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| TA7291AP/AS(J)/AF TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA7291AP,TA7291AS(J),TA7291AF Full-Bridge Driver for DC Motors (driver for controlling the forward and reverse rotations) The TA7291AP/TA7291AS (J)/TA7291AF is a full-bridge driver to control the forward and reverse rotations. Each driver can select one of four modes: CW, CCW, stop, brake. The TA7291AP is designed to provide output currents of 1.0 A (typ.) and 2.0 A (peak). The TA7291AS (J)/TA7291AF is designed to provide output currents of 0.4 A (typ.) and 1.2 A (peak). There are two different power supply pins for each driver: one on the output side and the other on the control side of the driver. Also, there is the Vref pin on the output side. This pin is available for adjusting the voltage supplied to the motor. The input circuit of the driver is compatible with CMOS logic because it draws a small amount of input current. TA7291AP TA7291AS (J) Features * Wide range of operating voltage: VCC (opr.) = 4.5 V to 27 V : VS (opr.) = 4.5 V to 27 V : Vref (opr.) = 4.5 V to 27 V Vref must be VS. * * * * * Output current: AP type 1.0 A (typ.) 2.0 A (peak) : AS (J)/AF type 0.4 A (typ.) 1.2 A (peak) Thermal shutdown and overcurrent protection Flyback diodes Hysteresis for all inputs Standby mode available TA7291AF Weight HSIP10-P-2.54: 2.47 g (typ.) SIP9-P-2.54A: 0.92 g (typ.) HSOP16-P-300-1.00: 0.50 g (typ.) 1 2003-02-14 TA7291AP/AS(J)/AF Block Diagram VCC 7/2/11 4/8/5 8/6/15 VS Vref REG 2/7/4 OUT1 M Protection circuit (TSD) 10/3/13 OUT2 5/9/7 IN1 IN2 6/1/9 1/5/1 GND TA7291AP/TA7291AS (J)/TA7291AF Pin Function Symbol VCC VS Vref GND IN1 IN2 OUT1 OUT2 Pin No. AP 7 8 4 1 5 6 2 10 AS (J) 2 6 8 5 9 1 7 3 AF 11 15 5 1 7 9 4 13 Function Description Supply voltage pin for Logic Supply voltage pin for motor driver Supply voltage pin for control Ground pin Input pin Input pin Output pin Output pin AP type: Pin 3 and 9 are NC. AS (J) type: Pin 4 is NC. AF type: Pin 2, 3, 6, 8, 10, 12, 14, and 16 are NC. For F type, we recommend the fin be connected to ground. 2 2003-02-14 TA7291AP/AS(J)/AF Function Input IN1 0 1 0 1 IN2 0 0 1 1 OUT1 H L L Output OUT2 L H L Mode Stop CW/CCW CCW/CW Brake : High impedance Note: Inputs are all active high. Maximum Ratings (Ta = 25C) Characteristics Supply voltage Symbol VCC VCC (opr.) VS VS (opr.) Vref Vref (opr.) AP type AS (J)/AF type P type S(J)/AF type AP type Power dissipation AS (J) type AF type Operating temperature Storage temperature Topr Tstg PD IO (peak) Rating 30 27 30 27 30 27 2.0 1.2 1.0 0.4 12.5 0.95 1.4 -30 to 75 -55 to 150 (Note 1) (Note 2) (Note 3) C C W A Unit V Motor drive voltage V Reference voltage V Peak Output current Typ. IO (typ.) Note 1: Tc = 25C Note 2: No heat sink Note 3: When mounted on a PCB (PCB area: 60 mm 30 mm 1.6 mm, Cu area: 50% or more) Wide range of operating voltage: VCC (opr.) = 4.5 V to 27 V VS (opr.) = 4.5 V to 27 V Vref (opr.) = 4.5 V to 27 V Vref VS 3 2003-02-14 TA7291AP/AS(J)/AF Electrical