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www.irf.com ? 2008 international rectifier 1 january 16, 2009 datasheet no. - pd97375 IRS21956s floating input, high and low(dual mode) side driver features ? low side programmable ramp gate drive ? low side generic gate drive integrated using the same low side output pin ? high side generic gate driver ? under voltage lockout for vdd, vcc & vbs ? floating 5v input logic compatible ? tolerant to negative transient voltage on vs ? shoot through prevention ? rohs compliant product summary topology pdp v offset 600 v lo sr + 4.5v/us i o+ & i o- (typical) 0.5a & 0.5a t on & t off (typical) 300ns & 280ns package options 20-lead soic
IRS21956s www.irf.com ? 2008 international rectifier 2 table of contents page description 3 simplified block diagram 4 typical application diagram 5 qualification information 7 absolute maximum ratings 8 recommended operating conditions 8 static electrical characteristics 9 dv / linear (stepwise) mode 10 dynamic electrical characteristics 10 timing diagram and logic truth table 11 input/output pin equivalent circuit diagram 16 lead definitions 17 lead assignments 18 package details 19 tape and reel details 20 part marking information 21 ordering information 22
IRS21956s www.irf.com ? 2008 international rectifier 3 description the IRS21956 is high voltage and programmable ramp slope control gate driver for mosfet and igbt with single low side dual mode driver, high side driver and fl oating 5v input. proprietary hvic and latch immune cmos technologies enable ruggedized monolithic constructi on. the floating logic input is compatible with standard 5v cmos or lsttl output. t he output driver features a progra mmable slope control by external r/c and input signals. the floating channels can be used to drive an n-channel power mosfet or igbt in the high side configuration, which operat es up to 600 volts above the com ground.
IRS21956s www.irf.com ? 2008 international rectifier 4 simplified block diagram level shift up r r q s uvlo pulse filter shoot through prevention and logic circuit vdd hin3 lin2 lin1 ho3 vb vs vss level shift down uvlo dv lo vcc com vref reference generating conditioning and op- amp driving - + vse 10 v regulator res pulse filter uvlo r r q s logic and pulse generator
IRS21956s www.irf.com ? 2008 international rectifier 5 typical connection diagram a) linear ramp driver?s connection diagram b) stepwise linear ramp driver?s connection diagram v set nc vdd lin1 lin2 hin3 nc vb ho3 vs nc nc vcc lo IRS21956 sow20 nc vref dv vse res com vss panel optional cc c ref r res 5 v dd 25 v max
IRS21956s www.irf.com ? 2008 international rectifier 6 c) exponential ramp driver?s connection diagram
IRS21956s www.irf.com ? 2008 international rectifier 7 qualification information ? industrial ?? qualification level comments: this family of ics has passed jedec?s industrial qualification. ir ?s consumer qualification level is granted by extensi on of the higher industrial level. moisture sensitivity level soic20w msl3 ??? 260c (per ipc/jedec j-std-020) machine model class b (per jedec standard jesd22-a115) esd human body model class 2 (per eia/jedec standard eia/jesd22-a114) ic latch-up test class i, level a (per jesd78) rohs compliant yes ? qualification standards can be found at international rectifier?s web site http://www.irf.com/ ?? higher qualification ratings may be available should the user have such requirements. please contact your international rectifier sales r epresentative for further information. ??? higher msl ratings may be available for the specif ic package types listed her e. please contact your international rectifier sales repr esentative for further information.
IRS21956s www.irf.com ? 2008 international rectifier 8 absolute maximum ratings absolute maximum ratings indicate sustained limit s beyond which damage to the device may occur. all voltage parameters are absolute voltages referenced to com . symbol definition min max units v dd floating input supply voltage -0.3 625 v v ss floating input supply return voltage v dd -25 v dd +0.3 v v in logic input voltage (lin1,lin2,hin3) v ss -0.3 v dd +0.3 v v cc low side supply voltage -0.3 25 v v dv , v vref low side inputs voltage com-0.3 v cc +0.3 v v vse , v res low side inputs voltage com-0.3 v cc +0.3 v v lo low side gate drive output voltage com-0.3 v cc +0.3 v v b high side floating well supply voltage -0.3 625 v v s high side floating well supply return voltage v b -25 v b +0.3 v v ho floating gate drive output voltage v s -0.3 v b +0.3 v dv ss /dt allowable v ss offset supply transient re lative to com - 50 v/ns dv s /dt allowable v s offset supply transient re lative to com - 50 v/ns p d package power dissipation @ t a <=+25oc - 1.0 w r ja thermal resistance, junction to ambient - 120 oc/w t j junction temperature -55 150 oc t s storage temperature -55 150 oc t l lead temperature (soldering, 10 seconds) - 300 oc recommended operating conditions for proper operation, the device should be used within the recommended conditions. all voltage parameters are absolute voltages referenced to com . the offset rating are tested with supplies of (v cc -com) = (v b -v s )=15v. symbol definition min max units v dd floating input supply voltage v ss +4.5 v ss +6 v v ss floating input supply offset voltage -0.3 600 v v in lin1, lin2, hin3 input voltage v ss v dd v v cc low side supply voltage 10 20 v v lo low side gate drive output voltage com v cc v v res res input voltage com v cc v v dv dv input voltage com v cc v v vref, vse vref and vse input voltage com v cc -3 v v b high side floating well supply voltage v s +10 v s +20 v v s high side floating well supply offset voltage note2 ?? 600 v v ho floating gate drive output voltage v s v b v t a ambient temperature -40 125 oc ? v s and v b voltages will be tolerant to short negative transient spikes. these will be defined and specified in the future. ?? logic operation for vs of -5 to 600v. logic state held for vs of -5v to ?v bs . (please refer to design tip dt97-3 for more details).
