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TB6549F/P
Preliminary
Toshiba Bi-CMOS Integrated Circuit Silicon Monolithic
TB6549F,TB6549P
Full-Bridge Driver IC for DC motor
TB6549F/P is a full-bridge driver IC for DC motor which uses LDMOS for output transistors. High efficient drive is possible by MOS process with low ON-resistor and PWM drive system. Four modes such as CW, CCW, short brake, and stop can be chosen by IN1 and IN2.
TB6549F
Features
* * * * * * * * * Power supply voltage: 30 V (max) Output current: 3.5 A (max) Low ON resistor: 0.5 (typ.) Capable of PWM controlling Standby system CW/CCW/short brake/stop function modes. Built-in overcurrent protection Built-in thermal shutdown circuit Package: HSOP-20/DIP-16
TB6549P
Pin Assigument
HSOP20-P-450-1.00 N.C. CcpA CcpB CcpC N.C. S-GND (Fin) N.C. IN1 IN2 N.C. OUT1 VCC N.C. Vreg SB N.C. S-GND (Fin) N.C. PWM N.C. OUT2 P-GND IN2 OUT1 S-GND S-GND IN1 CcpA CcpB CcpC
Weight HSOP20-P-450-1.00: 0.79 g (typ.) DIP16-P-300-2.54A: 1.11 g (typ.)
DIP16-P-300-2.54A VCC Vreg SB S-GND S-GND PWM OUT2 P-GND
Note: This product has a MOS structure and is sensitive to electrostatic discharge. When handling this product, ensure that the environment is protected against electrostatic discharge by using an earth strap, a conductive mat and an ionizer. Ensure also that the ambient temperature and relative humidity are maintained at reasonable levels.
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TB6549F/P
Block Diagram
Vreg SB PWM OUT2 VCC OUT1
5V
Control logic OSC Overcurrent detecting circuit TSD
Charge pump circuit
CcpA
CcpB
CcpC
IN1 IN2
S-GND
P-GND
Pin Functions
Pin No. Pin Name F 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 FIN P 1 2 3 6 7 8 9 10 11 14 15 16 4, 5, 12, 13 (NC) CcpA CcpB CcpC (NC) (NC) IN1 IN2 (NC) OUT1 P-GND OUT2 (NC) PWM (NC) (NC) SB Vreg (NC) VCC S-GND No Connection Functional Description Remarks
Capacitor connection pin for charge pump A Connect a capacitor for charge pump Capacitor connection pin for charge pump B Connect a capacitor for charge pump Capacitor connection pin for charge pump C Connect a capacitor for charge pump No Connection No Connection Control signal input 1 Control signal input 2 No Connection Output pin 1 Power GND Output pin 2 No Connection PWM control signal input pin No Connection No Connection Standby pin 5 V output pin No Connection Power supply input pin GND pin VCC (ope) = 10 to 27 V H: Start, L: Standby Connect a capacitor to S-GND Input 0/5-V signal Input 0/5-V signal Connect to motor coil pin Connect to motor coil pin Input 0/5-V PWM signal
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TB6549F/P
Maximum Ratings (Ta = 25C)
Characteristics Supply voltage Symbol VCC IO (Peak) IO (Ave) F Power dissipation P Operating temperature Storage temperature Topr Tstg PD Rating 30 3.5 (Note 1) 2.0 2.5 (Note 2) W 2.5 (Note 3) -20 to 85 -55 to 150 C C Unit V
Output current
A
Note 1: The maximum ratings must be observed strictly. Make sure that all the characteristics listed above never exceed the maximum ratings. Note 2: This value is obtained by 115 x 75 x 1.6 mm PCB mounting occupied 30% of copper area. Note 3: This value is obtained by 50 x 50 x 1.6 mm PCB mounting occupied 50% of copper area.
