L292_03 STMICROELECTRONICS [STMicroelectronics], L292_03 Datasheet

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L292_03

Manufacturer Part Number
L292_03
Description
SWITCH-MODE DRIVER FOR DC MOTORS
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
DESCRIPTION
The L292 is a monolithic LSI circuit in 15-lead Mul-
tiwatt
with L290 and L291, as a complete 3-chip motor
positioning system for applications such as car-
riage/daisy-wheel position control in type-writes.
BLOCK DIAGRAM
July 2003
DRIVING CAPABILITY : 2 A, 36 V, 30 KHz
2 LOGIC CHIP ENABLE
EXTERNAL LOOP GAIN ADJUSTEMENT
SINGLE POWER SUPPLY (18 TO 36 V)
INPUT SIGNAL SYMMETRIC TO GROUND
THERMAL PROTECTION
®
package. It is intended for use, together
SWITCH-MODE DRIVER FOR DC MOTORS
The L290/1/2 system can be directly controlled by
a microprocessor.
ORDERING NUMBER: L292
MULTIWATT15 V
L292
1/13

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L292_03 Summary of contents

Page 1

DRIVING CAPABILITY : KHz 2 LOGIC CHIP ENABLE EXTERNAL LOOP GAIN ADJUSTEMENT SINGLE POWER SUPPLY ( INPUT SIGNAL SYMMETRIC TO GROUND THERMAL PROTECTION DESCRIPTION The L292 is a monolithic LSI circuit in ...

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L292 PIN CONNECTION (Top view) ABSOLUTE MAXIMUM RATINGS Symbol V Power Supply s V Input Voltage i V Inhibit Voltage inhibit I Output Current o P Total Power Dissipation (T tot T Storage and Junction Temperature stg THERMAL DATA Symbol ...

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ELECTRICAL CHARACTERISTCS Symbol Parameter V Supply Voltage S I Quiescent Drain Current d V Input Offset Voltage (pin Inhibit Low Level (pin 12, 13) inh Inhibit High Level I Low Voltage Condition inh High Voltage Condition I ...

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L292 The system operates in two modes to achieve high speed, high-accurancy positioning. Speed commands for the system originate in the microprocessor continuosly updated on the motor position by means of pulses from the L290 tachometer chip, whitch ...

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Pin 12 of this chip is the main summing point of the system where TACHO and the D/A converter output are compared. The input to D/A converter consists of 5 bit word plus a sign bit supplied by the microprocessor. ...

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L292 Figure 2. Figure 3. Figure 4. Application Circuit. 6/13 ...

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APPLICATION INFORMATION This section has been added in order to help the designer for the best choise of the values of external components. Figure 5. L292 Block Diagram. The schematic diagram used for the Laplace analysis of the system is ...

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L292 (DC transfer function from the input of the comparator (V ---------- - Neglecting the VCEsat of the bridge transistors and the VBE of the diodes ...

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Figure 7. Open Loop Frequency Response CLOSED-LOOP SYSTEM STEP RESPONSE a) Small - signals analysis. The transfer function (3) can be written as follows ------------- - I 2 0.044 M o ----- s -------------- - ------------------------------- - ...

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L292 Figure 8. Small Signal Step Response (normalized amplitude vs 200 mV/div 100 mA/div 100 s/div. with V = 1.5 Vp possible to verify that the ...

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Example : a) Data – Motors characteristics 1msec – Voltage and current characteristics – Closed loop bandwidth : ...

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L292 mm DIM. MIN. TYP. MAX 2. 0.49 0.55 0.019 F 0.66 0.75 0.026 G 1.02 1.27 1.52 0.040 G1 17.53 17.78 18.03 0.690 H1 19.6 0.772 H2 20.2 L 21.9 22.2 ...

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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. ...

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