IRS21956s www.irf.com ? 2008 international rectifier 9 static electrical characteristics (v cc -com) = (v b -v s )=15v. t a = 25oc. the v in , v in th and i in parameters are referenced to v ss . the v o and i o parameters are referenced to respective vs, com and are applicable to the respective output leads ho3, lo. the v ccuv parameters are referenced to com. the v bsuv parameters are referenced to v s . the v dduv parameters are referenced to v ss . symbol definition min typ max units test conditions v dduv + v dd supply undervoltage positive going threshold 4.0 v dduv - v dd supply undervoltage negative going threshold 3.9 v ccuv + v cc supply undervoltage positive going threshold 7.8 8.7 9.6 v ccuv - v cc supply undervoltage negative going threshold 7.2 8.0 8.8 v bsuv+ v bs supply undervoltage positive going threshold 7.8 8.7 9.6 v bsuv- v bs supply undervoltage negative going threshold 7.2 8.0 8.8 v i lk1 high side floating well offset supply leakage current --- --- 50 v b = v s = 600v i lk2 high side floating well offset supply leakage current --- --- 50 ua v dd = v ss = 300v i qdd quiescent vdd supply current --- 145 250 ua in1, 2, 3 = 0vor 5v i qbs quiescent vbs supply current --- 65 120 ua hin3 = 5v or 0v --- 1 1.5 ma lin1, 2 = 0v, res=130kohm i qcc quiescent vcc supply current --- 5 7 ma lin1, 2 = 5v, res=130kohm v ih logic ?1? input voltage 3.5 --- --- v il logic ?0? input voltage --- --- 0.8 v i in + logic ?1? input bias current --- 5 --- v in = 5v i in - logic ?0? input bias current --- 0 --- ua v in = 0v io+_ ho3, lo output high short circuit pulsed current --- 0.5 --- v o =15v,v in =5v, pw<=10us io-_ ho3, lo output low short circuit pulsed current --- 0.5 --- a v o =0v,v in =0v, pw<=10us v ol _ ho3, lo low level output voltage --- 35 150 io=2ma v oh _ ho3, lo high level output voltage, vbias-vo --- 15 80 mv io=2ma dv exp+ positive dv input threshold for exponential ramp --- 10 --- v c ref =1nf, v se open r res =130k
IRS21956s www.irf.com ? 2008 international rectifier 10 dv / linear (stepwise) mode symbol definition min typ max units test conditions 0.4 0.5 0.6 dv=500mv, c ref =1nf, v se open r res =130k, vref, hold dv reference voltage 2.82 3 3.18 v dv=3v, c ref =1nf, v se open r res =130k, dynamic electrical characteristics (v cc -com)= (v b -v s )=15v. t a = 25oc. c l = 1000pf unless otherwise specif ied. all parameters are reference to com. symbol definition min typ max units test conditions internal operational amplifier characteristics t ref_ln_ramp linear ramp reference 10% to 90% 130 190 250 s c ref =1nf, v se open r res =130k, v dv =com gm ota transconductance --- 12 --- ms cl_lo=1nf, v dv =v cc, r res =130k, dc bias 5v g open loop open loop gain 45 60 --- db cc =1nf, v dv =v cc, r res =130k bw ss small signal bandwidth --- 3.5 --- mhz cc =1nf v dv =v cc, r res =130k v os input offset voltage --- 20 --- mv v dv =v cc, r res =130k lo sr+ output positive slew rate --- 4.5 --- v/s cl_lo=1nf, v dv =v cc, r res =130k cmrr common mode rejection ratio 55 65 --- db v dv =v cc, r res =130k psrr power su pp l y re j ection ratio 55 65 --- db v dv =v cc , r res =130k propagation delay characteristics t on turn-on delay (ho3, lo) --- 300 400 t off turn-off delay (ho3, lo) --- 280 380 t r turn-on rise from 10% to 90% --- 25 60 t f turn-off fall from 90% to 10% --- 15 40 mt delay matching, ho3 & lo turn- on/off 50 ns gate drive mode c l =1nf
IRS21956s www.irf.com ? 2008 international rectifier 11 figure 1a1 input/output timing diagram: linear ramp figure 1a2 input/output timing diagram: linear ramp with voltage difference
IRS21956s www.irf.com ? 2008 international rectifier 12 figure 1b input/output timing diagram: stepwise linear ramp figure 1c input/output timing diagram: exponential ramp
