CS3720 CS3720 2A H-Bridge Driver Description The CS3720 is high current (2A typ) bidirectional DC motor driver. The H-bridge output stage consists of two pairs of power NPN transistors, each with a VSAT=2.3V at IOUT=2A (typ). The three TTL compatible inputs, ENABLE1, ENABLE2, and DIRECTION control the output stage. When ENABLE1 is low and Features ENABLE2 is high, DIRECTION determines which way current flows through the motor coil. Any other combination of ENABLE settings disables the outputs. The CS3720 is protected against overvoltage fault conditions. If a fault condition is detected, the IC shuts down. ■ High Current (2A typ) Output ■ TTL compatible DIRECTION Control ■ Fault Protection Overvoltage Load Dump Protection to 74V Absolute Maximum Ratings DC Input Voltage ..................................................................................-0.3 to 28V Transient Input Voltage ...................................................................... -0.3 to 74V Internal Power Dissipation......................................................Internally limited Junction Temperature Range .....................................................-40°C to +150°C Storage Temperature Range.......................................................-65°C to +150°C Lead Temperature Soldering Wave Solder (through hole styles only) ............10 sec. max, 260°C peak Reflow (SMD styles only) .............60 sec. max above 183°C, 230°C peak Electrostatic Discharge (Human Body Model).............................................2kV Package Options 7 Lead Power SIP Block Diagram 2 ENABLE1 4 DIRECTION 6 COIL+ 8 Gnd 10 COIL– 12 VSS 14 ENABLE2 VSS VREF Transient Protection DRIVE ENABLE2 CONTROL DIRECTION LOGIC Over Current Protection Over Current Protection Overvoltage Protection ENABLE1 Q3 Q1 OUTPUT DRIVER + COIL + 7 Lead D2PAK 7 Lead TO-220 COIL - OUTPUT DRIVER – Q4 1 Q2 1 1 2 3 4 5 6 7 ENABLE1 DIRECTION COIL+ Gnd VSS COIL– ENABLE2 Gnd ON Semiconductor 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885–3600 Fax: (401)885–5786 N. American Technical Support: 800-282-9855 Web Site: www.cherry–semi.com May, 1999 - Rev. 4 1 CS3720 Electrical Characteristics: 5.5V ≤ VCC ≤ 17V; –40°C ≤ TJ ≤ +150°C; –40°C ≤ TC ≤ +105°C; –40°C ≤ TA ≤ 105°C; unless otherwise specified. PARAMETER ■ TEST CONDITIONS MIN TYP Quiescent Current IOUT = 0mA; ENABLE1 = DIRECTION = High ENABLE2 = Low 10 mA Output Saturation Voltage IOUT = 2A IOUT = 500mA 3.2 2.6 V V Output Leakage Current IOUT = 0mA 20 µA 3.0 A Logic Control Functions High Level Input Voltage 2.0 V Low Level Input Voltage 0.8 V High Level Input Current 10 µA Low Level Input Current ■ UNIT Output Stage Current Limit ■ MAX -250 µA Turn on Delay Guaranteed by design RLOAD = 30Ω; Coil = 5mH; CLOAD = 15pF 5 Turn off Delay Guaranteed by design RLOAD = 30Ω; Coil = 5mH; CLOAD = 15pF 5 50 µs 50 µs 21.5 V Fault Protection Functions IOUT = 500mA Overvoltage Shutdown 18.0 Package Lead Description PACKAGE LEAD# LEAD SYMBOL FUNCTION 15 Lead Power SIP 7 Lead TO-220 7 Lead D2PAK 2 1 1 ENABLE1 Enables output when held low and ENABLE 2 = High 4 2 2 DIRECTION Determines the direction of current flow through