Characteristics (Ta = 25C, VCC = 5 V, VS = 24 V) Characteristics Symbol ICC1-1 ICC1-2 ICC2-1 Supply current ICC2-2 ICC3-1 ICC3-2 Input operating voltage Input current Upper AP/AS (J)/ side AF type Lower side Saturation voltage AS (J)/AF type Upper side Lower side Upper side Lower side 1 (High) 2 (Low) VIN1 VIN2 IIN VSAT U-1 VSAT L-1 VSAT U-2 3 VSAT L-2 VSAT U-3 VSAT L-3 VSAT U-1' AS (J)/AF type Output voltage (upper side) AP type VSAT U-4' Upper I side L U Lower side Upper side Lower side Upper side Lower side 4 Test Circuit Test Condition Output OFF, CW/CCW mode Output OFF, CW/CCW mode, VCC = 24 V Output OFF, Stop mode Min 3/4 3/4 3/4 3/4 3/4 3/4 3.5 GND 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 10.4 3/4 10.2 3/4 3/4 Typ. 6.0 8.0 0 0 4.5 6.5 3/4 3/4 3 0.9 0.8 1.0 0.9 1.3 1.2 11.2 10.9 11.0 10.7 3/4 3/4 1.5 2.5 0.9 1.2 3/4 Max 11.0 13.0 50 50 8.0 10.0 5.5 0.8 10 1.2 1.2 1.35 Unit mA 1 Output OFF, Stop mode, VCC = 24 V Output OFF, Brake mode Output OFF, Brake mode, VCC = 24 V Tj = 25C VIN = 3.5 V, Sink mode Vref = VS, VOUT-VS measure IO = 0.2 A, CW/CCW mode Vref = VS, VOUT-GND measure IO = 0.2 A, CW/CCW mode Vref = VS, VOUT-VS measure IO = 0.4 A, CW/CCW mode Vref = VS, VOUT-GND measure IO = 0.4 A, CW/CCW mode Vref = VS, VOUT-VS measure IO = 1.0 A, CW/CCW mode Vref = VS, VOUT-GND measure IO = 1.0 A, CW / CCW mode Vref : 10 V, VOUT-GND measure IO = 0.2 A, CW / CCW mode Vref : 10 V, VOUT-GND measure IO = 0.4 A, CW/CCW mode Vref : 10 V, VOUT-GND measure IO = 0.5 A, CW/CCW mode Vref : 10 V, VOUT-GND measure IO = 1.0 A, CW/CCW mode VL = 30 V mA mA 2 V mA V 1.35 1.8 1.85 3/4 12.2 V 3/4 12.0 50 mA 50 3/4 3/4 V 3/4 3/4 40 mA AP type VSAT U-2' 3 VSAT U-3' Leakage current IL L VF U-1 VF U-2 5 VF L-1 VF L-2 Iref 2 VL = 30 V 3/4 3/4 3/4 3/4 Vref = 10 V, Source mode AS (J)/AF type Diode forward voltage AP type AS (J)/AF type AP type Reference current 3/4 3/4 3/4 3/4 3/4 4 2003-02-14 TA7291AP/AS(J)/AF Test Circuit 1 ICC1-1, ICC1-2, ICC2-1,ICC2-2, ICC3-1, ICC3-2 VS = 24 V 7/2/11 VIN1 VIN2 4/8/5 8/6/15 A SW 2 VIN (H) 3.5 V 6/1/9 1/5/1 GND 10/3/13 Note: The heat fin of the TA7291AF is connected to ground. Test Circuit 2 VIN1, VIN2, IIN, Iref VCC SW 1 TA7291AP/AS (J)/AF 5 V/24 V 5/9/7 2/7/4 VS A 10 V VS VCC 5V SW 1 VIN1 VIN2 A VIN SW 2 5 V (max) 0 V (min) 5/9/7 6/1/9 1/5/1 GND TA7291AP/AS (J)/AF 2/7/4 10/3/13 OUT1 OUT2 TA7291AP/TA7291AS (J)/TA7291AF Note: The heat fin of the TA7291AF is connected to ground. VS = 24 V SW 3 7/2/11 4/8/5 8/6/15 5 2003-02-14 Vref TA7291AP/AS(J)/AF Test Circuit 3. VSAT U-1, 2, 3 VSAT L-1, 2, 3 VSAT U-1', 2', 3', 4' SW 4 10 V V VS 8/6/15 OUT1 2/7/4 10/3/13 SW 3 OUT2 GND VCC 5V RL () 7/2/11 VIN1 4/8/5 Vref SW 2 VIN (H) 3.5 V VIN2 6/1/9 1/5/1 V Note 1: IOUT calibration is required to adjust specified values of test conditions by RL. (IOUT = 0.2 A/0.4 A/0.5 A/1.0 A) Note 2: The heat fin of the TA7291AF is connected to ground. Test Circuit 4. ILU, L VL = 30 V VS 8/6/15 OUT1 5/9/7 6/1/9 1/5/1 TA7291AP/AS (J)/AF 2/7/4 10/3/13 OUT2 VL 7/2/11 4/8/5 A VL A TA7291AP/TA7291AS (J)/TA7291AF Note: The heat fin of the TA7291AF is connected to ground. Test Circuit 5. VF U-1, 2 VF L-1, 2 7/2/11 4/8/5 VS 8/6/15 OUT1 2/7/4 10/3/13 SW 1 VU VL = 30 V V 5/9/7 6/1/9 TA7291AP/AS (J)/AF VU 1/5/1 OUT2 SW 2 V IL IU VS SW 1 5/9/7 TA7291AP/AS (J)/AF 6 VS = 24 V 2003-02-14 TA7291AP/AS(J)/AF TA7291AP 15 (1) Infinite heat sink PD - Ta (C/W) TA7291AP t - Rth Input pulse (1) Infinite heat sink (2) 80 cm2 2 mm Al heat sink (3) 25 cm2 2 mm Al heat sink (4) No heat sink (W) (1) (2) 80 cm 2 mm Al Heat sink (qHS = 6C/W) 2 PW t (s) (4) (3) PD 10 (2) (3) 15 cm2 2 mm Al Heat sink (qHS = 20C/W) (4) No heat sink qj-a = 65C/W Transient thermal resistance Rth Power dissipation 100 50 30 10 5 3 1 10-2 10-1 102 5 (3) (4) (2) (1) 0 0 50 100 150 200 1 10 103 Ambient temperature Ta (C) Pulse width t (s) TA7291AS (J) 2.0 PD - Ta 1000 TA7291AS (J) t - Rth (C/W) No heat sink qj-a = 130C/W 500 300 No heat sink (W) 1.6 Transient thermal resistance Rth PD 100 50 30 Input pulse 10 5 3 1.2 Power dissipation 0.8 PW t (s) 1 10 100 1000 0.4 0 0 25 50 75 100 125 150 175 1 0.1 Ambient temperature Ta (C) Pulse width t (s) TA7291AF 2.0 PD - Ta (1) When mounted on a PCB (PCB area: 60 mm 30 mm 1.6 mm, Cu area: 50% or more) TA7291AF t - Rth (C/W) (1) No heat sink (2) When mounted on a PCB (PCB area: 60 mm 30 mm 1.8 mm, Cu area: 50% or more) 200 (1) 100 (2) 50 30 Input pulse PW (W) 1.6 (1) 1.2 Power dissipation PD (2) No heat sink qj-a = 140C/W Transient thermal resistance Rth t (s) 0.8 (2) 0.4 0 0 25 50 75 100 125 150 175 10 1 10 100 1000 Ambient temperature Ta (C) Pulse width t (s) 7 2003-02-14 TA7291AP/AS(J)/AF TA7291AP VCE (SAT) - IOUT (Upper) 3.2 3.2 TA7291AP VCE (SAT) - IOUT (Lower) 2.4 2.4 (V) VCE (SAT) 1.6 VCE (SAT) 0.4 0.8 1.2 1.6 2.0 (V) 1.6 0.8 0.8 0 0 0 0 0.4 0.8 1.2 1.6 2.0 IOUT (A) IOUT (A) Vref - VOUT (H) Test circuit 12 V 5V VS = 12 V VCC = 5 V VS - VOUT (H) Test circuit VCC 5V Vref = 8.0 V VCC = 5.0 V VS 8V The heat fin of the TA7291AF is connected to ground. Output open 9 Resistor 40 W Resistor 10 W 8 9 10 7/2/11 8/6/15 Open VCC VS 5/9/7 2/7/4 IN1 OUT1 V 6/1/9 IN2 G Vref 1/5/1 4/8/5 7/2/11 8/6/15 Open VCC VS 5/9/7 2/7/4 IN1 OUT1 V 6/1/9 IN2 G Vref 1/5/1 4/8/5 10 W 40 W The heat fin of the TA7291AF is connected to ground. 12 Output open 10 10 (V) Resistor 40 W 6 Resistor 10 W 4 VOUT (H) VOUT (H) (V) 8 7 2 0 0 2 4 6 8 10 12 6 8 10 W 40 W 11 12 Vref (V) VS (V) 8 2003-02-14 TA7291AP/AS(J)/AF Notes * Power On/Off At power on, VCC must be applied simultaneously or before VS. At power off, VCC must be removed simultaneously or after VS. * Input Circuit A logic high on the VIN pin activates the input circuit as shown in the figure. When a voltage greater than or equal to VIN (high) VIN is applied to the pin, the circuit is active. When a voltage less than or equal to VIN (low) is applied to the pin or the pin is grounded, the circuit is inactive. When the pin is high, the input current IIN flows into the input circuit. So, be careful about the output impedance of the first stage. The input