dual full-bridge pwm motor driver the l6219ds motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two dc motors. both bridges are capable of sustaining 45 v and include internal pulse-width modulation (pwm) control of the output current to 750 ma. the outputs have been optimized for a low output saturation voltage drop (less than 1.8 v total source plus sink at 500 ma). for pwm current control, the maximum output current is deter- mined by the user?s selection of a reference voltage and sensing resistor. two logic-level inputs select output current limits of 0, 33, 67, or 100% of the maximum level. a phase input to each bridge determines load current direction. the bridges include both ground clamp and flyback diodes for protection against inductive transients. internally generated delays prevent cross-over currents when switching current direction. special power-up sequencing is not required. thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits. the l6219ds is supplied in a 24-pin surface-mountable soic. its batwing construction provides for maximum package power dissipation in the smallest possible construction. this device is also available on special order for operation from -40c to +85c or to +105c. a lead- free version (100% matte tin leadframe) is also available. features interchangeable with sgs l6219ds 750 ma continuous output current 45 v output sustaining voltage internal clamp diodes internal pwm current control low output saturation voltage internal thermal shutdown circuitry similar to dual pbl3717, uc3770 data sheet 29319.43d l6219ds absolute maximum ratings at t j 150c motor supply voltage, v bb .................... 45 v output current, i out (peak) ........................................ +1.0 a (continuous) .......................... +750 ma logic supply voltage, v cc ................... 7.0 v logic input voltage range, v in ......................... -0.3 v to v cc +0.3 v output emitter voltage, v sense ............ 1.5 v package power dissipation, p d ........................................................ see graph operating temperature range, t a ................................. -20c to +85c storage temperature range, t s ............................... -55c to +150c output current rating may be limited by duty cycle, ambient temperature, and heat sinking. under any set of conditions, do not exceed the specified peak current rating or a junction temperature of +150c. 1 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 2 1 v cc pwm 2 pwm 1 2 v bb 1 ground ground ground ground 02 i 12 i phase 2 v ref 2 2 rc 1 rc v ref 1 phase 1 11 i 2b out sense 2 2 comp in 2a out 1a out 1 comp in sense 1 1b out 01 i load supply logic supply dwg. pp-005-3 always order by complete part number: part number package l6219ds 24-pin batwing soic L6219DS-T 24-pin batwing soic; lead-free
115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 l6219ds dual full-bridge motor driver copyright ? 1998, 2003 allegro microsystems, inc. pwm current-control circuitry truth table phase out a out b hhl llh v ref dwg. ep-007-5 v bb comp in one shot source disable rc + i 0 i 1 10 sense out a out b channel 1 terminal numbers shown. r c r s r t c c c t 24 20 k ? 40 k ? 10 k ? 21 1 23 22 14 20 17 15 50 75 100 125 150 2.5 1.5 1.0 0.5 0 temperature in c 2.0 25 dwg. gp-019c r = 6 c/w jt r = 77 c/w ja allowable package power dissipation in watts r = 49 c/w ja r ja is measured on typical two- sided pcb with minimal copper ground area (77 c/w) or with 3.57 in 2 copper ground area (49 c/w). see also, application note 29501.5, improving batwing power dissipation .
