TB6608FNG Toshiba, TB6608FNG Datasheet
TB6608FNG
Specifications of TB6608FNG
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TB6608FNG Summary of contents
Page 1
... IC designed for sinusoidal-input micro-step control of stepping motors. The TB6608FNG can be used in applications that require 2-phase, 1-2-phase, W1-2-phase and 2W1-2 phase excitation modes. The TB6608FNG is capable of forward and reverse driving of a 2-phase bipolar stepping motor using only a clock signal. Features • ...
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... ENABLE 19 DCY OSC 3 OSC UVLO 2 V B.G Vref 2 switches 0.125 V, 0.5 V Vref Voltage Setting Input Vref TQ L 0.125 TB6608FNG Pre- 13 AO1 H-bridge driver A 11 AO2 PWM timer 12 RFA TSD BO1 Pre- H-bridge B driver 8 BO2 PWM timer 9 RFB 2007-12-17 ...
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... Initial state Low (open drain, pulled external resistor) See the Vref Voltage Setting table. See the Fast-Decay Time Inserted During the Current Decay Period table. See the Input Signal and Operating Modes table TB6608FNG Remarks = 2 2 ENABLE 18 DCY GND 14 RESET ...
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... In this specification, the direction of current flows from AO1 to AO2 and from BO1 to BO2 are defined as the forward direction. ENABLE STBY CCW H H Initial mode L H Enable Wait mode (Outputs: high impedance Standby mode (Outputs: high impedance) 2-phase 1-2-phase W1-2-phase B-Phase Current − 100% 100% 100% 0% 100% 0% 100 TB6608FNG Operating Mode 2007-12-17 ...
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... Excitation (M1 Mode (%) 100 − 71 − 100 (%) 100 − 71 − 100 2-Phase Excitation (M1: L, M2: L, CCW Mode (%) 100 − 100 (%) 100 − 100 1-2-Phase Excitation (M1: H, M2: L, CCW Mode (%) 100 − 71 − 100 (%) 100 − 71 − 100 TB6608FNG 2007-12- ...
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... W1-2-Phase Excitation (M1 Mode (%) 100 − 38 − 71 − 92 − 100 (%) 100 − 38 − 71 − 92 − 100 TB6608FNG 2007-12- ...
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... W1-2-Phase Excitation (M1: L, M2: H, CCW Mode (%) 100 − 38 − 71 − 92 − 100 (%) 100 − 38 − 71 − 92 − 100 TB6608FNG 2007-12- ...
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... Excitation (M1 Mode (%) 100 − 20 − 38 − 56 − 71 − 83 − 92 − 98 − 100 (%) 100 − 20 − 38 − 56 − 71 − 83 − 92 − 98 − 100 TB6608FNG 2007-12- ...
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... Excitation (M1: H, M2: H, CCW Mode (%) 100 − 20 − 38 − 56 − 71 − 83 − 92 − 98 − 100 (%) 100 − 20 − 38 − 56 − 71 − 83 − 92 − 98 − 100 TB6608FNG 2007-12- ...
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... TB6608FNG (Only when in 2-phase excitation mode) Solid line: Ideal value Broken line: Calculated value 100 Vector Length Calculated ⎯ 100.00 ⎯ 100.02 ⎯ ...
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... Therefore, when the ENABLE signal goes High again, the output current generation is restarted as if phases proceeded with the CK signal. CK ENABLE RESET MO (%) 100 71 Phase current (AO1, AO2) 0 − 71 − 100 t 0 Example 2: 2W1-2-phase excitation (M1 ENABLE RESET MO (%) 100 − 20 − 38 − 56 − 71 − 83 − 92 − 98 − 100 OFF OFF TB6608FNG 2007-12- ...
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... CK with the state following the Initial state. CK ENABLE RESET MO (%) 100 71 Phase current 0 (AO1, AO2) − 71 − 100 t 0 Example 2: 2W1−2 phase excitation (M1 ENABLE RESET MO (%) 100 − 20 − 38 − 56 − 71 − 83 − 92 − 98 − 100 TB6608FNG 2007-12- ...
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... V I OUT M 4.8 V < V ≤ 13 OUT M ⎯ ⎯ fck ⎯ fosc ⎯ fchop (Since this is an approximation formula, the calculation result may differ from the actual value.) 13 TB6608FNG Unit °C °C Min Typ. Max 2.7 3.3 5.5 2.5 5 13.5 ⎯ ⎯ ...
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... One of those resistors is connected between RFA NF and GND, and the other is connected between RFB and GND. Timing chart may be simplified for the sake of brevity. RF off on off on 14 TB6608FNG voltage reaches Vref off on 2007-12-17 ...
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... This permits a synchronous rectification PWM operation without controlling the dead time externally OUT1 M OUT2 <PWM: ON> t1 OUT1 <PWM: OFF → ON> 200 ns (typ.) Output voltage waveform (OUT1 OUT1 M OUT2 <PWM: ON → OFF> 200 ns (typ OUT2 OUT1 <PWM: ON> TB6608FNG V M OUT1 M OUT2 <PWM: OFF> OUT2 GND 2007-12-17 ...