hysteresis is 0.7 V (typ.). At power on (VCC), set both input pins IN1 and IN2 to low. 10 kW VCC standby VIN 5/9/7 or 6/1/9 1 kW 4.5 kW 10 kW 5 kW TA7291AP/TA7291AS (J)/TA7291AF * Output Circuit Output high voltage * Operation based on the Vref voltage The Vref voltage is increased by twice the value of VBE (small signal) in the Vref circuit. Then, the voltage is applied to the base A of Q2 (power transistor 2). As a result, the voltage which is reduced by the value of VBE (Q2) appears on the VOUT pin. VOUT = Vref + 2VBEVBE (Q2) ~ Vref + 0.7 V * Vref pin The Vref pin must not be left open when unused. In this case, connect it via a protection resistor (3 kW or more) to the VS pin. Otherwise, it might cause oscillation. Vref must be VS. Q1 A Vref circuit Q2 1.3 kW 1/5/1 8/6/15 or 10/3/13 2/7/4 4/8/5 VOUT Vref 1/5/1 TA7291AP/TA7291AS (J)/TA7291AF Protection Features Overcurrent Protection Circuit The overcurrent protection circuit detects a current flowing through the upper power transistor. If the current exceeds a predetermined value (about 2.5 A), the circuit turns all the power transistors off. However, it does not always prevent overcurrent. If an output pin is shorted or grounded, the IC might be destroyed before operation of the overcurrent protection circuit. So, be sure to connect a resistor or fuse to the power supply (VS) line. (See "Application Circuit.") Thermal Shutdown Circuit If the chip temperature exceeds a predetermined limit (about 170C), the thermal shutdown circuit turns all the power transistors off. 9 2003-02-14 TA7291AP/AS(J)/AF Application Circuit R1 (Note 2) VS (Note 1) 10 mF VCC R2 (Note 3) 7/2/11 8/6/15 4/8/5 IN1 IN2 5/9/7 6/1/9 TA7291P/S/F 2/7/4 M 10/3/13 1/5/1 GND TA7291AP/TA7291AS (J)/TA7291AF Note 1: Select the optimum value for the capacitor by experiment. Note 2: Insert the current limiting resistor R1 to protect the IC from overcurrent. Note 3: When VS = Vref, insert the resistor R2 (3 kW or more) to protect the Vref pin from being damaged by a surge. Note 4: The IC may be destroyed due to short circuit between output pins, an output pin and VCC, or an output pin and ground. Design the output line, VCC (VM, VS, VEE) lines and the ground line with great care. Note * * Shoot-through current occurs when the mode is switched. The driver must enter the stop mode for approximately 100 ms before switching between CW and CCW modes, or CW/CCW and brake modes. The proper IC functions are not guaranteed at power on/off. Before using the IC, check that any IC malfunctions that are possible at power on/off will not cause a problem in the IC application. 10 2003-02-14 TA7291AP/AS(J)/AF Package Dimensions Weight: 2.47 g (typ.) 11 2003-02-14 TA7291AP/AS(J)/AF Package Dimensions Weight: 0.92 g (typ.) 12 2003-02-14 TA7291AP/AS(J)/AF Package Dimensions Weight: 0.50 g (typ.) 13 2003-02-14 TA7291AP/AS(J)/AF RESTRICTIONS ON PRODUCT USE 000707EBA * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice. 14 2003-02-14 |
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