l6219ds dual full-bridge motor driver limits characteristic symbol test conditions min. typ. max. units output drivers (out a or out b ) motor supply range v bb 10 ? 45 v output leakage current i cex v out = v bb ? < 1.0 50 a v out = 0 ? <-1.0 -50 a output sustaining voltage v ce(sus) i out = 750 ma, l = 3.0 mh 45 ? ? v output saturation voltage v ce(sat) sink driver, i out = +500 ma ? 0.4 0.6 v sink driver, i out = +750 ma ? 1.0 1.2 v source driver, i out = -500 ma ? 1.0 1.2 v source driver, i out = -750 ma ? 1.3 1.5 v clamp diode leakage current i r v r = 45 v ? < 1.0 50 a clamp diode forward voltage v f i f = 750 ma ? 1.6 2.0 v driver supply current i bb(on) both bridges on, no load ? 20 25 ma i bb(off) both bridges off ? 5.0 10 ma control logic input voltage v in(1) all inputs 2.4 ? ? v v in(0) all inputs ? ? 0.8 v input current i in(1) v in = 2.4 v ? <1.0 20 a v in = 0.8 v ? - 3.0 -200 a reference voltage range v ref operating 1.5 ? 7.5 v current limit threshold v ref /v compin i 0 = i 1 = 0.8 v 9.5 10 10.5 ? i 0 = 2.4 v, i 1 = 0.8 v 13.5 15 16.5 ? i 0 = 0.8 v, i 1 = 2.4 v 25.5 30 34.5 ? thermal shutdown temperature t j ? 170 ? c total logic supply current i cc(on) i 0 = i 1 = 0.8 v, no load ? 40 50 ma i cc(off) i 0 = i 1 = 2.4 v, no load ? 10 14 ma fixed off-time t off r t = 56 k ? , c t = 820 pf ? 46 ? s (at trip point) electrical characteristics at t a = +25c, t j 150c, v bb = 45 v, v cc = 4.75 v to 5.25 v, v ref = 5.0 v (unless otherwise noted).
115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 l6219ds dual full-bridge motor driver applications information pwm current control the l6219ds dual bridge is designed to drive both windings of a bipolar stepper motor. output current is sensed and controlled independently in each bridge by an external sense resistor (r s ), internal comparator, and monostable multivibrator. when the bridge is turned on, current increases in the motor winding and it is sensed by the external sense resistor until the sense voltage (v compin ) reaches the level set at the comparator?s input: i trip = v ref /10 r s the comparator then triggers the monostable which turns off the source driver of the bridge. the actual load current peak will be slightly higher than the trip point (especially for low-inductance loads) because of the internal logic and switching delays. this delay (t d ) is typically 2 s. after turn-off, the motor current decays, circulating through the ground-clamp diode and sink transistor. the source driver?s off time (and therefore the magnitude of the current decrease) is determined by the monostable?s external rc timing components, where t off = r t c t within the range of 20 k ? to 100 k ? and 100 pf to 1000 pf. the fixed-off time should be short enough to keep the current chopping above the audible range (< 46 s) and long enough to properly regulate the current. because only slow-decay current control is available, short off times (< 10 s) require additional efforts to ensure proper current regulation. factors that can negatively affect the ability to properly regulate the current when using short off times include: higher motor-supply voltage, light load, and longer than necessary blank time. when the source driver is re-enabled, the winding current (the sense voltage) is again allowed to rise to the comparator?s threshold. this cycle repeats itself, main- taining the average motor winding current at the desired level. loads with high distributed capaci-tances may result in high turn-on current peaks. this peak (appearing across r s ) will attempt to trip the comparator, resulting in erroneous current control or high-frequency oscillations. an external r c c c time delay should be used to further delay the action of the comparator. depending on load type, many applications will not require these external components (sense connected to comp in). pwm output current wave form load current paths + ? 0 dwg. wm-003-1a v phase i out t d t off i trip dwg. e p-006-1 r s bb v bridge on source off all off
l6219ds dual full-bridge motor driver logic control of output current two logic level inputs (l 0 and i 1 ) allow digital selection of the motor winding current at 100%, 67%, 33%, or 0% of the maximum level per the table. the 0% output current condition turns off all drivers in the bridge and can be used as an output enable function. current-control truth table l 0 i 1 output current ll v ref /10 r s = i trip hlv ref /15 r s = 2/3 i trip lhv ref /30 r s = 1/3 i trip hh 0 these logic level inputs greatly enhance the implementation of p-controlled drive formats. during half-step operations, the l 0 and l 1 allow the p to control the motor at a constant torque between all positions in an eight-step typical application sequence. this is accomplished by digitally selecting 100% drive current when only one phase is on and 67% drive current when two phases are on. logic highs on both l 0 and l 1 turn off all drivers to allow rapid current decay when switching phases. this helps to ensure proper motor operation at high step rates. the logic control inputs can also be used to select a reduced current level (and reduced power dissipation) for ?hold? condi- tions and/or increased current (and available torque) for start-up conditions. general the phase input to each bridge determines the direction motor winding current flows. an internally generated deadtime (approximately 2 s) prevents crossover currents that can occur when switching the phase input. all four drivers in the bridge output can be turned off between steps (l 0 = l 1 ? 