UDN-2935Z ALLEGRO
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INTEGRATED CIRCUIT UDN-2935Z aad S ) R Hy G UE ENGINEERING BULLETIN UDN-2950Z {42 THE MARK OF RELIABILITY ae a Penn Central unit 24 UDN-2935Z AND UDN-2950Z ae | BIPOLAR HALF-BRIDGE MOTOR DRIVERS “Be gee FEATURES es ep , @ 3.5A Peak Output oa ae @ 37V Min. Output Breakdown ; Ce Bong © Output Transient Protection 2S eae otf @ Tri-State Outputs # Oo. © TTL, CMOS, PMOS, NMOS Compatible Inputs A te - nee © Internal Thermal Shutdown C $ = a © High-Speed Chopper (to 100 KH) A A] Ng] ee “Ae © UDN-2935Z Replaces SG3635P ev R ae a Ey © UDN-29502 Replaces UDN-2949Z, SN75605 LY n mie | AG ges © 10-220 Style Packages J ay i l Be Bot! Type UDN-2935Z and UDN-2950Z ® sce \\ Shey integrated circuits are designed for servo- ys 0 m 4 5 es See motor applications using pulse-width modulation. * jay + g E os el - These two high-current, monolithic half-bridge > * 2 > ° z ee motor drivers combine a sink-and-source driver 3 agers shifting, logic stages, and a voltage regulator forgfh- UDN-2935; UDN-2950Z mae gle-supply operation. Sart The UDN-2935Z output goes high wig angi Electrig stepper motor translator/ 4aB wise low input at pin 2; it is especially desir®le' ios. driv , Wa de stepper motor control (see die ‘a microprocessor applications. T! out- E ingyBulletin 26184). Soran: put goes high with an active, at pin 2; i motor drivers’ single-chip construction and Pas ed inputs can be tied toget! singv-wire co! Boyer-tab TO-220 package enable cost-effective oo Pt The input circuitry Qf bORg deWices is coy i reliable system designs supported by excellent aoe Sal with TTL and | MOS, 7 power-dissipation ratings, minimum size, and ease Syateacatey NMOS logic. e logic | tigate of installation; because the package’s heat tab is at bee a output) thg e' ource and i from ground potential, several devices can share a com- eres pd turning OMsimgjtaneously. mon heat sink without insulating hardware. ee I pal Plications, Egkepper-drive mode is The Type UDN-2950Z half-bridge motor driver Lene cFag d by lovgsO gr eissipation levels, low is an improved version of the popular Sprague eae ion voltages band fhort chopper-storage Type UDN-2949Z, described in Engineering Bul- Bs: a les for the si RVEMPThe motor drivers can be letin 29318. The new driver has a higher output- Sees eu ised in pairs for W@ll-bridge operation, or as triplets breakdown rating, logic lockout, and an internal eae in three-phage brushless d-c motor-drive applica- high-temperature shutdown that is triggered at ap- Dane a tions. Thgfcan also be teamed with the Sprague proximately 175°C. era Bes Re a SEMICONDUCTOR DIVISION <e oem! SPRAGUE ELECTRIC COMPANY eed 115 Northeast Cutoff, WORCESTER, MASS. 01606 tee ag is I fence eg eaEES
BIPOLAR HALF-BRIDGE MOTOR DRIVERS TT ABSOLUTE MAXIMUM RATINGS Continuous Output Current, Iu... 2.0 ee eee cece eee eee veveeeees EQOA ALLOWABLE POWER DISSIPATION AS A FUNCTION OF AMBIENT TEMPERATURE a \\ é z z ee B “8. eh UN \\ ge S75 5 g On i mw | 8 toe IN Cy | | PEN 25 50 7S 100 125 150 AMBIENT TEMPERATURE, Ta, IN °c OwG, NO. h-12,000A TRUTH TABLE Source Driver, Sink Driver, Output, Ping Pin 2 Pin 5 UDN-2935Z UDN-2950Z Low Low High Low Low High High High Z High Low Low High High High High Z High Copyright © 1983, Sprague Electric Company, North Adams, Mass -2-
BIPOLAR HALF-BRIDGE MOTOR DRIVERS en FUNCTIONAL BLOCK DIAGRAMS UDN-2935Z Os SOURCE iB input © > . <€ cnurens] @ ouTPUT st, oe tp. Sf O- 2.1V @ GROUND , UDN-2950Z O +Vs SOURCE @ ree INPUT lo @ OUTPUT @ GROUND dwa.No. Ate, 112 -3-+-
