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| Preliminary Data Sheet No.PD60180-B IR3220 FULLY PROTECTED H-BRIDGE FOR D.C. MOTOR Features * * * * * * * Over temperature shutdown Over current shutdown Inrush current limited by Soft-Start sequence E.S.D protection Status feedback Sleep mode for direct battery connection Braking/non-braking operation Product Summary Rds(on) V cc.op. I cont. (Ta = 85oC) Ishutdown Oper. Freq. 12m max. 5.5 to 35V 7.0A 30A 20 kHz Description The IR 3220 is a Fully Protected Dual High Side Switch I.C. With two additional Low Side switches (e.g. IRF7474 - available 01/01), the IR 3220 drives and controls the whole H bridge topology. It provides shoot-through protection for each leg, H bridge logic control, soft-start sequence and over-current /overtemp. protections. The signals IN1 and IN2 select the operation modes and the PWM Soft-Start sequence cycles the corresponding active low side switch in order to limit the motor inrush current. By using the recommended part number and the proper cooling, the inner High Side IPS protects the whole H bridge function. The Soft-Start sequence is programmed by an RC time constant and reset itself automatically. Packages 8 Lead SOIC (e.g. IRF7474) 20 Lead SOIC (wide body) (IR3220) Typical Connection + Bat. VCC Gnd Vrc SS IN 1 LS gate 1 M1 +5V 10 k 14! M2 LS gate 2 DG IN 2 Diagnostic Feedback R 10 k Clockwise motion Rg D G SO 8 Mosfet Rg D G S S SO 8 Mosfet 10 k Counter clockwise motion C Micro Controller Electrical stop Electrical stop 0V www.irf.com 1 IR3220 Absolute Maximum Ratings Absolute maximum ratings indicates sustained limits beyond which damage to the device may occur. All voltage parameters are referenced to Gnd lead. (TAmbient = 25o C unless otherwise specified). Symbols with (2) refer to M2 output. Symbol Vm1 (2) Vin1 (2) Vcc/gnd I in1 (2) Vg1 (2) Vss Vrc Irc Vdg Idg Isd cont. Isd pulsed ESD 1 ESD 2 PD TJ max. TL Vcc max. Ig1 (2) max. Ig1 (2) avg. Parameter Maximum M1 (M2) voltage (active clamp) Maximum IN 1 (IN 2) voltage Maximum Vcc pin to GND pin voltage Maximum IN1 (IN 2) current Maximum Gate 1 ( Gate 2 ) voltage Maximum SS voltage Maximum Vrc voltage Maximum output current of the Vrc pin Maximum diagnostic output voltage Maximum diagnostic output current Diode max. permanent current (Rth=60C/W) (1) (Rth=45C/W) (1) Diode max. pulsed current (1) Electrostatic discharge ( human body model C=100pF, R=1500) Electrostatic discharge ( machine model C=200pF, R=0, L=10H) Maximum power dissipation ( Rth = 60C/W ) Max. storage & operating junction temperature Lead temperature ( soldering 10 seconds ) Maximum Vcc voltage Maximum gate current (Ton < 5S) Maximum average gate current Min. Max. Units V mA V mA V mA A Vcc-37 Vcc+0.3 -0.3 5.5 0.3 50 -1 10 -0.3 7.5 -0.3 5.5 -0.3 5.5 1 -- -0.3 5.5 -1 10 3.0 -- -- -- -- -- -- -40 -- -- -- -- 4.0 15 tbd tbd 1.5 +150 300 37 100 10 V W C V mA (1) Limited by junction temperature (pulsed current limited also by internal wiring) Thermal Characteristics Symbol Rth 1 Rth 2 Parameter Thermal junction to amb. resistance (stnd footprint 1 MOS on) Thermal junction to ambient resistance (1" sq. footprint 1 MOS on) Typ. 60 45 Max. -- -- Units C/W 2 WWW.IRF.COM IR3220 Recommended Operating Conditions These values are given for a quick design. For operation outside these conditions, please consult the application notes. Symbol Vcc Vin1 (2) Vin1 (2) Iout Ta=85C Iout Ta=105C R in