L9918 datasheet(65/109 Pages) STMICROELECTRONICS

номер детали	L9918

подробное описание детали	Alternator voltage regulator with LIN interface for 12 V applications

PDF	109 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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65 / 109 page

NVM register name

Definition

Notes

Description

#Bits Code

TV_SPRUNG

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

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

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

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

0x0

0 period

Number of delayed PWM periods before load

response control (LRC) start

0x1

1 period

0x2

2 periods

0x3

3 periods

POLZ

0x0

Poles pair number

0x1

0x2

0x3

0x4

0x5

reserved

0x6

reserved

0x7

reserved

L9918

NVM parameters table

DS13000 - Rev 2

page 65/109

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