L6227

L6227 DMOS DUAL FULL BRIDGE DRIVER WITH PWM CURRENT CONTROLLER s s s s s s s s s s s OPERATING SUPPLY VOLTAGE FROM 8 TO 52V 2.8A OUTPUT PEAK CURRENT (1.4A DC) RDS(ON) 0.73Ω TYP. VALUE @ Tj = 25 °C OPERATING FREQUENCY UP TO 100KHz NON DISSIPATIVE OVERCURRENT PROTECTION DUAL INDEPENDENT CONSTANT tOFF PWM CURRENT CONTROLLERS SLOW DECAY SYNCHRONOUS RECTIFICATION CROSS CONDUCTION PROTECTION THERMAL SHUTDOWN UNDER VOLTAGE LOCKOUT INTEGRATED FAST FREE WHEELING DIODES PowerDIP24 (20+2+2) PowerSO36 SO24 (20+2+2) ORDERING NUMBERS: L6227N (PowerDIP24) L6227PD (PowerSO36) L6227D (SO24) TYPICAL APPLICATIONS s BIPOLAR STEPPER MOTOR s DUAL DC MOTOR DESCRIPTION The L6227 is a DMOS Dual Full Bridge designed for motor control applications, realized in MultiPowerBLOCK DIAGRAM BCD technology, which combines isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. The device also includes two independent constant off time PWM Current Controllers that performs the chopping regulation. Available in PowerDIP24 (20+2+2), PowerSO36 and SO24 (20+2+2) packages, the L6227 features a non-dissipative overcurrent protection on the high side Power MOSFETs and thermal shutdown. VBOOT VBOOT VBOOT VBOOT CHARGE PUMP OCDA OVER CURRENT DETECTION 10V 10V VSA VCP OUT1A OUT2A THERMAL PROTECTION ENA IN1A IN2A VOLTAGE REGULATOR GATE LOGIC SENSEA PWM ONE SHOT MONOSTABLE MASKING TIME + SENSE COMPARATOR BRIDGE A OVER CURRENT DETECTION VSB VREFA RCA 10V 5V OCDB OUT1B OUT2B SENSEB VREFB RCB BRIDGE B ENB IN1B IN2B GATE LOGIC D99IN1085A September 2003 1/22 L6227 ABSOLUTE MAXIMUM RATINGS Symbol VS VOD Parameter Supply Voltage Differential Voltage between VSA, OUT1A, OUT2A, SENSEA and VSB, OUT1B, OUT2B, SENSEB Bootstrap Peak Voltage Input and Enable Voltage Range Voltage Range at pins VREFA and VREFB Test conditions VSA = VSB = VS VSA = VSB = VS = 60V; VSENSEA = VSENSEB = GND VSA = VSB = VS Value 60 60 Unit V V VBOOT VIN,VEN VREFA, VREFB VS + 10 -0.3 to +7 -0.3 to +7 -0.3 to +7 -1 to +4 V V V V V A VRCA, VRCB Voltage Range at pins RCA and RCB VSENSEA, VSENSEB IS(peak) Voltage Range at pins SENSEA and SENSEB Pulsed Supply Current (for each VS pin), internally limited by the overcurrent protection RMS Supply Current (for each VS pin) Storage and Operating Temperature Range VSA = VSB = VS; tPULSE < 1ms VSA = VSB = VS 3.55 IS Tstg, TOP 1.4 -40 to 150 A °C RECOMMENDED OPERATING CONDITIONS Symbol VS VOD Parameter Supply Voltage Differential Voltage Between VSA, OUT1A, OUT2A, SENSEA and VSB, OUT1B, OUT2B, SENSEB Voltage Range at pins VREFA and VREFB Voltage Range at pins SENSEA and SENSEB RMS Output Current Operating Junction Temperature Switching Frequency -25 (pulsed tW < trr) (DC) Test Conditions VSA = VSB = VS VSA = VSB = VS; VSENSEA = VSENSEB -0.1 -6 -1 MIN 8 MAX 52 52 Unit V V VREFA, VREFB VSENSEA, VSENSEB IOUT Tj fsw 5 6 1 1.4 +125 100 V V V A °C KHz 2/22 L6227 THERMAL DATA Symbol Rth-j-pins Rth-j-case Rth-j-amb1 Rth-j-amb1 Rth-j-amb1 Rth-j-amb2 (1) (2) (3) (4) Description Maximum Thermal Resistance Junction-Pins Maximum Thermal Resistance Junction-Case Maximum Thermal Resistance Junction-Ambient 1 PowerDIP24 19 44 59 SO24 15 52 78 PowerSO36 2 36 16 63 Unit °C/W °C/W °C/W °C/W °C/W °C/W Maximum Thermal Resistance Junction-Ambient 2 Maximum Thermal Resistance Junction-Ambient 3 Maximum Thermal Resistance Junction-Ambient 4 Mounted on a multi-layer FR4 PCB with a dissipating copper surface on the bottom side of 6cm2 (with a thickness of 35µm). Mounted on a multi-layer FR4 PCB with a dissipating copper surface on the top side of 6cm2 (with a thickness of 35µm). Mounted on a multi-layer FR4 PCB with a dissipating copper surface on the top side of 6cm2 (with a thickness of 35µm), 16 via holes and a ground layer. Mounted on a multi-layer FR4 PCB without any heat sinking surface on the board. PIN CONNECTIONS (Top View) GND N.C. N.C. