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| CS3720 2A H-Bridge Driver Description DE SI GN CS3720 Features EW 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 .....................................................-40C to +150C Storage Temperature Range.......................................................-65C to +150C Lead Temperature Soldering Wave Solder (through hole styles only) ............10 sec. max, 260C peak Reflow (SMD styles only) .............60 sec. max above 183C, 230C peak Electrostatic Discharge (Human Body Model).............................................2kV Block Diagram RE CO MM EN DE D AR CH IV FO E R N Transient Protection Over Current Protection OUTPUT DRIVER + 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 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. s High Current (2A typ) Output s TTL compatible DIRECTION Control s Fault Protection Overvoltage Load Dump Protection to 74V Package Options 7 Lead Power SIP 2 ENABLE1 4 DIRECTION 6 COIL+ 8 Gnd 10 COIL- 12 VSS 14 ENABLE2 VSS VREF NO T Q1 Q3 Over Current Protection DE VI CE Overvoltage Protection COIL + COIL - 7 Lead TO-220 7 Lead D2PAK ENABLE1 ENABLE2 DRIVE CONTROL LOGIC DIRECTION OUTPUT DRIVER - Q4 Q2 1 2 3 4 5 6 7 1 ENABLE1 DIRECTION COIL+ Gnd VSS COIL- ENABLE2 1 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 December, 2001 - Rev. 5 1 CS3720 Electrical Characteristics: 5.5V VCC 17V; -40C TJ +150C; -40C TC +105C; -40C TA 105C; unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT s Output Stage Quiescent Current IOUT = 0mA; ENABLE1 = DIRECTION = High ENABLE2 = Low IOUT = 2A IOUT = 500mA IOUT = 0mA 3.0 10 mA Output Saturation Voltage Output Leakage Current Current Limit s Logic Control Functions High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current Turn on Delay Guaranteed by design Turn off Delay Guaranteed by design s Fault Protection Functions Overvoltage Shutdown 3.2 2.6 20 V V A A 2.0 0.8 10 -250 RLOAD = 30; Coil = 5mH; CLOAD = 15pF RLOAD = 30; Coil = 5mH; CLOAD = 15pF 50 5 50 5 V V A A s s IOUT = 500mA 18.0 21.5 V Package Lead Description PACKAGE LEAD# LEAD SYMBOL FUNCTION 15 Lead Power SIP 2 4 6 8 12 10 14 7 Lead TO-220 1 2 3 4 5 6 7 7 Lead D2PAK 1 2 3 4 5 6 7 ENABLE1 DIRECTION COIL+ Gnd VSS COILENABLE2 Enables output when held low and ENABLE 2 = High Determines the direction of current flow through COIL+ and COIL- as long as ENABLE1 = Low and ENABLE2 = High Positive Output of H bridge to coil Ground connection Supply voltage for IC Negative Output of H bridge to coil Enables output when held high and ENABLE 1 = Low Application Hints Motor Direction Control ENABLE1 ENABLE2 Low Low High X High High X Low DIRECTION High Low X X COIL+ High Low OFF OFF COILLow High OFF OFF 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. 2 Table 1. Logical Control Diagram CS3720 Application and Test Diagram VSS VSS VSS COIL + D1 D1 LLOAD 5mH RLOAD 30 CLOAD 0.1F CS3720 P I/O ENABLE1 ENABLE2 DIRECTION Gnd COIL - 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+ 0V 10% 17V 0V ENABLE1 = 0.4V 50% 0V 5V 50s Turnoff Delay COIL- 90% 50s Turnoff Delay 5V ENABLE2 50% DIRECTION COIL+ 0V 17V 10% 0V 17V 90% COIL- 0V 3 CS3720 Package Specification PACKAGE DIMENSIONS IN mm (INCHES) PACKAGE THERMAL DATA 7 Lead D2PAK (DPS)* Short-Leaded 1.68 (.066) 1.40 (.055) 10.31 (.406) 10.05 (.396) 1.40 (.055) 1.14 (.045) Thermal Data RJC typ RJA typ 7L 7L D2PAK TO-220 2.1 2.1 10-50* 50 7L Power SIP 2.1 C/W 35 C/W 8.53 (.336) 8.28 (.326) 14.71 (.579) 13.69 (.539) 2.79 (.110) 2.54 (.100) 1.98 (.078) 1.47 (.058) AR CH IV FO E R N TERMINAL 8 6.50 (.256) REF EW 0.91 (.036) 0.66 (.026) 1.27 (.050) REF .254 (.010) REF DE SI GN *Depending on thermal properties of substrate. RJA=RJC + RCA. 7 Lead TO-220 (T) Straight 7.75 (.305) REF 4.57 (.180) 4.31 (.170) 10.54 (.415) 9.78 (.385) 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) 3.96 (.156) 3.71 (.146) 14.99 (.590) 14.22 (.560) *ON SEMICONDUCTOR SHORT-LEADED FOOTPRINT RE CO MM EN DE D 20.02 (.788) 7 Lead Power SIP (M) Straight 14.22 (.560) 13.72 (.540) 0.94 (.037) 0.58 (.023) 1.40 (.055) 1.14 (.045) 0.64 (.025) 0.38 (.015) 7.75 (.305) 7.49 (.295) 0.56 (.022) 0.36 (.014) 17.50 (.689) 10.69 (.421) 2.92 (.115) 2.29 (.090) 1.1 (.043) 10.9 (.429) NO T 0.79 (.031) MAX. 2.54 (.100) 15.24 (.600) Part Number CS3720XT7 CS3720XTVA7 CS3720XTHA7 CS3720XM7 CS3720XDPS7 CS3720XDPSR7 DE VI CE Ordering Information 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) 4 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. (c) Semiconductor Components Industries, LLC, 2000 |
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