L6205 n operating supply voltage from 8 to 52v n 5.6a output peak current (2.8a dc) n r ds(on) 0.3 w typ. value @ t j = 25 c n operating frequency up to 100khz n non dissipative overcurrent protection n paralleled operation n cross conduction protection n thermal shutdown n under voltage lockout n integrated fast free wheeling diodes typical applications n bipolar stepper motor n dual or quad dc motor description the L6205 is a dmos dual full bridge designed for motor control applications, realized in multipower- bcd technology, which combines isolated dmos power transistors with cmos and bipolar circuits on the same chip. available in powerdip20 (16+2+2), powerso20 and so20(16+2+2) packages, the L6205 features a non-dissipative protection of the high side powermosfets and thermal shutdown. block diagram d99in1091a gate logic over current detection over current detection gate logic vcp vboot en a in1 a in2 a en b in1 b in2 b v boot 5v 10v vs a v s b out1 a out2 a out1 b out2 b sense a charge pump voltage regulator thermal protection v boot v boot 10v 10v bridge a bridge b sense b ocd a ocd b ordering numbers: L6205n (powerdip20) L6205pd (powerso20) L6205d (so20) powerdip20 (16+2+2) powerso20 so20 (16+2+2) product specification 1 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
absolute maximum ratings recommended operating conditions symbol parameter test conditions value unit v s supply voltage v sa = v sb = v s 60 v v od differential voltage between vs a , out1 a , out2 a , sense a and vs b , out1 b , out2 b , sense b v sa = v sb = v s = 60v; v sensea = v senseb = gnd 60 v v boot bootstrap peak voltage v sa = v sb = v s v s + 10 v v in ,v en input and enable voltage range -0.3 to +7 v v sensea, v senseb voltage range at pins sense a and sense b -1 to +4 v i s(peak) pulsed supply current (for each v s pin), internally limited by the overcurrent protection v sa = v sb = v s ; t pulse < 1ms 7.1 a i s rms supply current (for each v s pin) v sa = v sb = v s 2.8 a t stg , t op storage and operating temperature range -40 to 150 c symbol parameter test conditions min max unit v s supply voltage v sa = v sb = v s 852v v od differential voltage between vs a , out1 a , out2 a , sense a and vs b , out1 b , out2 b , sense b v sa = v sb = v s ; v sensea = v senseb 52 v v sensea, v senseb voltage range at pins sense a and sense b (pulsed t w < t rr ) (dc) -6 -1 6 1 v v i out rms output current 2.8 a t j operating junction temperature -25 +125 c f sw switching frequency 100 khz L6205 product specification 2 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
thermal data pin connections (top view) (5) the slug is internally connected to pins 1,10,11 and 20 (gnd pins). symbol description powerdip20 so20 powerso20 unit r th-j-pins maximumthermal resistance junction-pins 12 14 - c/w r th-j-case maximum thermal resistance junction-case - - 1 c/w r th-j-amb1 maximumthermal resistance junction-ambient 1 (1) mounted on a multi-layer fr4 pcb with a dissipating copper surface on the bottom side of 6cm 2 (with a thickness of 35m). 40 51 - c/w r th-j-amb1 maximum thermal resistance junction-ambient 2 (2) mounted on a multi-layer fr4 pcb with a dissipating copper surface on the top side of 6cm 2 (with a thickness of 35m). --35 c/w r th-j-amb1 maximumthermal resistance junction-ambient 3 (3) mounted on a multi-layer fr4 pcb with a dissipating copper surface on the top side of 6cm 2 (with a thickness of 35m), 16 via holes and a ground layer. --15 c/w r th-j-amb2 maximum thermal resistance junction-ambient 4 (4) mounted on a multi-layer fr4 pcb without any heat sinking surface on the board. 56 77 62 c/w powerdip20/so20 powerso20 (5) gnd out1 a sense a in2 a in1 a vcp en a out2 a vs a vs b out2 b vboot in2 b en b in1 b sense b out1 b gnd 10 8 9 7 6 5 4 3 2 13 14 15 16 17 19 18 20 12 1 11 gnd gnd d99in1092a gnd out1 b sense b in1 b in2 b 1 3 2 4 5 6 7 8 9 en b vboot out2 b vs b gnd 15 14 13 12 11 d99in1093a 10 20 19 18 17 16 in1 a in2 a sense a out1 a gnd gnd vs a out2 a vcp en a L6205 product specification 3 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
