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) · Thermal shutdown and overcurrent protection · Flyback diodes · Hysteresis for all inputs · Standby mode available : AS (J)/AF type 0.4 A (typ.) 1.2 A (peak) 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 Vref 7/2/11 4/8/5 8/6/15 REG VS OUT1 2/7/4 M Protection circuit (TSD) 5/9/7 10/3/13 OUT2 6/1/9 1/5/1 GND IN1 TA7291AP/TA7291AS (J)/TA7291AF IN2 Pin Function Symbol Pin No. Function Description AP AS (J) AF VCC 7 2 11 Supply voltage pin for Logic VS 8 6 15 Supply voltage pin for motor driver Vref 4 8 5 Supply voltage pin for control GND 1 5 1 Ground pin IN1 5 9 7 Input pin IN2 6 1 9 Input pin OUT1 2 7 4 Output pin OUT2 10 3 13 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 Output Mode IN1 IN2 OUT1 OUT2 0 0 ∞ ∞ Stop 1 0 H L CW/CCW 0 1 L H CCW/CW 1 1 L L Brake ∞: High impedance Note: Inputs are all active high. Maximum Ratings (Ta = 25°C) Characteristics Supply voltage Motor drive voltage Reference voltage Peak Output current Typ. AP type AS (J)/AF type ＡP type ＡS(J)/AF type Symbol Rating VCC 30 VCC (opr.) 27 VS 30 VS (opr.) 27 Vref 30 Vref (opr.) 27 AS (J) type V V V 2.0 IO (peak) 1.2 A 1.0 IO (typ.) 0.4 AP type Power dissipation Unit PD AF type 12.5 (Note 1) 0.95 (Note 2) 1.4 (Note 3) W Operating temperature Topr −30 to 75 °C Storage temperature Tstg −55 to 150 °C Note 1: Tc = 25°C 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 = 25°C, VCC = 5 V, VS = 24 V) Characteristics Symbol Test Circuit Input operating voltage 6.0 11.0 ICC1-2 Output OFF, CW/CCW mode, VCC = 24 V ¾ 8.0 13.0 Output OFF, Stop mode ¾ 0 50 Output OFF, Stop mode, VCC = 24 V ¾ 0 50 ICC3-1 Output OFF, Brake mode ¾ 4.5 8.0 ICC3-2 Output OFF, Brake mode, VCC = 24 V ¾ 6.5 10.0 3.5 ¾ 5.5 GND ¾ 0.8 1 (High) VIN1 2 (Low) VIN2 1 2 VIN = 3.5 V, Sink mode ¾ 3 10 VSAT U-1 ¾ 0.9 1.2 side VSAT L-1 Vref = VS, VOUT-GND measure IO = 0.2 A, CW/CCW mode ¾ 0.8 1.2 Upper side VSAT U-2 Vref = VS, VOUT-VS measure IO = 0.4 A, CW/CCW mode ¾ 1.0 1.35 Lower side VSAT L-2 Vref = VS, VOUT-GND measure IO = 0.4 A, CW/CCW mode ¾ 0.9 1.35 Upper side VSAT U-3 Vref = VS, VOUT-VS measure IO = 1.0 A, CW/CCW mode ¾ 1.3 1.8 Lower side VSAT L-3 Vref = VS, VOUT-GND measure IO = 1.0 A, CW / CCW mode ¾ 1.2 1.85 VSAT U-1’ Vref : 10 V, VOUT-GND measure IO = 0.2 A, CW / CCW mode ¾ 11.2 ¾ VSAT U-2’ Vref : 10 V, VOUT-GND measure IO = 0.4 A, CW/CCW mode 10.4 10.9 12.2 VSAT U-3’ Vref : 10 V, VOUT-GND measure IO = 0.5 A, CW/CCW mode ¾ 11.0 ¾ VSAT U-4’ Vref : 10 V, VOUT-GND measure IO = 1.0 A, CW/CCW mode 10.2 10.7 12.0 ¾ ¾ 50 3 AS (J)/AF type Output voltage (upper side) 3 AP type Leakage current Diode forward voltage Upper I side L U VL = 30 V IL L AS (J)/AF type Upper side VF U-1 AP type Lower side VF U-2 AS (J)/AF type Upper side AP type Lower side mA mA mA V mA V mA ¾ ¾ 50 ¾ ¾ 1.5 ¾ VL = 30 V ¾ ¾ 2.5 ¾ VF L-1 ¾ ¾ 0.9 ¾ VF L-2 ¾ ¾ 1.2 ¾ ¾ ¾ 40 5 Iref Unit V 4 Lower side Reference current Tj = 25°C Vref = VS, VOUT-VS measure IO = 0.2 A, CW/CCW mode IIN Upper AP/AS (J)/ side AF type Lower AP type Max ¾ ICC2-2 AS (J)/AF type Typ. Output OFF, CW/CCW mode Input current Saturation voltage Min ICC1-1 ICC2-1 Supply current Test Condition 2 V Vref = 10 V, Source mode 4 mA 2003-02-14 TA7291AP/AS(J)/AF Test Circuit 1 VIN2 5/9/7 TA7291AP/AS (J)/AF 6/1/9 3.5 V VIN (H) SW 2 VIN1 8/6/15 2/7/4 A 10/3/13 5 V/24 V SW 1 4/8/5 VCC 7/2/11 VS = 24 V VS ICC1-1, ICC1-2, ICC2-1,ICC2-2, ICC3-1, ICC3-2 1/5/1 GND Note: The heat fin of the TA7291AF is connected to ground. Test Circuit 2 VIN1, VIN2, IIN, Iref 7/2/11 4/8/5 8/6/15 SW 1 VIN1 VIN2 VIN A SW 2 5/9/7 TA7291AP/AS (J)/AF 6/1/9 2/7/4 10/3/13 1/5/1 5 V (max) 0 V (min) OUT1 10 V Vref VS = 24 V SW 3 5V VCC VS A OUT2 GND TA7291AP/TA7291AS (J)/TA7291AF Note: The heat fin of the TA7291AF is connected to ground. 