Current Controller DC Motor Driver

LMD18200
3A, 55V H-Bridge
General Description
The LMD18200 is a 3A H-Bridge designed for motion control
applications. The device is built using a multi-technology
process which combines bipolar and CMOS control circuitry
with DMOS power devices on the same monolithic structure.
Ideal for driving DC and stepper motors; the LMD18200
accommodates peak output currents up to 6A. An innovative
circuit which facilitates low-loss sensing of the output current
has been implemented.
Features
- Delivers up to 3A continuous output
- Operates at supply voltages up to 55V
- Low RDS(ON) typically 0.3Ω per switch
- TTL and CMOS compatible inputs
- No “shoot-through” current
- Thermal warning flag output at 145°C
- Thermal shutdown (outputs off) at 170°C
- Internal clamp diodes
- Shorted load protection
- Internal charge pump with external bootstrap capability

LMD18200 Datasheet Pdf

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2 Channel 600 mA Motor Driver Circuit

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DC Motor Speed Control Circuit

Since the I.C. integrates a full H-Bridge in a single
package it is idealy suited for controlling DC motors.
When used for DC motor control it performs
the power stage required for both speed and direction
control. The device can be combined with
a current regulator like the L6506 to implement a
transconductance amplifier for speed control, as
shown in figure. In this particular configuration
only half of the L6506 is used and the other half
of the device may be used to control a second
motor
The L6506 senses the voltage across the sense
resistor RS to monitor the motor current: it compares
the sensed voltage both to control the
speed and during the brake of the motor.

L6203
DESCRIPTION
The I.C. is a full bridge driver for motor control applications
realized in Multipower-BCD technology
which combines isolated DMOS power transistors
with CMOS and Bipolar circuits on the same chip.
By using mixed technology it has been possible to
optimize the logic circuitry and the power stage to
achieve the best possible performance. The
DMOS output transistors can operate at supply
voltages up to 42V and efficiently at high switching
speeds. All the logic inputs are TTL, CMOS
and C compatible. Each channel (half-bridge) of
the device is controlled by a separate logic input,
while a common enable controls both channels.
The I.C. is mounted in three different packages.

Freture
- SUPPLY VOLTAGE UP TO 48V
- 5A MAX PEAK CURRENT (2A max. for L6201)
- TOTAL RMS CURRENT UP TO
- L6201: 1A; L6202: 1.5A; L6203/L6201PS: 4A
- RDS (ON) 0.3 (typical value at 25 C)
- CROSS CONDUCTION PROTECTION
- TTL COMPATIBLE DRIVE
- OPERATING FREQUENCY UP TO 100 KHz
- THERMAL SHUTDOWN
- INTERNAL LOGIC SUPPLY
- HIGH EFFICIENCY

Current Controller DC Motor Driver

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4A Full Bridge Motor Driver Circuit

L298
FULL-BRIDGE DRIVER
DESCRIPTION
The L298 is an integrated monolithic circuit in a 15-
lead Multiwatt and PowerSO20 packages. It is a
high voltage, high current dual full-bridge driver designed
to accept standard TTL logic levels and drive
inductive loads such as relays, solenoids, DC and
stepping motors. Two enable inputs are provided to
enable or disable the device independently of the input
signals. The emitters of the lower transistors of
each bridge are connected together and the corresponding
external terminal can be used for the connection
of an external sensing resistor. An additional
supply input is provided so that the logic works at a
lower voltage.

Feature
- OPERATING SUPPLY VOLTAGE UP TO 46 V
- TOTAL DC CURRENT UP TO 4 A
-LOW SATURATION VOLTAGE
- OVERTEMPERATURE PROTECTION
- LOGICAL "0" INPUT VOLTAGE UP TO 1.5 V
(HIGH NOISE IMMUNITY)
- Supply Voltage 50 V
- Logic Supply Voltage 7 V

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2 Channel 600 mA Motor Driver Circuit

L293D
PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES

DESCRIPTION
The Device is a monolithic integrated high voltage,
high current four channel driver designed to
accept standard DTL or TTL logic levels and drive
inductive loads (such as relays solenoides, DC
and stepping motors) and switching power transistors.
To simplify use as two bridges each pair of channels
is equipped with an enable input. A separate
supply input is provided for the logic, allowing operation
at a lower voltage and internal clamp diodes
are included.
This device is suitable for use in switching applications
at frequencies up to 5 kHz.

Feature
- 600mA OUTPUT CURRENT CAPABILITY PER CHANNEL
- 1.2A PEAK OUTPUT CURRENT (non repetitive) PER CHANNEL
- ENABLE FACILITY
- OVERTEMPERATURE PROTECTION
- LOGICAL "0" INPUT VOLTAGE UP TO 1.5 V (HIGH NOISE IMMUNITY)
- INTERNAL CLAMP DIODES
- Supply Voltage 36 V
- Logic Supply Voltage 36 V

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