Operating Range (Ta = 25C)
Characteristics Supply voltage PWM frequency Symbol VCC fCLK Rating 10 to 27 100 Unit V kHz
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TB6549F/P
Electrical Characteristics (VCC = 24 V, Ta = 25C)
Characteristics Symbol ICC1 Supply current ICC2 ICC3 ICC4 Input voltage Hysteresis voltage Input current VINH VINL Control circuit VIN (HYS) IINH IINL Input voltage Hysteresis voltage PWM input circuit Input current PWM frequency Minimum clock pulse width Input voltage Hysteresis voltage Input current VPWMH VPWML 3 3 1 (Not tested) VIN = 5 V VIN = 0 V 2 1 Test Circuit Test Condition Stop mode CW/CCW mode Short break mode (Standby mode) Min 2 2 (Not tested) VPWM = 5 V VPWM = 0 V Duty = 50% 3 tw(PWM) VINSH VINSL Standby circuit VIN (HYS) IINSH IINSL Output ON resistance Ron (U + L) IL (U) IL (L) Diode forward voltage Internal reference voltage Overcurrent detection offset time Charge pump rising time Thermal shutdown circuit operating temperature VF (U) VF (L) Vreg ISD (OFF) tONG TSD 4 7 6 4 1 (Not tested) VIN = 5 V VIN = 0 V Io = 0.2 A Io = 1.5 A VCC = 30 V VCC = 30 V Io = 1.5 A Io = 1.5 A No load (Not tested) C1 = 0.22 F, C2 = 0.01 F (Note 2) (Not tested) 4.5 (Note 1) 2 2 2 Typ. 4 6 4 1 0.2 50 0.2 50 0.2 50 1.0 1.0 1.3 1.3 5 50 1 160 Max 8 10 8 2 5.5 0.8 75 5 5.5 0.8 75 5 100 5.5 0.8 75 5 1.75 1.75 150 10 1.7 V 1.7 5.5 3 V s ms C A A V kHz s A V A V mA Unit
VPWM(HYS)
IPWMH IPWML
fPWM
Output leakage current
5
Note 1: Include the current in the circuit. Note 2: C1 is a capacitor between CcpA and GND. C2 is a capacitor between CcpB and CcpC.
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TB6549F/P
Component Description
1. Control Input/PWM Input Circuit
VDD IN1 (IN2, PWM) 100 k VDD
*
The input signals are shown below. Input at the CMOS and TTL levels can be provided. Note that the input signals have a hysteresis of 0.2 V (typ.). VINH: 2 to Vreg V VINL: GND to 0.8 V The PWM input frequency should be 100 kHz or less.
*
Input/Output Function
Input IN1 H IN2 H SB H PWM H L H L H H L H H L H L H L L H L H H/L H/L L L L L Short brake Stop OFF (high impedance) OFF (high impedance) L H L L Short brake CCW/CW L H CW/CCW OUT1 L OUT2 L Output Mode Short brake
Standby
*
PWM control function Motor speed can be controlled by inputting the 0/5-V PWM signal to the PWM pin. When PWM control is provided, normal operation and short brake operation are repeated. If the upper and lower power transistors in the output circuit were ON at the same time, a penetrating current would be produced. To prevent this current from being produced, a dead time of 300 ns (design target value) is provided in the IC when either of the transistors changes from ON to OFF, or vice versa. Therefore, PWM control by synchronous rectification is enabled without an OFF time being inserted by external input. Note that a dead time is also provided in the IC at the time of transition between CW and CCW or between CW (CCW) and short brake mode, thereby eliminating the need for an OFF time.
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TB6549F/P
VCC VCC VCC
OUT1
M
OUT1
M
OUT1
M
GND PWM ON t1 PWM ON OFF t2 = 300 ns (typ.) VCC
GND PWM OFF t3 VCC
GND
OUT1
M
OUT1
M
GND PWM OFF ON t4 = 300 ns (typ.) PWM ON t5 VCC Output Voltage Waveform (OUT1) t1 t3 t5
GND
GND t2 t4
Note: Please set the pin PWM to High when PWM control function is not used.