5 2003-02-14 TA7291AP/AS(J)/AF Test Circuit 3. VSAT U-1’, 2’, 3’, 4’ SW 4 10 V VIN2 5/9/7 TA7291AP/AS (J)/AF 6/1/9 VS 8/6/15 OUT1 2/7/4 10/3/13 SW 3 OUT2 1/5/1 3.5 V VIN (H) SW 2 VIN1 Vref VS SW 1 4/8/5 RL (注) 7/2/11 V VS = 24 V 5V VSAT L-1, 2, 3 VCC VSAT U-1, 2, 3 V GND 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. 4/8/5 VS 8/6/15 A VL 7/2/11 OUT1 TA7291AP/AS (J)/AF 6/1/9 10/3/13 OUT2 A VL 1/5/1 2/7/4 VL = 30 V 5/9/7 VL = 30 V ILU, L TA7291AP/TA7291AS (J)/TA7291AF Note: The heat fin of the TA7291AF is connected to ground. Test Circuit 5. TA7291AP/AS (J)/AF 6/1/9 VS 8/6/15 OUT1 2/7/4 VU 5/9/7 4/8/5 V VU 7/2/11 IU VF L-1, 2 IL VF U-1, 2 V SW 1 10/3/13 1/5/1 OUT2 6 SW 2 2003-02-14 TA7291AP/AS(J)/AF TA7291AP TA7291AP PD – Ta t – Rth (°C/W) 15 (1) Infinite heat sink 2 (2) 80 cm ´ 2 mm Al Transient thermal resistance Rth Power dissipation PD (W) (1) Heat sink (qHS = 6°C/W) 10 (3) 15 cm2 ´ 2 mm Al Heat sink (qHS = 20°C/W) (2) (4) No heat sink qj-a = 65°C/W 5 (3) (4) 0 0 50 100 150 (1) Infinite heat sink 100 (4) 50 30 (1) 5 3 10-1 1 t 103 (s) t – Rth 1000 (°C/W) qj-a = 130°C/W 1.6 Transient thermal resistance Rth (W) 102 10 TA7291AS (J) PD – Ta No heat sink PD (3) (2) 10 Pulse width 2.0 Power dissipation t (s) (4) No heat sink Ambient temperature Ta (°C) TA7291AS (J) PW (3) 25 cm2 ´ 2 mm Al heat sink 1 10-2 200 Input pulse (2) 80 cm2 ´ 2 mm Al heat sink 1.2 0.8 0.4 0 0 25 50 75 100 125 150 No heat sink 500 300 100 50 30 Input pulse 10 PW 5 3 t (s) 1 0.1 175 1 Ambient temperature Ta (°C) TA7291AF 10 Pulse width 100 t 1000 (s) TA7291AF PD – Ta t – Rth (1) (°C/W) 1.6 (1) When mounted on a PCB (PCB area: 60 mm ´ 30 mm ´ 1.6 mm, Cu area: 50% or more) (2) No heat sink qj-a = 140°C/W Transient thermal resistance Rth Power dissipation PD (W) 2.0 1.2 0.8 (2) 0.4 0 0 25 50 75 100 125 150 (1) No heat sink Ambient temperature Ta (°C) mm, Cu area: 50% or more) t (s) 200 (1) 100 (2) 50 30 10 Pulse width 7 PW (PCB area: 60 mm ´ 30 mm ´ 1.8 10 1 175 Input pulse (2) When mounted on a PCB 100 t 1000 (s) 2003-02-14 TA7291AP/AS(J)/AF TA7291AP VCE (SAT) – IOUT (Upper) TA7291AP VCE (SAT) – IOUT (Lower) 2.4 2.4 VCE (SAT) VCE (SAT) (V) 3.2 (V) 3.2 1.6 0.8 1.6 0.8 0 0 0.4 0.8 1.2 IOUT 1.6 0 0 2.0 0.4 0.8 (A) IOUT Vref – VOUT (H) VS 5V VCC 12 V Vref = 8.0 V VCC = 5.0 V 10 W 40 W 8V 10 W 40 W 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 The heat fin of the TA7291AF is connected to ground. 10 12 The heat fin of the TA7291AF is connected to ground. Output open Output open Resistor 40 W (V) Resistor 40 W VOUT (H) VOUT (H) (V) 9 8 Resistor 10 W 6 2.0 (A) Test circuit VS = 12 V VCC = 5 V 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 1.6 VS – VOUT (H) Test circuit 5V 1.2 4 Resistor 10 W 8 7 2 0 0 2 4 6 Vref 8 10 6 12 (V) 8 9 10 VS 8 11 12 (V) 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 1 kW 4.5 kW 5/9/7 1.3 kW VIN 10 kW VCC standby 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. or 6/1/9 10 kW · 5 kW 1/5/1 TA7291AP/TA7291AS (J)/TA7291AF · Output Circuit 8/6/15 Output high voltage Q1 · 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 + 2VBE－VBE (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. A Q2 Vref circuit or 10/3/13 2/7/4 VOUT 4/8/5 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 170°C), the thermal shutdown circuit turns all the power transistors off. 9 2003-02-14 TA7291AP/AS(J)/AF Application Circuit R1 (Note 2) VCC R2 (Note 3) 10 mF (Note 1) 7/2/11 IN1 5/9/7 IN2 6/1/9 8/6/15 VS 4/8/5 2/7/4 TA7291P/S/F 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