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L9945 Datasheet(PDF) 49 Page - STMicroelectronics

No. de pieza L9945
Descripción Electrónicos  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  151 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9945 Datasheet(HTML) 49 Page - STMicroelectronics

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COMMAND 1
Frame partitioning
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
C
OC_CONFIG_01
Description:
OUT1 configuration and H-Bridge 1 diagnostic time
[31:28] C: Command 1
0001
[27] R/W: Bit to read/write configuration
0: Write & request read
1: Request read only
[25:26] HB1_DEAD_TIME: H-bridge1 dead time to avoid cross conduction
00: 1 µs
01: 2 µs
10: 4 µs
11: 8 µs
[24] HB1_TDIAG_EXT_CONFIG: Selection of tdiag timers for H-bridge 1. This function only applies when HB1_config = 1
0: H-bridge tdiag timers for HB1. The programmed TDIAG_CONFIG_01 will be extended to CH2. CH3 and CH4.
1: Standard tdiag timers for HB1. The programmed TDIAG_CONFIG_01 is valid only for CH1, while CH2, CH3 and CH4 must
be set individually.
[23:22] TDIAG_CONFIG_01:
H-bridge 1 OFF state diagnostic blanking/filter timer. This values are valid only when HB1_tdiag_ext_config = 0 & HB1_config
= 1.
00: 11.2 µs
01: 28.9 µs
10: 40 µs
11: 51.2 µs
OFF state diagnostic blanking/filter timer for CH1. It is valid for HB1 only when HB1_tdiag_ext_config = 1 & HB1_config = 1
00: 25.6 µs
01: 61.2 µs
10: 105.6 µs
11: 150 µs
[21] OC_READ_01: Selection of the OC threshold to read. Fixed threshold or actual threshold.
0: Read fixed OC threshold
1: Read actual OC threshold
L9945
SPI MOSI/MISO list
DS12275 - Rev 8
page 49/151



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