IRS21956s www.irf.com ? 2008 international rectifier 13 lin1 lin2 lo vref vse dv=com hin3 ho3 figure 1d input/output timi ng diagram : lo/ho3 outputs logic truth table lin1 lin2 hin3 ho3 ota of lo gate driver of lo 0 0 0 0 high impedance (hiz) 0 0 0 1 1 high impedance (hiz) 0 0 1 0 0 high impedance (hiz) 1 0 1 1 0 high impedance (hiz) 0 1 1 0 0 linear/exp ramp depend on dv pin high impedance (hiz) 1 1 1 0 high impedance (hiz) 0 1 step(0/1) 0 0 stepwise linear if dv pin is com high impedance (hiz) 1 step(0/1) 1 0 high impedance (hiz) 0
IRS21956s www.irf.com ? 2008 international rectifier 14 figure 2 timing definitions of v ref figure 3 switching time waveform definitions of lo and ho3
IRS21956s www.irf.com ? 2008 international rectifier 15 figure 4 delay matching waveform definitions
IRS21956s www.irf.com ? 2008 international rectifier 16 input/output pin equivalent circuit diagram vcc com vse, res, vref, dv vb vs ho3 esd diode esd diode 25v 25v 600v esd diode esd diode r esd esd diode esd diode vcc com lo vdd vss lin1, lin2, hin3 25v esd diode esd diode r esd 600v
IRS21956s www.irf.com ? 2008 international rectifier 17 lead definitions pin# symbol description 1 nc no connection 2 vdd floating input supply voltage 3 lin1 logic input for lo ramp control 4 lin2 logic input for low side gate driver outputs, in phase 5 hin3 logic input for high side gate driver output 6 vss floating input supply return 7 nc no connection 8 nc no connection 9 vref external programmable r/c input for ramp generation 10 dv ramp selection and programmable difference voltage (dv) input 11 com low side supply return 12 res adjustable current source resistor input 13 vse voltage sense input 14 lo low side gate driver output 15 vcc low side supply voltage 16 nc no connection 17 nc no connection 18 vs high side gate drive floating supply return 19 ho3 high side gate driver output 20 vb high side gate drive floating supply
IRS21956s www.irf.com ? 2008 international rectifier 18 lead assignments 8 13 vb 9 12 ho3 10 11 vs 1 2 3 4 5 6 7 20 19 18 17 16 15 14 vdd hin3 vcc lo res dv vref IRS21956 sow20 vse com lin1 lin2 vss nc nc nc nc nc package 20 pin sow
IRS21956s www.irf.com ? 2008 international rectifier 19 package information
IRS21956s www.irf.com ? 2008 international rectifier 20 package details: e f a c d g a b h n ote : controlling dimension in mm loaded tape feed direction carrier tape dimension for 20soicw code min max min max a 11.90 12.10 0.468 0.476 b 3.90 4.10 0.153 0.161 c 23.70 24.30 0.933 0.956 d 11.40 11.60 0.448 0.456 e 10.80 11.00 0.425 0.433 f 13.20 13.40 0.520 0.528 g 1.50 n/a 0.059 n/a h 1.50 1.60 0.059 0.062 metric imperial a h f e g d b c reel dimensions for 20soicw code min max min max a 329.60 330.25 12.976 13.001 b 20.95 21.45 0.824 0.844 c 12.80 13.20 0.503 0.519 d 1.95 2.45 0.767 0.096 e 98.00 102.00 3.858 4.015 f n/a 30.40 n/a 1.196 g 26.50 29.10 1.04 1.145 h 24.40 26.40 0.96 1.039 metric imperial
IRS21956s www.irf.com ? 2008 international rectifier 21 part marking information
IRS21956s www.irf.com ? 2008 international rectifier 22 ordering information standard pack base part number package type form quantity complete part number tube/bulk 38 IRS21956spbf IRS21956 soic20w tape and reel 1000 IRS21956strpbf the information provided in this document is believed to be accu rate and reliable. however, international rectifier assumes no responsibility for the consequences of the use of this information. international rectifier assumes no responsibility for any infringement of patents or of other rights of third parties which may result fr om the use of this information. no license is granted by imp lication or otherwise under any patent or patent rights of international rectif ier. the specifications ment ioned in this document are subj ect to change without notice. this document supersedes and replaces all inform ation previously supplied. for technical support, please contact ir?s technical assistance center http://www.irf.com/technical-info/ world headquarters: 233 kansas st., el segundo, california 90245 tel: (310) 252-7105

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