), a current source, in the cont rol ic is connected to the status pin, which delive rs a current proportional to the forward load current fl owing through the active high-side or low-side mosfet. current flow in the reverse direction canno t be detected except for a marginal leakage current i is(lk) . the external resistor r is determines the voltage per output current. the cur rent sense ratio is 1/8500 (see table on page 15 for details). in case of a fault condition the status output is connected to a current source which is independent of the load current and provides i is(lim) . the maximum voltage at the is pin is determined by the choice of the external resistor and the supply voltage. in case of current limitation the i is(lim) is activated for 2 * t cls . FAN7093_f085 rev. c1 www.fairchildsemi.com 12
FAN7093_f085 high current pn half bridge december 2011 figure 5 current sense mode and error flag mode figure 6 sense current versus load current and flag current FAN7093_f085 rev. c1 www.fairchildsemi.com 13
FAN7093_f085 high current pn half bridge december 2011 7.3.5 truth table device state in hs ls is mode normal operation 0 x off off 0 stand-by mode normal operation 1 0 off on cs ls active normal operation 1 1 on off cs hs active over voltage x x on off 1 shut-down of ls, hs activated, error detected under voltage x x off off 0 uv lockout over temperature or shorted ls or hs 0 x off off 0 stand-by mode, reset of latch over temperature or shorted ls or hs 1 x off off 1 shut-down with latch, error detected current limit 1 1 off on 1 switched mode, error det ected 8 ) current limit 1 0 on off 1 switched mode, error det ected 8 ) 8) device will return to normal operation after tim e tcls. the error signal will be reset after 2*tcls. inputs power fets status flag is 0 = logic low off = turned off cs = current sense mode 1 = logic high on = turned on 1 = logic high (error ) x = dont care FAN7093_f085 rev. c1 www.fairchildsemi.com 14
FAN7093_f085 high current pn half bridge december 2011 7.3.6 electrical characteristics - control and diagnostics vbatt = 7 v to 18 v, t j = -40 c to +150 ? c, all voltages with respect to ground, positive cu rrent flowing into pin ? (unless otherwise specified) pos parameter symbol min. typ. max. unit conditions control inputs (in and ) 7.3 . 1 low level voltage ,in v inxh 1. 5 v 7 .3 . 2 high level voltage ,in v inxh 3.5 v 7.3 . 3 input voltage hysteresis v inxh (hy) 50 0 mv 7.3 . 4 input current high level i inxh 2 0 8 0 a v inh = v in = 0.4v - 5.3v current sense 7.3 . 5 current sense ratio in static on - condition kilis = il/iis kilis 4 .5 3.5 8 .5 13.5 1 03 r is = 800 i l = 8a C 50a i l = 1.1a C 8a 7.3 . 6 maximum analog sense current i is(lim) 4.5 5.5 ma r is = 800 7.3.7 sense current in fault condition (note 3) i is(fault) 5.5 7 ma r is = 800 note 7.3.8 maximum is output vo ltage v is(fault) 7.5 v r is 3 k 7. 3 . 9 isense leakage current i isl eak 300 a v inh = 5 v, v in = x, i l = 0 a 7.4. 0 settling time t set 4 s in C 90%vis note 3. not subject to production test, specified b y design FAN7093_f085 rev. c1 www.fairchildsemi.com 15
FAN7093_f085 high current pn half bridge december 2011 8 application . application examples typical motor drive application in full bridge conf iguration figure 7 full bridge application FAN7093_f085 rev. c1 www.fairchildsemi.com 16
FAN7093_f085 high current pn half bridge december 2011 typical motor drive application in half bridge conf iguration figure 8 half bridge application FAN7093_f085 rev. c1 www.fairchildsemi.com 17
FAN7093_f085 high current pn half bridge december 2011 9 package drawings FAN7093_f085 rev. c1 www.fairchildsemi.com 18
trademarks the following includes registered and unregistered trademarks and se rvice marks, owned by fairchild semiconductor and/or its gl obal subsidiaries, and is not intended to be an exhaustive list of all such trademarks. *trademarks of system general corporation, used under license by fairchild semiconductor. disclaimer fairchild semiconductor reserves the right to make changes with out further notice to any products herein to improve reliability, function, or design. fairchild does not assume an y liability arising out of th e application or use of any product or circuit described herein; neither does it convey an y license under its patent rights, nor the rights of others. these specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers these products. life support policy fairchild?s products are not authorized for use as critical co mponents in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used here in: 1. life support devices or systems ar e devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a signi ficant injury of the user. 2. a critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life sup port device or system, or to affect its safety or effectiveness. product status definitions definition of terms 2cool? accupower? auto-spm? ax-cap?* bitsic ? build it now? coreplus? corepower? crossvolt ? ctl? current transfer logic? deuxpeed ? dual cool? ecospark ? efficentmax? esbc? fairchild ? fairchild semiconductor ? fact quiet series? fact ? fast ? fastvcore? fetbench? flashwriter ? * fps? f-pfs? frfet ? global power resource sm green fps? green fps? e-series? g max ? gto? intellimax? isoplanar? marking small speakers sound louder and better? megabuck? microcoupler? microfet? micropak? micropak2? millerdrive? motionmax? motion-spm? mwsaver? optohit? optologic ? optoplanar ? powertrench ? powerxs? programmable active droop? qfet ? qs? quiet series? rapidconfigure? saving our world, 1mw/w/kw at a time? signalwise? smartmax? smart start? solutions for your success? spm ? stealth? superfet ? supersot?-3 supersot?-6 supersot?-8 supremos ? syncfet? sync-lock? ?* the power franchise ? ? tinyboost? tinybuck? tinycalc? tinylogic ? tinyopto? tinypower? tinypwm? tinywire? transic ? trifault detect? truecurrent ? * serdes? uhc ? ultra frfet? unifet? vcx? visualmax? voltageplus? xs? tm ? ? tm datasheet identification product status definition advance information formative / in design datasheet contains the design specifications for product de velopment. specifications may change in any manner without notice. preliminary first production datasheet contains preliminary data; supp lementary data will be published at a later date. fairchild semiconductor reserves the ri ght to make changes at any time without notice to improve design. no identification needed full production datasheet contains final specifications. fair child semiconductor reserves the right to make changes at any time without notice to improve the design. obsolete not in production datasheet contains specifications on a product th at is discontinued by fairchild semiconductor. the datasheet is for reference information only. anti-counterfeiting policy fairchild semiconductor corporation?s anti-counterfeiting policy. fairchild?s anti-counterfeiting policy is also stated on our external website, www.fairchildsemi.com, under sales support . counterfeiting of semiconductor parts is a growing problem in th e industry. all manufactures of semiconductor products are expe riencing counterfeiting of their parts. customers who inadvertently purchase c ounterfeit parts experience many problems such as loss of brand reputation, substa ndard performance, failed application, and increased cost of production and manufacturing del ays. fairchild is taking strong measures to protect ourselve s and our customers from the proliferation of counterfeit parts. fairchild strongly encourages customers to purchase fairchild parts either directly from fa irchild or from authorized fairchild distributors who are listed by country on our web page cited above. products customers buy either from fairchild directly or fr om authorized fairchild distributors are genuine parts, have full traceability, meet fa irchild?s quality standards for handing and storage and provide access to fairchild?s full range of up-to-date technical and product information. fairchild and our authorized distributors will stand behind all warranties and wi ll appropriately address and warranty issues that may arise. fairchild will not provide any warranty coverage or other assistance for parts bought from unau thorized sources. fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors. rev. i60 tm ? 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