(6) also connected at the output drain of the overcurrent and thermal protection mosfet. therefore, it has to be driven putting in series a resistor with a value in the range of 2.2k w - 180k w , recommended 100k w pin description package name type function so20/ powerdip20 powerso20 pin # pin # 1 6 in1 a logic input bridge a logic input 1. 2 7 in2 a logic input bridge a logic input 2. 3 8 sense a power supply bridge a source pin. this pin must be connected to power ground directly or through a sensing power resistor. 4 9 out1 a power output bridge a output 1. 5, 6, 15, 16 1, 10, 11, 20 gnd gnd signal ground terminals. in powerdip and so packages, these pins are also used for heat dissipation toward the pcb. 7 12 out1 b power output bridge b output 1. 8 13 sense b power supply bridge b source pin. this pin must be connected to power ground directly or through a sensing power resistor. 9 14 in1 b logic input bridge b logic input 1. 10 15 in2 b logic input bridge b logic input 2. 11 16 en b logic input (6) bridge b enable. low logic level switches off all power mosfets of bridge b. this pin is also connected to the collector of the overcurrent and thermal protection transistor to implement over current protection. if not used, it has to be connected to +5v through a resistor. 12 17 vboot supply voltage bootstrap voltage needed for driving the upper powermosfets of both bridge a and bridge b. 13 18 out2 b power output bridge b output 2. 14 19 vs b power supply bridge b power supply voltage. it must be connected to the supply voltage together with pin vs a . 17 2 vs a power supply bridge a power supply voltage. it must be connected to the supply voltage together with pin vs b . 18 3 out2 a power output bridge a output 2. 19 4 vcp output charge pump oscillator output. 20 5 en a logic input (6) bridge a enable. low logic level switches off all power mosfets of bridge a. this pin is also connected to the collector of the overcurrent and thermal protection transistor to implement over current protection. if not used, it has to be connected to +5v through a resistor. L6205 product specification 4 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
electrical characteristics (t amb = 25 c, v s = 48v, unless otherwise specified) symbol parameter test conditions min typ max unit v sth(on) turn-on threshold 6.6 7 7.4 v v sth(off) turn-off threshold 5.6 6 6.4 v i s quiescent supply current all bridges off; t j = -25c to 125c (7) 510ma t j(off) thermal shutdown temperature 165 c output dmos transistors r ds(on) high-side switch on resistance t j = 25 c 0.34 0.4 w t j =125 c (7) 0.53 0.59 w low-side switch on resistance t j = 25 c 0.28 0.34 w t j =125 c (7) 0.47 0.53 w i dss leakage current en = low; out = v s 2ma en = low; out = gnd -0.15 ma source drain diodes v sd forward on voltage i sd = 2.8a, en = low 1.15 1.3 v t rr reverse recovery time i f = 2.8a 300 ns t fr forward recovery time 200 ns logic input v il low level logic input voltage -0.3 0.8 v v ih high level logic input voltage 2 7 v i il low level logic input current gnd logic input voltage -10 a i ih high level logic input current 7v logic input voltage 10 a v th(on) turn-on input threshold 1.8 2.0 v v th(off) turn-off input threshold 0.8 1.3 v v th(hys) input threshold hysteresis 0.25 0.5 v switching characteristics t d(on)en enable to out turn on delay time (8) i load =2.8a, resistive load 100 250 400 ns t d(on)in input to out turn on delay time i load =2.8a, resistive load (dead time included) 1.6 s t rise output rise time (8) i load =2.8a, resistive load 40 250 ns t d(off)en enable to out turn off delay time (8) i load =2.8a, resistive load 300 550 800 ns L6205 product specification 5 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
(7) tested at 25c in a restricted range and guaranteed by characterization. (8) see fig. 1. (9) see fig. 2. t d(off)in input to out turn off delay time i load =2.8a, resistive load 600 ns t fa ll output fall time (8) i load =2.8a, resistive load 40 250 ns t dt dead time protection 0.5 1 s f cp charge pump frequency -25cL6205 product specification 6 of 6 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
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