R dg R C R gate Parameter Continuous Vcc voltage (2) High level IN 1 (IN 2) input voltage Low level IN 1 (IN 2) input voltage Continuous output current (Rth/amb < 5 C/W, Tj = 125C) Continuous output current (Rth/amb < 5 C/W, Tj = 125C) Recommended resistor in series with IN pin Recommended pull-up resistor on DG pin Soft-Start resistor Soft-Start capacitor Recommended gate resistor for Low Side Switch Min. 8 4 -0.3 -- -- 10 1 5.0 0.1 0 Max. 18 5.5 0.9 7.0 4.5 20 20 100 3.3 50 Units V A k F Static Electrical Characteristics (Tj = 25oC, Vcc = 14V unless otherwise specified.) Symbol Rds1 on Rds2 on Vcc oper. Vclamp1 (2) Vf1 (2) IM1 (2) leakage Icc off Icc on Vdgl Idg leakage Vih1 (2) th. Vil1 (2) th. Iin1 (2) Vccuv VccuvVss+ VssIss leakage Parameter ON state resistance Tj = 25oC ON state resistance Tj = 150oC Functional voltage range Vcc to M1 (M2) clamp voltage Body diode 1 (2) forward voltage M1 (M2) output leakage current Supply current when off (sleep mode) Supply current when on Low level diagnostic output voltage Diagnostic output leakage current IN1 (IN2) high threshold voltage IN1 (IN2) low threshold voltage ON state IN1 (IN2) positive current Vcc UVLO positive going threshold Vcc UVLO negative going threshold SS high level threshold SS low level threshold SS pin leakage current Min. Typ. -- -- 5.5 37 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 9 16 -- 40 0.9 10 10 8 0.3 -- 2.6 2.0 25 5 4 4 1 0.1 Max. Units Test Conditions 12 22 35 48 -- 50 50 -- -- 10 -- -- -- -- -- -- -- 10 m Vin1,2 = 5V,1m1,2 = 5A Id =10mA see Figs.1,2 Id = 5A, Vin1,2 = 0V Vm1, 2 = 0V; Tj = 25C Vin1(2) = 0V Vin1 = 5V Idg = 1.6mA Vdg = 5.5V V A mA V A V A Vin1, 2 = 5V V A WWW.IRF.COM 3 IR3220 Switching Electrical Characteristics Vcc = 14V, Resistive Load = 3.0, Tj = 25oC, (unless otherwise specified). Symbol Tdon Tr1 Tr2 Parameter Min. Typ. Max. Units -- -- -- -- -- -- -- -- 15 50 2.0 -- 5 4 65 3 65 8 5 500 20 -- -- 7 -- -- -- -- -- -- -- -- 30 -- -- -- s Test Conditions Turn-on delay time Rise time to Vout = Vcc -5V Rise time from the end of Tr1 to Vout = 90% of Vcc dV/dt (on) Turn ON dV/dt Tdoff Turn-off delay time Tf Fall time to Vout = 10% of Vcc dV/dt (off) Turn OFF dV/dt IN1 (2) max. freq. Max. frequency on IN1 (IN2) Soft-Start freq. Soft-Start oscillator frequency Ig1 (2) min. Min. Gate 1 (Gate 2) current Trd Min. IN1 (2) OFF time to reset SS Vg1 Gate 1 (gate 2) voltage see figure 3 V/s s V/s Hz kHz mA ms V see figure 4 low side driver C=3.0F, IN1 = IN2 Protection Characteristics Symbol Parameter Tsd Isd Treset Over-temperature threshold Over-current threshold Minimum time to reset protections Min. -- 25 -- Typ. 165 30 100 Max. Units Test Conditions -- 35 -- oC A S See figure 2 See figure 2 IN1 = IN2 = 0V Note: The low side switches present sufficient cooling capability in order to have the whole H Bridge function protected by the IR3220 inner temperature sensor. Functional Block Diagram SS Vrc Ref. Soft Start duty cycle + S S reset uvlo Oscillator Gnd VCC IN 1 VCC H Bridge logic control & status feedback 40 V Active Clamp 40 V Active Clamp IN 2 DG Shoot-through protection Over current shutdown Over temp. protection Over current shutdown Shoot-through protection G1 Low Side Driver Low Side Driver G2 M1 M2 Gnd 4 WWW.IRF.COM IR3220 Truth Table IN1 IN2 L L L H L H H L H L H H MODES Stand-by with braking - sleep mode** Foward rotation (normal operation) Foward rotation (protection triiggered) Reverse