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TD340ID Datasheet(PDF) 9 Page - STMicroelectronics

Part # TD340ID
Description  H-BRIDGE QUAD POWER MOSFET DRIVER FOR DC MOTOR CONTROL
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TD340ID Datasheet(HTML) 9 Page - STMicroelectronics

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TD340
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Figure 3 : Synchronous Rectification Principle
Table 1 : Function Table in Digital and Analog Modes
Notes:
- Standby state is active when STB Y pin is pulled low
- Disable state is active when one of the following conditions is met: UVLO, OVLO, Reset, Watchdog Timeout.
Stby
State
Disable
State
IN1 (V)
IN2
(V)
Mosfets Status
Comments
digital
analog
Q1L
Q1H
Q2L
Q2H
1
X
X
X
X
OFF
OFF
OFF
OFF
Motor Off in Standby Mode
X
1
X
X
X
OFF
OFF
OFF
OFF
Motor Off in Disable Mode
0
0
0 idle
0 to 1.2
0
ON
OFF
ON
OFF
Motor Brake Low
0
0
0 idle
0 to 1.2
5
OFF
ON
OFF
ON
Motor Brake High
0
0
PWM
1.2 to 3.6
0
OFF
ON
PWM
!PWM
Motor x% Forward
0
0
PWM
1.2 to 3.6
5
PWM
!PWM
OFF
ON
Motor x% Backward
0
0
5 idle
3.6 to 5
0
OFF
ON
ON
OFF
Motor 100% Forward
0
0
5 idle
3.6 to 5
5
ON
OFF
OFF
ON
Motor 100% Backward
ex1:
Speed: PWM=x%
No synchronous rectification
HIGH DISSIPATION
THROUGH FREE WHEEL DIODE!
M
PWM
FULL
FULL
x%
1-x%
FULL
ON
OFF
OFF
ex2:
Speed: PWM=x%
With synchronous rectification - TD340
LOW DISSIPATION
THROUGH LOW Rdson!
M
PWM
FULL
FULL
x%
1-x%
PWM
ON
OFF


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