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L9918 Datasheet(PDF) 65 Page - STMicroelectronics

Part # L9918
Description  Alternator voltage regulator with LIN interface for 12 V applications
PDF  109 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9918 Datasheet(HTML) 65 Page - STMicroelectronics

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NVM register name
Definition
Notes
Description
#Bits Code
TV_SPRUNG
5
0x1A
Default load response control (LRC) blind zone
TV = 20.8%
0x1B TV = 21.6%
0x1C TV = 22.4%
0x1D TV = 23.2%
0x1E TV = 24.0%
0x1F TV = 24.8%
DFM_START_RAMP
1
0x0
Duty cycle calculated by
regulation loop
Output duty cycle value during LRC
0x1
Duty cycle calculated by
LRC function (real DC value
on EXC)
LR_TVFILT_SEL
1
0x0
high sensitivity (after filter) Change sensitivity for load response control (LRC)
activation (PWM selection before or after filter)
0x1
low sensitivity (before filter)
LR_TVFILTTIME
4
0x0
20 ms
Filter time constant of duty cycle
0x1
40 ms
0x2
60 ms
0x3
80 ms
0x4
100 ms
0x5
120 ms
0x6
140 ms
0x7
160 ms
0x8
180 ms
0x9
200 ms
0xA
220 ms
0xB
240 ms
0xC
2.5 ms
0xD
5ms
0xE
7.5 ms
0xF
10 ms
LR_TVFILTER_PER
2
0x0
0 period
Number of delayed PWM periods before load
response control (LRC) start
0x1
1 period
0x2
2 periods
0x3
3 periods
POLZ
3
0x0
5
Poles pair number
0x1
6
0x2
7
0x3
8
0x4
9
0x5
reserved
0x6
reserved
0x7
reserved
L9918
NVM parameters table
DS13000 - Rev 2
page 65/109



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