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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In DC condition, this is reduced to. The braking is applied pro. The L internal reference voltage is also derived from V.
Input Offset Voltage pin 6. The enable inputs were implemented datashset this way because they are intended to be driven directly by a microprocessor.
L STMicroelectronics Switch-mode Driver For Dc Motors ChipFind Datasheet Archive |
Dataasheet inputs may be used for a variety of applications such as motor inhibit during reset of the logical. The error signal obtained by the addition of the input and the current feedback signals pin 7 is used to. The cutoff frequency is: The current sense resistors R18 and R19 should be high precision types maximum tolerance? The pulse width modulated sig- nal controls the duty cycle of the Hbridge to give an output current corresponding to the L input signal.
Information furnished is believed to be accurate and reliable.
The motor continues to run at rop speed but under closed-loop control. Motor current is regulated by dagasheet internal loop in the L which is performed by the resistors R.
These inputs may be used for a variety of applications such as motor inhibit during reset of the logical system and dataseet reset see fig. But for a good stability, daatasheet relationship.
The main function on the L is to implement the following expression: Small Signal Step Response normalized amplitude vs. This same reference voltage supplies the triangle wave oscillator whose frequency is fixed by the. Total Drop Out Voltage. It is possible to synchronize two L ‘s, if desired, using the network shown in fig. From this basic input, the microprocessor computes a 5-bit control word that sets the system speed dependent on the distance to travel.
It is possible to synchronize two L ‘s, if desired, using the network shown in fig. The pulse width modulated signal.
STMicroelectronics acknowledges the trademarks of all companies referred to in this document. The “one pulse per rotation” opto encoder output is connected to pin 12 of the L FTF where it is.
The braking is applied progressively until the motor is running at minimum speed. The motor continues to run at rop speed but under closed-loop control. Transfer Function Calculation in Application Information. Frequency range pin The optical encoder also provides an out.
The schematic diagram used for the Laplace analysis of the system is shown in fig. It is continuosly updated on the motor. The output will also be. At the time, the microprocessor orders a switch to the position mode, strobe signal at pin 8 of L and within 3 to 4 ms the L drives the motor to a null position, where it is held by electronic “de- tenting”.
Input Voltage pin 6. The oscillator determines the switching frequency of the output stage and should be in the range 1 to In order to be sure that the current loop is stable the following condition is imposed: However, STMicroelectronics assumes no responsibility for the consequences.
This input signals is bidirectional so it must be converted to a positive signal ba. Inhibit Low Level pin 12, All other trademarks are the property of their respective owners. Input Offset Voltage pin 6. This signals are used by the microprocessor to determine the position by counting the pulses.
The “one pulse per rotation” opto encoder output is connected to pin 12 of the L FTF where it is squared to give the STF logic output for the micro- processor. In order to achieve good stability, the phase margin must be greater than 45? Search field Part name Part description. This signals are used by the microprocessor to determine the position by counting the pulses. The enable inputs were implemented in this way because they are intended to be driven directly by a mi.