2.4 v) resulting in a fast current decay through the internal output clamp and flyback diodes. the fast current decay is desirable in half-step and high-speed applications. the phase, l 0 ,and i 1 inputs float high. varying the reference voltage (v ref ) provides continuous control of the peak load current for microstepping applications. thermal protection circuitry turns off all drivers when the junction temperature reaches +170c. it is only intended to protect the device from failures due to excessive junction temperature and should not imply that output short circuits are permitted. the output drivers are re-enabled when the junction temperature cools to +145c. the l6219ds output drivers are opti- mized for low output saturation voltages?less than 1.8 v total (source plus sink) at 500 ma. under normal operating conditions, when combined with the excellent thermal proper- ties of the batwing package design, this allows continuous operation of both bridges simultaneously at 500 ma. from p v ref dwg. ep-008b1 v bb from p 1 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 2 v cc 2 v bb 1 v ref +5 v stepper motor r s r s r c r c r t c t c c c c + pwm 1 pwm 2 1 820 pf 56 k ? c t 820 pf 56 k ? r t
115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 l6219ds dual full-bridge motor driver 0 to 8 1 2 3 0.2992 0.2914 0.6141 0.5985 0.419 0.394 0.020 0.013 0.0926 0.1043 0.0040 min . 0.0125 0.0091 dwg. ma-008-25a in 0.050 bsc 24 13 note 1 note 3 0.050 0.016 0 to 8 1 2 3 7.60 7.40 15.60 15.20 10.65 10.00 0.51 0.33 2.65 2.35 0.10 min . 0.32 0.23 dwg. ma-008-25a mm 1.27 bsc 24 13 note 1 note 3 1.27 0.40 dimensions in inches (for reference only) dimensions in millimeters (controlling dimensions) notes: 1. webbed lead frame. leads indicated are internally one piece. 2. lead spacing tolerance is non-cumulative. 3. exact body and lead configuration at vendors option within limits shown. 4. supplied in standard sticks/tubes of 31 devices or add tr to part number for tape and reel.
l6219ds dual full-bridge motor driver bridge & half-bridge drivers in order of 1) output current and 2) output voltage output ratings * features internal internal part ma v description diodes outputs protection number ? 500 18 dual pwm full bridge x dmos x 3965 650 30 dual pwm full bridge x bipolar x 3966 30 dual pwm full bridge x bipolar x 3968 750 30 dual microstepping full bridge x darlington/satlington? x 3967 45 dual pwm full bridge x bipolar x 2916 45 dual pwm full bridge x bipolar x 2919 45 dual pwm full bridge x bipolar x 6219 800 33 dual pwm full bridge x bipolar x 3964 1300 50 pwm full bridge x bipolar x 3953 1500 45 dual pwm full bridge x bipolar x 2917 50 pwm full bridge sync rect dmos x 3948 50 microstepping full bridge x darlington/satlington? x 3955 50 microstepping full bridge x darlington/satlington? x 3957 50 dual pwm full bridge sync rect dmos x 3974 2000 50 pwm full-bridge x darlington x 3952 50 pwm full-bridge sync rect dmos x 3958 2500 35 dual microstepping full bridge sync rect dmos x 3977 3000 50 3-? pwm driver sync rect dmos x 3936 50 pwm full-bridge sync rect dmos x 3959 28 3-? mosfet controller C dmos x 3933 40 3-? mosfet controller C dmos x 3935 50 3-? mosfet controller C dmos x 3932 50 3-? mosfet controller C dmos x 3938 * current is maximum specified test condition, voltage is maximum rating. see specification for sustaining voltage limits or over-current protection voltage limits. ? complete part number includes additional characters to indicate operating temperature range and package style.
115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 l6219ds dual full-bridge motor driver the products described here are manufactured under one or more u.s. patents or u.s. patents pending. allegro microsystems, inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. before placing an order, the user is cautioned to verify that the information being relied upon is current. allegro products are not authorized for use as critical components in life-support devices or systems without express written approval. the information included herein is believed to be accurate and reliable. however, allegro microsystems, inc. assumes no responsi- bility for its use; nor for any infringement of patents or other rights of third parties which may result from its use.
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