TB6559FG Toshiba, TB6559FG Datasheet
TB6559FG
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TB6559FG Summary of contents
Page 1
... TOSHIBA Bi-CD Integrated Circuit Silicon Monolithic Full-Bridge DC Motor Driver IC The TB6559FG is a full-bridge DC motor driver with LDMOS output transistors. It uses P-channel MOSFETs on the high side and N-channel MOSFETs on the low side, eliminating the need for a charge pump. The TB6559FG achieves high thermal efficiency. ...
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... Block Diagram VREG 15 REG IN1 1 IN2 16 Decoder SB 2 OSC/PWM 14 4/12/13 ALERT Overcurrent Protection Thermal Shutdown Timing Logic OSC/PWM 3 S-GND V ref 2 TB6559FG 7 OUT1 9 OUT2 8 10 RSA P-GND 2009-04-14 ...
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... A I (Ave) 1 1.4 (Note − °C opr −55 to 150 T °C stg Symbol Rating Unit 100 kHz CLK 500 kHz OSC VREGout TB6559FG Remarks ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 2009-04-14 ...
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... Not tested Δ production OSC/PWM I OSC(+) (source current OSC/PWM I OSC(−) (sink current) = − ALERT(H) ALERT = ALERT(L) ALERT 4 TB6559FG Min Typ. Max Unit ⎯ ⎯ ⎯ ⎯ ⎯ 2 5.5 −0.2 ⎯ 0.8 V ⎯ ⎯ ...
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... SW1 SW2 100 kΩ *The circuit diagram is simplified for description. must be between 0 V and 3 V (SW1: ON, SW2: OFF) and a capacitor must ref 5 TB6559FG VREG VREG input (See the “Pin ref voltage. ref 2009-04-14 ...
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... Vref H Capacitor ⋅ ⎯ H Capacitor ⎯ L Capacitor TB6559FG Output OUT1 OUT2 Mode L L Short brake Constant-current chopping L CCW L Short brake Short brake OFF Stop (Hi-Z) OFF Standby (Hi- Short brake L H CCW ...
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... Output voltage waveform (OUT1 ref = 4 OUT1 M RS PWM ON → OFF t2 = 300 ns (typ OUT1 M RS PWM TB6559FG input voltage as follows: ref V CC OUT1 M RS PWM OFF GND 2009-04-14 ...
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... Discharge mode. ref Coil current Coil current Discharge Charge /6), the regulator enters Discharge mode. Four CK cycles ref /6, the regulator enters and remains in Charge mode until V ref Discharge Discharge Charge 8 TB6559FG Discharge > when it enters RS ref is again compared RS reaches RS Charge 2009-04-14 ...
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... C OSC OSC Reference Voltage Generator In constant-current mode, the peak current is determined by the /RS × 1/6 [A] O ref OUT1 M OUT2 Coil current Discharge Charge [F] × 600)} [Hz] OSC ref V CC Control circuit 1/6 9 TB6559FG Discharge voltage, as follows: Vref 2009-04-14 ...
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... The TB6559FG includes a 5-V power supply for control circuit biasing. • For oscillation prevention, a capacitor should be connected between VREG and S-GND. Although VRGE can be used to control the inputs to the TB6559FG, the maximum load current should be limited to 1 mA. • The TB6559FG has power monitoring circuitry that turns off the output when VREG falls below 6.0 V (design target value) ...
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... GND Section • The TB6559FG has two separate grounds: S-GND for the control circuitry and P-GND for the output circuitry. S-GND and P-GND should be short-circuited at a location as close to the TB6559FG as possible. ALERT Circuit • When either the thermal shutdown or overcurrent protection circuit is activated, the ALERT output goes High (CMOS output) ...
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... Output current ALERT output The TB6559FG allows for the sensing of the current that flows through each output transistor. The currents through each of the output transistors are continually monitored. In the event of an overcurrent in at least one of the transistors, the overcurrent protection circuitry turns all transistors off. ...
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... Typical Characteristics Graphs TB6559FG External Components Symbol Use C VREG oscillation prevention 1 C Power noise absorption 2 C Power noise absorption 3 TB6559FG Recommended Value Remarks 0.1 μF to 1.0 μF ⎯ 0.001 μ μF ⎯ 50 μF to 100 μF ⎯ 13 TB6559FG 2009-04-14 ...
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... Note 2: When a capacitor is connected between the motor pins to reduce noise, a resistor should also be inserted to limit the charge current. This capacitor causes the switching loss to increase for PWM control; therefore, this capacitor should not be used, if possible. Note 3: S-GND and P-GND should be short-circuited at a location as close to the TB6559FG as possible. (Same for Fin) Note 4: The capacitor C should be connected to S-GND ...
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... Usage Precautions • Although the TB6559FG contains overcurrent detection circuitry, a large current might abruptly flow through the IC in case of a short-circuit to power supply, a short-circuit to ground or a short-circuit across the load, damaging the device permanently. This possibility should be fully considered in the design of the output, V and ground lines ...
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... Package Dimensions Weight: 0.50 g (typ.) 16 TB6559FG 2009-04-14 ...
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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. 17 TB6559FG 2009-04-14 ...
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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. 18 TB6559FG ) at any time j 2009-04-14 ...
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... Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 19 TB6559FG 2009-04-14 ...