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 D02IN1347 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 GND N.C. N.C. VSB OUT2B N.C. VBOOT ENB VREFB IN2B IN1B SENSEB RCB N.C. OUT1B N.C. N.C. GND IN1A IN2A SENSEA RCA OUT1A GND GND OUT1B RCB SENSEB IN1B IN2B 1 2 3 4 5 6 7 8 9 10 11 12 D02IN1346 24 23 22 21 20 19 18 17 16 15 14 13 VREFA ENA VCP OUT2A VSA GND GND VSB OUT2B VBOOT ENB VREFB VSA OUT2A N.C. VCP ENA VREFA IN1A IN2A SENSEA RCA N.C. OUT1A N.C. N.C. GND PowerDIP24/SO24 PowerSO36 (5) (5) The slug is internally connected to pins 1,18,19 and 36 (GND pins). 3/22 L6227 PIN DESCRIPTION PACKAGE SO24/ PowerDIP24 PIN # 1 2 3 4 PowerSO36 PIN # 10 11 12 13 IN1A IN2A SENSEA RCA Logic input Logic input Power Supply RC Pin Bridge A Logic Input 1. Bridge A Logic Input 2. Bridge A Source Pin. This pin must be connected to Power Ground through a sensing power resistor. RC Network Pin. A parallel RC network connected between this pin and ground sets the Current Controller OFF-Time of the Bridge A. Bridge A Output 1. Signal Ground terminals. In Power DIP and SO packages, these pins are also used for heat dissipation toward the PCB. Bridge B Output 1. RC Network Pin. A parallel RC network connected between this pin and ground sets the Current Controller OFF-Time of the Bridge B. Bridge B Source Pin. This pin must be connected to Power Ground through a sensing power resistor. Bridge B Input 1 Bridge B Input 2 Bridge B Current Controller Reference Voltage. Do not leave this pin open or connect to GND. Name Type Function 5 6, 7, 18, 19 8 9 15 1, 18, 19, 36 22 24 OUT1A GND Power Output GND OUT1B RCB Power Output RC Pin 10 11 12 13 14 25 26 27 28 29 SENSEB IN1B IN2B VREFB ENB Power Supply Logic Input Logic Input Analog Input 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. Supply Voltage Power Output Power Supply Power Supply Power Output Output Bootstrap Voltage needed for driving the upper Power MOSFETs of both Bridge A and Bridge B. Bridge B Output 2. Bridge B Power Supply Voltage. It must be connected to the supply voltage together with pin VSA. Bridge A Power Supply Voltage. It must be connected to the supply voltage together with pin VSB. Bridge A Output 2. Charge Pump Oscillator Output. 15 16 17 20 21 22 30 32 33 4 5 7 VBOOT OUT2B VSB VSA OUT2A VCP 4/22 L6227 PIN DESCRIPTION (continued) 23 8 ENA 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. Analog Input Bridge A Current Controller Reference Voltage. Do not leave this pin open or connect to GND. 24 9 VREFA (6) Also connected at the output drain of the Over current and Thermal protection MOSFET. Therefore, it has to be driven putting in series a resistor with a value in the range of 2.2KΩ - 180KΩ, recommended 100KΩ. ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, Vs = 48V, unless otherwise specified) Symbol Parameter Test Conditions Min 5.8 5 All Bridges OFF; Tj = -25°C to 125°C (7) Typ 6.3 5.5 5 Max 6.8 6 10 Unit V V mA °C VSth(ON) Turn-on Threshold VSth(OFF) Turn-off Threshold IS Quiescent Supply Current Tj(OFF) Thermal Shutdown Temperature 165 Output DMOS Transistors RDS(ON) High-Side +Low-Side Switch ON Resistance Leakage Current Tj = 25 °C Tj =125 °C (7) IDSS EN = Low; OUT = VS EN = Low; OUT = GND Source Drain Diodes VSD trr tfr Forward ON Voltage Reverse Recovery Time Forward Recovery Time ISD = 1.4A, EN = LOW If = 1.4A 1.15 300 200 1.3 V ns ns -0.3 1.47 2.35 1.69 2.7 2 Ω Ω mA mA Logic Input VIL VIH IIL IIH Vth(ON) Vth(OFF) Vth(HYS) Low level logic input voltage High level logic input voltage Low Level Logic Input Current High Level Logic Input Current Turn-on Input Threshold Turn-off Input Threshold Input Threshold Hysteresis 0.8 0.25 GND Logic Input Voltage 7V Logic Input Voltage 1.8 1.3 0.5 -0.3 2 -10 10 2.0 0.8 7 V V µA µA V V V Switching Characteristics tD(on)EN Enable to out turn ON delay time (8) ILOAD =1.4A, Resistive Load 500 800 ns 5/22 L6227 ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25 °C, Vs = 48V, unless otherwise specified) Symbol tD(on)IN tRISE tD(off)EN tD(off)IN tFALL tdt fCP Parameter Input to out turn ON delay time Output rise time(8) Test Conditions ILOAD =1.4A, Resistive Load (dead time included) ILOAD =1.4A, Resistive Load 40 500 500 40 0.5 -25°C