2. Standby Circuit
VDD VDD
SB 100 k
* *
All circuits are turned off except the standby circuit and the charge pump circuit under the standby condition. Input voltage range is shown below. Input at CMOS and TTL level is possible. Input signal has 0.2-V (typ.) hysteresis. VINSH: 2 to Vreg V VINSL: GND to 0.8 V Please avoid controlling the output by inputting PWM signal to the standby pin. The output signal becomes unstable and it may cause the destruction of the IC. The charge pump circuit is turned On/Off by the switch of the input signal from the standby pin. If the switching cycle is shorter than 50 ms, the charge pump circuit will not operate with precise timing. Therefore, switching cycle of the standby pin should be longer than 50 ms. When the Standby condition is changed to the Operation Mode, set IN1 and IN2 to Low level (Stop Mode) at first. Then switch IN1 and IN2 to High level when the charge pump circuit reaches the stable condition, VcpA is about VCC + 5 V.
* *
*
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TB6549F/P
3. Internal Constant-Voltage (5 V) Circuit
VCC VCC
Vreg
* * *
This IC includes a 5-V power supply for control circuit. A capacitor for prevention of oscillation should be connected to S-GND associated with the pin Vreg. No other loads should be connected to pin Vreg. This IC has a power monitoring function and turns the output OFF when Vreg goes down to 3.0 V (design target value) or less. With a hysteresis of 0.3 V (design target value), the output are turned ON when Vreg reaches 3.3 V (design target value) again .
4. Charge Pump Circuit
VCC CcpA
CcpB
CcpC
*
This IC has a charge pump circuit for driving the gate for the upper power transistor in the output circuit. A voltage of VCC + 5 V (typ.) is generated by connecting an external capacitor to this IC. It takes about 2 ms to boost VCPA up VCC + 5 V (typ.) after the switch of the input signal from the standby pin. (while CcpA = 0.22 F, and CcpB and CcpC are connected through 0.01 F). The proper capacitance of the external capacitor varies depending on the VCC value. Thus, determine the constant by referring to the following data. The value of the capacitor between CcpB and CcpC should be such that, while the motor is being driven, the voltage on the CcpA pin will be kept constant, typically at VCC + 5 V. (If a reduced VCC level causes the voltage on CcpA to start to fall, please adjust this capacitance value accordingly.)
VCC 10 V~15 V 15 V~27 V Between CcpB and CcpC 0.01 F~0.047 F 0.01 F Between CcpA and GND 0.22 F 0.22 F
*
*
Reference oscillation is performed by using the internal capacitor.
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TB6549F/P
5. Output Circuit
VCC OUT1 (OUT2) P-GND
* * *
This IC uses Nch MOS transistors as the upper and lower transistors in the output circuit. As output Ron is 1 (sum for the upper and lower parts/typ.), this IC is a device of the low Ron type. The switching characteristics of the output transistors are shown below.
PWM Input
tpLH
tpHL 90 90 50 10
Output Voltage (OUT1/OUT2) 10
50
tr
tf

Item tpLH tpHL tr tf Typical Value 350 800 60 100 ns Unit

tpLH (350 ns) PWM input tpLH (800 ns)
Output voltage tr (60 ns)
tf
(100 ns)
*: OUT 1, OUT 2; open
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TB6549F/P
6. VCC Power Supply Section
* * * The VCC power supply delivers a voltage to the output circuit, charge pump circuit, and internal 5-V circuit. The operating voltage range is shown below. VCC (opr.) = 10 to 27 V This IC has a power monitoring function for preventing an output malfunction on power-up. However, Toshiba recommends that IN1, IN2, and SB be set to the Low level at power-on.
7. GND Sections
* This IC includes two separate GND sections: S-GND for controlling and P-GND for outputting. Be sure to short- circuit these two GNDs as close to TB6549 as possible.
8. Power Monitoring Circuit
* * This circuit turns the output OFF when Vreg becomes 3.0 V (design target value) or less. At this time, VCC = 4.6 V (typ.) With a hysteresis of 0.3 V (design target value), the output turns back ON when Vreg exceeds 3.3 V (design target value) after this circuit starts operating.
