SYSTEMS INC _ ALLEGRO MICRO 900555 7 336 ) mm 0504338 a Fae mlLer Ea sees T-S21] of SINK OUT [6 NO CONNECTION [Z___}Nc NO CONNECTION [BNC Dwg. PP-023 ABSOLUTE MAXIMUM RATINGS at T, 150C Supply Voltage, Vo ...--. 0-2. ee eee 40 Vv Output Current, lgupe eee eee eee +6.0A Input Voltage, Vip... eee eee eee eee 7.0V Sense Voltage, Veenge ++ eee eee 15V Package Power Dissipation, Pores sree eee cece ee eeas See Graph Operating Temperature Range, Tpit ee eccn eee aces -20C to + 85C Storage Temperature Range, T, -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 output current rating or a junction temperature of +150C. ogre acted HIGH-CURRENT HALF-BRIDGE POWER DRIVER The UDN2955W-2 half-bridge power driver combines a high- current, half-bridge power driver with low-level control and protection circuitry. For PWM applications there are provisions for output current sensing and an ENABLE (active low) input. The output can source or sink up to 6 A continuously. This device features a minimum break- down and sustaining voltage of 40 V. It can be used in pairs for full- bridge operation or in triplets for 3-phase brushless de motors. Protection is included which shuts down the device during over- temperature conditions caused by loss of cooling; internal flyback and clamp diodes are included for switching inductive loads. Internal logic lockout and delays prevent potentially destructive crossover currents. The logic inputs are compatible with TTL and 5 V CMOS logic systems. A similar device, excluding the ENABLE and output current sensing provision, in a 5-lead TO-220 style package, is the UDN2951Z-2. The UDN2955W-2 is supplied in a 12-lead power-tab single in-line plastic package. The tab is at ground potential, allowing multiple devices to share a common heat sink. FEATURES +6 A Continuous Output Current Output Voltage to 40 V Internal Thermal Shutdown TTL and 5 V CMOS Compatible Inputs Integral Transient-Suppression Diodes Always order by complete part number: |UDN2955W-2}. 3-78 - Me e fe L ee YSTEMS INC. weg Pee 3E D m@ 0504338 0005156 3 ALLEGRO MICROS 7 Rayp= 20C N 12cw Ra t \ HEAT SINK a= 14CiW \ ~~ 3.0C/W HEAT SINK Raya = 5.0C P| pa N\A FREE AIA, R, QJA or 7 ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS nN n 50 75 100 125 150 TEMPERATURE IN C Dwg. GP-012A TRUTH TABLE FUNCTIONAL BLOCK DIAGRAM ENABLE o> SOURCE > GROUND om o_o 4 SUPPLY i() SOURCE ouT THERMAL xk SHUTDOWN SINK our 6) SENSE Dwg. FP-009 INPUTS ENABLE SOURCE SINK | SOURCE SINK OUTPUTS TYPICAL APPLICATION O Low Low Low OFF ON Low Low High OFF OFF O Low High Xx ON OFF a High Xx Xx OFF OFF be | X = Irrelevant alg a a i! JU iV Wy iw IO +V DIRECTION oO ENABLE The printed wiring board should utilize a heavy ground plane. For optimum performance, the driver should be soldered directly into the board. The power supply (V.) should be decoupled with an electrolytic capacitor (2 10 pF) as close as possible to pin 2. Owg. EP-0194 3-79 new se - ELECTRICAL CHARACTERISTICS at T, INC = + 25C, T, < + 150C, Vo = 40V 33 D MM 0504338 0005157 0 MMALGR j- Limits Characteristic Symbol Test Conditions Min. Typ. Max. | Units Functional Supply Range Vs 10 _ 40 Vv Output Leakage Current loex SINKoyr = 40 V, SOURCE,,, = 0.8 V, SINK, = 2.0 V <0 50 | pA SOURCE,,,, =0V, SOURCE, = 0.8 V, SINK, = 2.0 V <10 -50] pA Output Sustaining Voltage Voce;sus) loyr = 6.0 A, L =10 mH 40 _ _ Vv Output Saturation Voltage Vegisany SINK jy, =5.0A _ _ 1.5 V SINK oy = 6.0 A - = 20] Vv SOURCE,,,, =-5.0A _ _ 2.0 Vv SOURCE, =-6.0A _ > 2.5 Vv [Input Voltage Logic 1 SOURCE,, or SINK, 2.0 _ _ Vv Logic 0 SOURCE,, or SINK, _ _ 0.8 Vv input Current Logic 1 SOURCE,,, or SINK, = 2.0 V _ 3.0 10 HA Logico | SOURCE, or SINK,, = 0.8 V +A0 10 | pA Propagation Delay tout Sink Driver (includes Turn-On Delay) _ 2.5 _ us Source Driver _ 2.5 _ us torn Sink Driver _ 0.2 _ ps Source Driver (includes Turn-On Delay) _ 2.5 _ Ls Supply Current Ison SOURCE, = 2.0 V _ 10 15 mA SOURCE,,, = SINK,, = 0.8 V 20 25 | mA lgorR SOURCE, = 0.8 V, SINK, = 2.0 V 8.0 10 mA Flyback Diode Forward Voltage V. 1, =6.0A _ _ 2.8 v Clamp Diode Forward Voltage Ve -=6.0A 21 Vv Diode Leakage Current lp Each Diode, V, =40V _ <1.0 50 HA Thermal Shutdown T, 165 _ C NOTE: Typical Data is given for circuit design information only. Negative current is defined as coming out of (sourcing) the specified device pin. 3-80 to ome