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L9960 데이터시트(PDF) 40 Page - STMicroelectronics

부품명 L9960
상세설명  Automotive Single/Dual H-Bridge, SPI programmable DC Brushed Motor Driver
PDF  95 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9960 데이터시트(HTML) 40 Page - STMicroelectronics

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Functional description
L9960, L9960T
40/95
DS11115 Rev 10
Figure 18. 4 cases of high-side/low-side activation (IN1/IN2 mode)
An active freewheeling is automatically set, at the end of the dead time, which means that
the power transistor in parallel to the internal freewheeling diode is switched on during
freewheeling phase.
This should lead to a power dissipation decrease when driving inductive loads.
Warning:
In case of current limitation event in IN1/IN2 mode, the
freewheeling is automatically set back to LS drivers.
It is advised against selecting the HS recirculation in IN1/IN2
mode as L9960 is not safely protected against external failures
(i.e SCG).
For IN1/IN2 mode it is advised to recirculate (active
freewheeling) on low-side drivers only.
For PWM mode the recirculation is set by design on LS
drivers only.
VPS
M
VPS
VPS
T
T3
Forward, T1 and T4 active
IN1 = 1 , IN2 = 0
T1
M
T3
T1
T4
T2
T4
T2
LS Freewheeling via T3 to T4
IN1 = 0 , IN2 = 0
T3
T1
M
T2
T4
HS Freewheeling via T2 to T1
IN1 = 1 , IN2 = 1
3
T1
Reverse , T2 and T3 active
IN1 = 0 , IN2 =1
VPS
M
T4
T2
GAPGPS02335
Note: Please refer to warning message.



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