9. Thermal Shutdown (TSD) Circuit
This IC includes a thermal shutdown circuit which turns the output OFF when the junction temperature (Tj) exceeds 160C (typ.). The output turns back ON automatically. The thermal hysteresis is 20C. TSD = 160C (design target value) TSD = 20C (design target value)
10. Overcurrent Detection (ISD) Circuit
This IC includes a circuit which detects a current flowing through the output power transistors. The current limit is set to 5 A (typ.). The circuit detects a current flowing through each of the four output power transistors. If the current in any one output power transistor exceeds the set limit, this circuit turns all the outputs OFF. This circuit includes a timer which causes the outputs to be OFF for 50 s (typ.) after detection of an overcurrent and then turn back ON automatically. If the overcurrent continues to flow, this ON-OFF operation is repeated. Note that to prevent a malfunction due to a glitch, an insensitive period of 10 s (typ.) is provided.
ILIM Output Current 0 50 s (typ.) 10 s (typ.) Insensitive period 10 s (typ.) 50 s (typ.)
The set limit is 5 A (typ.) as a design target value. The distributions shown below exist because of the variations in thermal characteristics of different ICs. These distributions should be fully considered in the motor torque design. Also, output peak current should be less than 3 A because of the variations below, Detected current: Approximately from 3.5 to 6.5 A
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TB6549F/P
Test Circuit
1. Icc1, Icc2, Icc3, Icc4, IINH, IINL, IINSH, IINSL
A ICC 24V
CcpA CcpB CcpC 5V PWM
Vreg
VCC
OUT1 5V/0V A IIN A IIN A IINS IN1
TB6549F/P
IN2 OUT2
5V/0V
5V/0V
SB S-GND P-GND
* * * * * * * *
Icc1: IN1 = 0 V, IN2 = 0 V, SB = 5 V Icc2: IN1 = 5 V, IN2 = 5 V, SB = 5 V or IN1 = 0 V, IN2 = 5 V, SB = 5 V Icc3: IN1 = 5 V, IN2 = 5 V, SB = 5 V Icc4: IN1 = 5 V/0 V, IN2 = 5 V/0 V, SB = 0 V IINH: IN1 = 5 V, and IN2 = 5 V IINL: IN2 = 0 V, and IN2 = 0 V IINSH: SB = 5 V IINSL: SB = 0 V
2.
VINH, VINL, VINSH, VINSL
24V
CcpA CcpB CcpC 5V PWM
Vreg
VCC
OUT1 2V/0.8V IN1
TB6549F/P
0.8V/2V IN2 OUT2 V 2V/0.8V SB S-GND P-GND V
* * *
VINH, VINSH: IN1 = IN2 = SB = 2 V, Verify that OUT1 = OUT2 = L. VINL: IN1 = 0.8 V, IN2 = SB = 2 V, Verify that OUT1 = L, OUT2 = H. IN1 = SB = 2 V, IN2 = 0.8 V, Verify that OUT1 = OUT2 = L. VINSL: IN1 = IN2 = 2 V, SB = 0.8 V, Verify that output function is high impedance.
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TB6549F/P
3. VPWMH, VPWML, IPWMH, IPWML, fPWM, tw (PWM)
24V
CcpA CcpB CcpC 5V/0V 2V/0.8V 100kHz 5V 0V A IPWM PWM
Vreg
VCC
IN1
OUT1
TB6549F/P
IN2 OUT2 V 5V SB S-GND P-GND V
* * *
VPWMH, VPWML, fPWM: PWM = 2 V/0.8 V, 100 kHz, dury: 50 % (rectangle wave), Verify out1 VPWMH, VPWML: PWM = 5 V or PWM = 0 V. tw(PWM): PWM = 2 V/0.8 V, 100 kHz dury: 20 % (2 s) (2 s/rectangle wave), Verify out1
4.
Ron (H + L), Vreg
24V IO V CcpA CcpB CcpC 5V PWM OUT1 5V/0V IN1 Vreg VCC
V
TB6549F/P
0V/5V IN2 OUT2 V 5V SB S-GND P-GND IO
* *
Ron (H + L): Measure Vds (Sum of upper and lower side) at IO = 0.2 A, and change it to resistor. Same as at IO = 1.5 A. Vreg: Vreg pin Voltage.
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TB6549F/P
5. IL (U), IL (L)
30V A IL(L)
CcpA CcpB CcpC 5V PWM
Vreg
VCC
OUT1 0V IN1
TB6549F/P
0V IN2 OUT2 A 5V SB S-GND P-GND IL(H)
6.
