L292 datasheet(6/12 Pages) STMICROELECTRONICS

Part #	L292

Description	SWITCH-MODE DRIVER FOR DC MOTORS

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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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.

6/12

The schematic diagram used for the Laplace analysis of the system is shown in fig. 6.

Figure 6.

RS1 = RS2 = RS (sensing resistors)

1

R4

= 2.5

• 10-3 Ω (current sensing amplifier transconductance)

LM = Motor inductance, RM = Motor resistance, IM = Motor current

Gmo

=

IM

| s = 0 (DC transfer function from the input of the comparator (VTH) to the motor

current (IM)).

L292

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