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ISOW1044

更新时间： 2024-11-19 02:51:47
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德州仪器 - TI /
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45页 3180K
描述
ISOW1044 Isolated CAN FD Transceiver with Integrated Low-Emissions, Low-Noise, High-Efficiency DC-DC Converter

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ISOW1044 数据手册

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ISOW1044  
SLLSFF7A – MAY 2021 – REVISED DECEMBER 2021  
ISOW1044 Isolated CAN FD Transceiver with Integrated Low-Emissions, Low-Noise,  
High-Efficiency DC-DC Converter  
– UL 1577 component recognition program  
– IEC 62368-1, IEC 61010-1, IEC 60601-1 and  
1 Features  
•
Meets the requirements of ISO 11898-2:2016  
physical layer standards  
– Support of Classical CAN: 1 Mbps  
– Optimized for CAN FD: 2 and 5 Mbps  
Integrated DC-DC converter with low-emissions,  
low-noise  
– Meets CISPR 32 and EN 55032 Class B with  
greater than 6 dB margin on a two-layer PCB  
– Low frequency power converter at 25 MHz  
enabling low noise performance  
GB 4943.1-2011 certifications  
2 Applications  
•
•
•
•
•
Factory Automation  
Building Automation  
Industrial Transport  
Solar Inverters, Protection Relay  
Motor Drives  
•
3 Description  
The ISOW1044 device is a galvanically-isolated  
controller area network (CAN) transceiver with a  
built-in isolated DC-DC converter that eliminates the  
need for a separate isolated power supply in space-  
constrained isolated designs. The low-emissions,  
isolated DC-DC meets CISPR 32 radiated emissions  
Class B standard with just two ferrite beads on  
a simple two-layer PCB. Additional 20 mA output  
current can be used to power other circuits on the  
board. An integrated 10 Mbps GPIO channel is  
available and can help remove an additional digital  
isolator or optocoupler for diagnotstics, LED indication  
or supply monitoring.  
•
•
Additional 10 Mbps GPIO channel  
High efficiency output power  
– Typical efficiency: 47%  
– Isolated output voltage accuracy: ± 5%  
– Additional output current: 20 mA  
Independent power supply for CAN & DC-DC  
– Logic supply (VIO): 1.71 V to 5.5 V  
– Power converter supply ( VDD): 4.5 V to 5.5 V  
Fault-Protected CAN FD Transceiver  
– DC Bus fault protection voltage: ± 58V  
– Receiver common mode input voltage: ±12 V  
– Remote wakeup via BUS wake-up pattern  
Typical loop delay: 167 ns  
•
•
•
•
•
•
Device Information  
Reinforced and Basic isolation options  
High CMTI: 100-kV/µs (typical)  
High ESD bus protection w.r.t GND2  
FEATURE  
ISOW1044  
Reinforced  
10 kVPK  
ISOW1044B  
Basic  
Protection Level  
Surge Test Voltage  
Isolation Rating  
Working Voltage  
– HBM ESD: ±12 kV  
7.8 kVPK  
5000 VRMS  
– IEC 61000-4-2 contact discharge: ±8 kV  
Operating temperature range: -40°C to 125°C  
Current limit and thermal shutdown  
20-pin wide SOIC package  
5000 VRMS  
•
•
•
1000 VRMS/1500 1000 VRMS/1500 VPK  
VPK  
Package  
DFM (20)  
DFM (20)  
•
Safety-Related Certifications planned:  
Body Size (Nom)  
12.83mm × 7.5 mm 12.83mm × 7.5 mm  
– VDE Reinforced and Basic insulation per DIN  
VDE V 0884-11:2017-01  
VCC  
Must be connected on PCB,  
not connected internally  
VIO  
VISOIN  
TXD  
CANH  
CAN  
BUS  
STB  
Signal  
RXD  
CANL  
OUT  
Signal  
Isolation  
CAN  
MCU  
Isolation  
IN  
GNDIO  
GISOIN  
VDD  
VISOOUT  
GND2  
DC-DC  
Primary  
DC-DC  
Secondary  
GND1  
Galvanic Isolation  
Barrier  
Simplified Schematic  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
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