VF (U), VF (L)
24V VF(H) V IO
V
CcpA CcpB CcpC 5V PWM
Vreg
VCC
OUT1 0V IN1
TB6549F/P
0V IN2 OUT2 IO V VF(L)
5V
SB S-GND P-GND
*
VF (U), VF (L): IO = 1.5 A.
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TB6549F/P
7. tONG
24V V
CcpA CcpB CcpC 5V PWM
Vreg
VCC
OUT1 0V IN1
TB6549F/P
0V 0V 5V IN2 OUT2
SB S-GND P-GND
*
tONG: SB = 0 V 5 V. Measure the time to boost CcpA voltage up about 29 V (24 V + 5 V)
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TB6549F/P
PD - Ta (TB6549P)
3.0 (1) (1) When mounted on PCB (50 x 50 x 1.6mm glass-epoxy PCB mounting occupied 50% of copper area.) (2) IC only
PD - Ta (TB6549F)
(W)
Thermal resistance 6 Rth (j-c) = 13C/W Rth (j-a) = 130C/W Note: 50 x 50 x 1 mm3 Fe heat sink 4 Infinite heat sink (Note) 2 No heat sink
Power dissipation PD
(W)
2.4
1.8 (2) 1.2
0.6
0 0
Maximum power dissipation PD MAX
40
80
120
160
200
240
0 0
50
100
150
200
Ambient temperature Ta (C)
Ambient temperature Ta (C)
External Attachments
Symbol C1 C2 C3 C4 C5 Charge pump Charge pump Prevention of Vreg oscillation Absorption of power noise Absorption of power noise Use Recommended Value 0.22 F 0.01 F 0.033 F 0.1 F to 1.0 F 0.001 F to 1 F 50 F to 100 F Remarks VCC = 24 V (Note) VCC = 12 V (Note)
Note: The recommended values for charge pumps depend on the VCC value. Please refer to the Component Description 4, Charge Pump Circuit.
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TB6549F/P
Typical Application Diagram
C2 5V C1
2/1 3/2 4/3
Note 4 C3 C4
Note 1 C5 24V
18/15 20/16
VDD
CcpA CcpB CcpC PWM PORT1 PORT2 PORT3
14/11
PWM IN1
Vreg VCC OUT1
7/6
10/8
TB6549F/P
8/7
M OUT2
12/10
IN2 SB S-GND
FIN/4,5,12,13
Note 2
17/14
GND
P-GND
11/9
Note 5 Microcontroller Note 3
TB6549F/TB6549P
TB6549F: Pins 1, 5, 6, 9, 13, 15, 16, and 19 are not connected.
Note 1: Connect VCC and P-GND through the power supply capacitor. This capacitor should be as close as possible to the IC. Note 2: When connecting the motor pins through the capacitor for reducing noise, connect a resistor to the capacitor for limiting the charge current. The switching loss increases for PWM control. Therefore, whenever practicable, avoid connecting the capacitor if PWM control is required. Note 3: Short-circuit S-GND and P-GND as close to TB6549 as possible. Note 4: Connect the capacitor C3 to S-GND. Note 5: Connect the capacitors C1 and C2 as close to TB6549 as possible, and the capacitor C1 as close to S-GND. Note 6: Pins 4, 5, 12, and 13 of the P type are connected to the chip's bed. Therefore, expanding their round area produces a better heat radiation effect.
Usage Precautions
* This IC includes an overcurrent detection circuit. However, if a short circuit takes place between output pins or if an output pin is connected to the voltage source or ground, a heavy current temporarily flows through the IC. It might destroy the IC. This possibility should be fully considered in the design of the output line, VCC line, and GND line. If the IC is destroyed, a heavy current might continuously flow through it as a secondary effect. Therefore, Toshiba recommends that a fuse be connected to the power supply line. Install this IC properly. If not, (e.g., installing it in the wrong position), the IC might be destroyed.
*
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TB6549F/P
Package Dimensions
Weight: 0.79 g (typ.)
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TB6549F/P
Package Dimensions
Weight: 1.11 g (typ.)
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TB6549F/P
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.
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