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... Vref voltage, the constant-current regulator enters Discharge mode. RF After four cycles of CK, an internal clock generated by OSC, the regulator moves from Discharge mode to Charge mode. Vref OSC Internal CK Vref V RF GND Vref Iout Charge V RF Discharge Charge Discharge Charge Discharge 16 TB6608FNG Discharge 2007-12-17 ...
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... Vref, the regulator remains in Charge mode until OSC Internal CK Vref V RF Charge Discharge GND Vref Iout Charge Slow decay RF reaches Vref. RF Discharge Charge Charge Slow decay Charge Charge Fast decay 17 TB6608FNG > Vref when it enters Charge mode, is again compared against Vref 2007-12-17 ...
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... Even when the Vref voltage is increased, the regulator remains in Discharge mode for four CK cycles and then enters Charge mode. During acceleration, the current decays only in slow-decay mode. OSC Internal CK Vref GND Vref Iout Charge OUT2 OUT1 (Fast decay mode Discharge Charge Discharge Charge 18 TB6608FNG OUT2 Discharge Discharge 2007-12-17 ...
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... Also, it should be ensured that the DCY input is set High only when the coil of a motor has an inductance of 1 higher where fosc is no less than 100 kHz. Thermal Shutdown (TSD) Circuit The TB6608FNG includes a thermal shutdown circuit, which turns the output transistors off when the junction temperature (T ) exceeds 160°C (typ.). ...
Page 20
... hysteresis of 0.03 V. Even when UVLO circuit is tripped, internal circuitry continues to operate in accordance with the CK input like when ENABLE is set Low. Thus, after the TB6608FNG exits the UVLO mode, the RESET signal should be asserted for putting the TB6608FNG in the Initial state if necessary. ...
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... CK to Output t pHL 7 t pLH RESET to Output t pHL t pLH ENABLE to Output t pHL TB6608FNG Min Typ. Max ⎯ 0.3 0.4 ⎯ 0.9 1.2 ⎯ 1 1.2 ⎯ 1 1.2 ⎯ ⎯ 100 92 98 101 TQ Ω 220 pF ...
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... Test Circuit 3 INH INL CW/CCW RESET ENABLE STBY M1 M2 DCY TQ OSC GND INH CW/CCW RESET ENABLE STBY M1 M2 DCY TQ OSC GND 22 TB6608FNG AO1 AO2 BO1 BO2 Oscilloscope 2 Ω RFA 2 Ω RFB AO1 AO2 BO1 BO2 2 Ω RFA 2 Ω RFB 2007-12-17 ...
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... Test Circuit RFA RFB = 3 Test Circuit 4: V SAT (UL AO1 CW/CCW AO2 RESET BO1 ENABLE BO2 STBY RFA M1 RFB M2 DCY TQ OSC GND AO1 CW/CCW AO2 RESET BO1 ENABLE BO2 STBY RFA M1 RFB M2 DCY TQ OSC GND 23 TB6608FNG = 2007-12-17 ...
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... Test Circuit Test Circuit 3 AO1 CW/CCW AO2 RESET BO1 ENABLE BO2 STBY RFA M1 RFB M2 DCY TQ OSC GND AO1 CW/CCW AO2 RESET BO1 ENABLE BO2 STBY RFA M1 RFB M2 DCY TQ OSC GND 24 TB6608FNG 2007-12-17 ...
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... AC Electrical Characteristics, Test Circuit 7: CK (OSC) and Output Voltage CLOCK (OSC Output voltage GND t CLOCK 50% 50 OSC 90% 50% 10 pLH 25 TB6608FNG t CLOCK (t ) OSC 90% 50% 10 pHL 2007-12-17 ...
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... Install this IC correctly. If not, (e.g., installing it in the wrong position,) the IC may be damaged permanently. Fuses should be connected to the power supply lines CW/CCW RESET ENABLE STBY M1 M2 DCY TQ OSC GND must be applied after applying TB6608FNG = AO1 Stepping Motor AO2 BO1 BO2 2 Ω RFA 2 Ω RFB . At the power-off, V must be turned off after ...
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... Package Dimensions Weight: 0.09 g (typ.) 27 TB6608FNG 2007-12-17 ...
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... Otherwise, the current or power consumption may exceed the absolute maximum rating, and exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. In addition, do not use any device that is applied the current with inserting in the wrong orientation or incorrectly even just one time. 28 TB6608FNG 2007-12-17 ...
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... If the current sink capability of the power supply is small, the device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system design. 29 TB6608FNG ) at any J 2007-12-17 ...
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... Please use this product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations. 060819_AF • The products described in this document are subject to foreign exchange and foreign trade control laws. 021023_D 021023_B 060106_Q 30 TB6608FNG 070122EBA_R6 060925_E 2007-12-17 ...