rotation (normal operation) Reverse rotation (protection triggered) Stand-by without braking DG H H L H L H HS1 OFF OFF OFF ON OFF OFF LSS1 ON ON* ON* OFF OFF OFF HS2 OFF ON OFF OFF OFF OFF LSS2 ON OFF OFF ON* ON* OFF SS reset ON OFF OFF OFF OFF ON * During Soft-start sequence, the low side part is switching. ** Protections are reset in this mode Lead Definitions Vcc M1 M2 G1 G2 Gnd Positive power supply Motor 1 output ( high side source - leg 1 ) Motor 2 output ( high side source - leg 2 ) Gate 1 drive output ( low side gate - leg 1 ) Gate 2 drive output ( low side gate - leg 2 ) Power supply return IN1 IN2 Dg Vrc SS Logic input 1 ( Leg 1 Cdt. / mode ) Logic input 2 ( Leg 2 Cdt. / mode ) Diagnostic output ( open drain ) Voltage ref. output ( soft-start RC ) RC soft-start input ( the voltage on this input drives the switching duty cycle ) Recommended Low Side MOSFET e.g. IRF7413 OR a 10m /40V - SOIC 8 packaged Power Mosfet Lead Assignments V cc Vcc m 1 m 1 m 1 nc g1 G nd In1 Vrc D DDD V cc Vcc m 2 m 2 m 2 nc g2 In2 D g S S SSSG 8 Lead - SOIC e.g. IRF7474 Part Number 20 Lead - SOIC (wide body) IR3220 WWW.IRF.COM 5 IR3220 Soft-start sequence IN1 (IN2) SS M1-M2 (M2-M1) Vss+ VssDuty cycle modulation follows SS voltage Tss ( approximately 1.4 x RC time constant ) Trd t t t Permanent Switching Operation (without external RC time constant) +5V Additional Schottky diodes have to be implemented if the I.C temperature appears too high. A over-voltage protection may be needed depending on the power supply wire length Vcc Micro Diagnostic Controller Additional Schottky diodes Dg In1 In2 ss +Bat Over-voltage protection Direction & Braking Speed IR 3220 DC Motor Gnd Star Connection 0V -Bat T clamp 5V IN1 (2) 0 V IN1 (2) t < T reset I shutdown t > T reset I M1(2) I M1(2) M1(2) 0V V clamp ( + Vcc ) Tj DG Tsd T shutdown 5V 0V ( see IPS Appl . Notes to evaluate power dissipation ) Figure 1 - Active clamp waveforms Figure 2 - Protection Timing diagram 6 WWW.IRF.COM IR3220 IN 1(2) Vcc 90% Vcc - 5 V IN1(2) 90% M1(2) 10% dV/dt on Td off Tr 1 Tr 2 Tf dV/dt off M1 (2) 10% Td on Figure 3 - Switching Time Definitions (turn-on) Figure 7 - Switching Time Definitions (turn-off) IN1 t IN2 t SS t M1 Soft-Start sequence t M2 Breaking Mode (M1 & M2 grounded) Stand-by Mode (M1 & M2 opened) t Motor Current t Figure 5 - IN1 (2) & M1 (2) Timing Diagrams WWW.IRF.COM 7 IR3220 50 40 30 6 5 4 3 IN1H (2) IN1L (2) IN1 (2) Hyst. 20 2 10 0 -50 -25 1 0 0 25 50 75 100 125 150 -50 0 50 100 150 Figure 6 - IN1 (2) current (A) vs Tj (oC) Figure 7 - IN1 (2) thresholds (V) vs Tj (oC) 30 15 12.5 - - - 1'' square footprint ------- standard footprint 20 10 7.5 10 5 2.5 0 0 -50 -25 0 25 50 75 100 125 150 -50 0 50 100 150 200 Figure 8 - Rdson (m) vs Tj (oC) Figure 9 - Max. Cont. current (A) vs Amb. Temp. (oC) 8 WWW.IRF.COM IR3220 100 1000 10 100 1 10 0 1 0 1.00E-06 1.00E-04 1.00E-02 1.00E+00 1.00E+02 1.00E+04 0 1.00E03 1.00E02 1.00E- 1.00E+ 1.00E+ 1.00E+ 1.00E+ 01 00 01 02 03 Figure 10 - Transient Thermal Imped. (oC/W) vs Time (s) Figure 11 - Iclamp (A) vs Power Supply Wire Inductance (mH - single pulse) Case Outline - 8 Lead SOIC (MS-012AA) 01-0021 09 4/12/2000 WWW.IRF.COM 9 IR3220 Case Outline 20 Lead SOIC (wide body) (MS-013AC) 01-3080 00 IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 Data and specifications subject to change without notice. 3/9/2001 10 WWW.IRF.COM |
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