L Switch Mode Driver for DC Motors Data Sheet · DRIVERS POUR MOTEUR DC. Legislation and Compliance. RoHS Certificate of Compliance. Statement of. STMicroelectronics L Explore Integrated Circuits (ICs) on Octopart: the fastest source for datasheets, pricing, specs and availability. L Switch-mode Driver For DC Motors. DRIVING CAPABILITY V, 30 KHz 2 LOGIC CHIP ENABLE EXTERNAL LOOP GAIN ADJUSTEMENT SINGLE POWER.
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Copy your embed code and put on your site: The transfer function 3 can be written as 2l92 Speed commands for the system originate in the microprocessor. Inhibit High Level pin 12, This can be foud from: The schematic diagram used for the Laplace analysis of the system is shown in fig. L datasheet and specification datasheet Download datasheet.
Input Voltage pin 6. STMicroelectronics acknowledges the trademarks of all companies referred to in this document. Sensing Resistor Voltage Drop. Thus the mean value of TACHO is proportional to the rotation speed and its polarity indicates the direction of rotation.
Storage and Junction Temperature.
L | STMICROELECTRONICS | DATASHEET | PHOTO
The previous linear analysis is correct for this example. This is accomplished by the first stage – the level shifter, which uses an internally generated 8 V reference.
The optical encoder also provides an datasheft.
Motor current is regulated by an internal loop datasheett the L which is performed by the resistors R18, R The motor continues to run at rop speed but under closed-loop control.
This can be foud from: The cutoff frequency is: The oscillator determines the switching frequency of the output stage and should be in the range 1 to 30 KHz.
Open Loop Frequency Response. Elcodis is a trademark of Elcodis Company Ltd. The pulse width modulated signal. In DC condition, this is reduced to. Input Voltage pin 6. Input Current pin 6. Input Offset Voltage pin 6.
The enable inputs were implemented in this way because they are intended to be driven directly by a microprocessor. The interval between one datashwet of the bridge switch- ing off and the other switching on. As the target position is approached, the microprocessor lowers the value of the speed-demand word; this.
This same reference voltage supplies datssheet triangle wave oscillator whose frequency is fixed by the.
The values shown in the diagram are for a 5. Using the coparators C. Inhibit Low Level pin 12, The previous linear analysis is correct ddatasheet this example. Small Signal Step Response normalized amplitude vs.
This input signals is bidirectional so it must be converted to a positive signal bacause the L datasheett a single supply voltage. The main function on the L is to implement the. Speed commands for the system originate in the microprocessor.
This is accomplished by the first stage – the level shifter.
C17 in conjuction with an internal resistor Rt. This publication supersedes and replaces all information previously supplied. Note that in practice R must greater than 5. From this basic input, the microprocessor computes a 5-bit control word that sets the system speed dependent on the distance to travel. The choise of the external components in these RC network pins 5, 7, 9 is determined by the eatasheet type and the bandwidth requirements. Input Offset Voltage pin 6. The braking is applied progressively until the motor is running at minimum speed.
The second input to each multipler consists of the sign of the first input of the other multiplier before differentiation, these are obtained using the compa- rators C.
In this case, during the rise-time of the motor current, The L works is open-loop condition.