COIL+ and COIL- as long as ENABLE1 = Low and ENABLE2 = High 6 3 3 COIL+ Positive Output of H bridge to coil 8 4 4 Gnd Ground connection 12 5 5 VSS Supply voltage for IC 10 6 6 COIL- Negative Output of H bridge to coil 14 7 7 ENABLE2 Enables output when held high and ENABLE 1 = Low Application Hints Motor Direction Control ENABLE1 ENABLE2 Current flow through the two outputs COIL+ and COILis controlled by the combined settings of ENABLE1, ENABLE2 and DIRECTION (Table 1). The outputs will be active only when ENABLE1 is low and ENABLE2 is high. When DIRECTION is high, current flows out of COIL+ and into COIL-. When DIRECTION is low, current flows out of COIL- and into COIL+. For any other combination of ENABLE settings, the outputs are off. DIRECTION COIL+ COIL- Low High High High Low Low High Low Low High High X X OFF OFF X Low X OFF OFF Table 1. Logical Control Diagram 2 CS3720 Application and Test Diagram VSS VSS VSS COIL + D1 D1 LLOAD 5mH CS3720 µP I/O ENABLE1 ENABLE2 DIRECTION Gnd RLOAD 30Ω COIL - CLOAD 0.1µF D1 D1 D1 = IN4001 or equivalent Note: A heatsink is required for 2A operation. Figure 1. Delay Times for ENABLE and COIL ENABLE2 = 2.4V 5V ENABLE1 DIRECTION 50% 50% 0V 5V 0V 17V COIL+ 10% 0V COIL– 17V 90% 0V 5V ENABLE2 50µs Turnoff Delay 50µs Turnoff Delay ENABLE1 = 0.4V 50% 50% 0V 5V DIRECTION COIL+ 0V 17V 10% 0V 17V COIL– 90% 0V 3 CS3720 Package Specification PACKAGE DIMENSIONS IN mm (INCHES) PACKAGE THERMAL DATA Thermal Data RΘJC typ 7 Lead D2PAK (DPS)* Short-Leaded 1.40 (.055) 1.14 (.045) 10.31 (.406) 10.05 (.396) 1.68 (.066) 1.40 (.055) RΘJA typ 7L 7L D2PAK TO-220 2.1 2.1 10-50* 7L Power SIP 2.1 °C/W 50 35 °C/W *Depending on thermal properties of substrate. RΘJA=RΘJC + RΘCA. 8.53 (.336) 8.28 (.326) 2.79 (.110) 2.54 (.100) 14.71 (.579) 13.69 (.539) 7 Lead TO-220 (T) Straight 1.98 (.078) 1.47 (.058) 0.91 (.036) 0.66 (.026) .254 (.010) REF 1.27 (.050) REF TERMINAL 8 6.50 (.256) REF 10.54 (.415) 9.78 (.385) 4.57 (.180) 4.31 (.170) 7.75 (.305) REF 4.83 (.190) 4.06 (.160) 1.40 (.055) 1.14 (.045) 2.87 (.113) 2.62 (.103) 0.10 (.004) 0.00 (.000) 6.55 (.258) 5.94 (.234) 14.99 (.590) 14.22 (.560) 3.96 (.156) 3.71 (.146) *ON SEMICONDUCTOR SHORT-LEADED FOOTPRINT 14.22 (.560) 13.72 (.540) 7 Lead Power SIP (M) Straight 20.02 (.788) 0.94 (.037) 0.58 (.023) 1.40 (.055) 1.14 (.045) 0.64 (.025) 0.38 (.015) 0.56 (.022) 0.36 (.014) 17.50 (.689) 7.75 (.305) 7.49 (.295) 10.69 (.421) 1.1 (.043) 2.92 (.115) 2.29 (.090) 10.9 (.429) 0.79 (.031) MAX. 2.54 (.100) 15.24 (.600) Ordering Information Part Number CS3720XT7 CS3720XTVA7 CS3720XTHA7 CS3720XM7 CS3720XDPS7 CS3720XDPSR7 Description 7 Lead TO-220 Straight 7 Lead TO-220 Vertical 7 Lead TO-220 Horizontal 7 Lead Power SIP Straight 7 Lead D2PAK Short-Leaded 7 Lead D2PAK Short-Leaded (tape & reel) ON Semiconductor and the ON Logo are trademarks of Semiconductor Components Industries, LLC (SCILLC). ON Semiconductor reserves the right to make changes without further notice to any products herein. For additional information and the latest available information, please contact your local ON Semiconductor representative. 4 © Semiconductor Components Industries, LLC, 2000