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L9960 датащи(PDF) 45 Page - STMicroelectronics

номер детали L9960
подробное описание детали  Automotive Single/Dual H-Bridge, SPI programmable DC Brushed Motor Driver
PDF  95 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9960 датащи(HTML) 45 Page - STMicroelectronics

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DS11115 Rev 10
45/95
L9960, L9960T
Functional description
94
The ideal switching waveforms generated by an inductive load operating in switching mode
are described in the following figure. The Initial state of the bridge shown in the figure
corresponds to a freewheeling phase.
Figure 19. Ideal waveforms of switching with slew rate control
There are two phases during each turn-on and turn-off, in which the output slew-rate is
controlled: current slope control for phase A, and voltage slope control for phase B (phase
A and B refer to Figure 19).
During phase A (current slope control), a constant gate current IA results in a defined
dIout/dt due to the transconductance of the output stage (no closed loop control).
GAPGPS02336
Vgate_fb
VC,Miller
Vgate_fb
IA
IB
IA
IB
Vcharge_pump
IS1
IS2
ICP1
ICP2
VS/R_th
(RDSON min.)
AB
BA
1
2
3
4
5
6
7
8
9
10
Vout_on
ILoad=Vps/R* DC
ZOOM
VMOS
IOUT
Toverlap
Vbat
I load
GateDrive
HSideMOS
diode
I
out
V
drain_source
V
ds
I
gate_source
V
gate
I
Conditions)
(Initial
OFF
TURN-ON
ON
TURN-OFF
OFF



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