BIPOLAR HALF-BRIDGE MOTOR DRIVERS SS ELECTRICAL CHARACTERISTICS at T, = +25°C, Tap = +70°C, V; = 35 V (unless otherwise noted) Source Driver Input, Pin 2 Sink Driver | Output, Characteristic UDN-29352 | UDN-2950Z | Input,Pin5 | Pind [ Min. Max. | Units | Output Leakage Current aay | oav | aay [ov | — | — 500] na Output Sustaining Voltage 08V 0.8 to 24V Output Saturation Voltage [_osv | 2av | av [-20a | — | as — | | —zav {egy fay {20a {=f 2 | v Output Source Current 0.8V 24V fF — | — [-20 — | a | Output Sink Current | zav | oav | ov | — | — | 20° — Input Open-Circuit Voltage =250 pA | —250 pA —250pa | — | — | — 75 Input Current — [av av fe PT 700 Propagation Delay ostozav | 20a | — | — 750 | os _| 08to24V | 24t00.8V 24v_ | 20a | — | — 20 Clamp Diode Forward Voltage NC 22 NOTE: Positive (negative) current is defined as going into (coming out of) the specified device pin. TEST FIGURE 1 TEST FIGURE 2 TE TEA (14 aks O y ke > J) Ip O O 2.4V 0.8 an Owg.No. A-12,118 10a, 3.5 mH Dwg.No. A-12,117 —4-
BIPOLAR HALF-BRIDGE MOTOR DRIVERS TS APPLICATION NOTES It should be noted that an additional power dissipation component may arise from crossover currents flowing from supply to ground when current direction through the load is reversed. This is due to differences in the switching speeds between the source and sink drivers. Although the inter- ' nal logic lockout protects these devices from catastrophic failure, the crossover power component can cause device operation at substantially | higher junction temperatures. If timing conditions are ignored, the magnitude of this power can be approximated as: Py=VsXIextxf where Vs = supply voltage Ic. = crossover current (= 3.5.A max.) t = crossover current duration (~ I ws) f = frequency of direction change In some applications (high switching speeds or high package power dis- sipation), it is recommended that the inputs be driven separately, and that the sink driver not be turned ON for at least 2 us (maximum source tp)) after the source driver input is turned OFF. The sink driver should be turned OFF at least 750 ns (maximum sink tpp) before the source driver is turned ON. RECOMMENDED TIMING CONDITIONS (UDN-2950Z shown) oe ee | Ve >750ns fee 750 ns fe-> 2us fe > 2us 1 ‘SPEED (PWM) | Ht ” IH —< 2A ' Dwg.No. A-12,120 i SOURCE : INPUT, rr a SINK —+| aus BR | fe 50 ns INPUT, V. | lf apt B28 -5-
BIPOLAR HALF-BRIDGE MOTOR DRIVERS nro mre en ees TYPICAL APPLICATIONS 3-PHASE BRUSHLESS D-C MOTOR DRIVE
7800 UDN- 2950Z UON - 29502 UDN -2950Z
vow-20207 ! po iw 5 | ra Fx ee S| to UGN-3030T ty hs fo | AFH L | r—H HT Sense SS ee ee eee tt 3 pon COSA HH Has Sel Cs} X— 10} ey | be. o. 83 | a ne SINGLE-WINDING D-C FULL-BRIDGE D-C OR STEPPER MOTOR DRIVE SERVO MOTOR DRIVE UDN-2950Z UDN-2935Z UDN-2950Z ron c4 ron AA AA] ATA Dwg.No. A-12,114 [| Ga) -6-
BIPOLAR HALF-BRIDGE MOTOR DRIVERS. A DIMENSIONS IN INCHES
9.420 O40
0.161 0.380 0.139 + 0.055 — 7 TI 0.020 . 0.135 0.100 388 mon . : | 4 0 , i | 0.860 ous, 0.080 0.580 0.500 0.045 0.012 1234 0.34 ' Thecus 0.020 0.268 Dwg. No. A-10,460A IN DIMENSIONS IN MILLIMETRES Based on 1” = 25.4 mm 10.66 4.82 4.08 9.66 3.56 3.54 1.39 | {host 3.42 25 2.54 PtH (6.51 ' i 2.92 2.04 14.73 12.70 114 0.31 1234 OST 6.80 Dwg. No. A-10,460R MM NOTES: 1. Lead spacing tolerance is non-cumulative. 2. Exact body and lead configuration at vendor's option within limits shown. -7-