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ACS37800KMACTR-0303BI2C PDF预览

ACS37800KMACTR-0303BI2C

更新时间: 2024-02-17 07:11:35
品牌 Logo 应用领域
急速微 - ALLEGRO 监控
页数 文件大小 规格书
41页 3451K
描述
Isolated, Digital Output, Power Monitoring IC

ACS37800KMACTR-0303BI2C 数据手册

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ACS37800  
Isolated, Digital Output, Power Monitoring IC  
with Zero-Crossing Detection, Overcurrent and Overvoltage Flagging  
DESCRIPTION  
FEATURES AND BENEFITS  
• Accurate power monitoring for AC and DC applications  
• UL 60950-1 (ed. 2) and UL 62368-1 (ed. 1) certified for  
reinforced isolation up to 517 VRMS in a single package  
• Accurate measurements of active, reactive, and apparent  
power, as well as power factor  
• Separate RMS and instantaneous measurements for both  
voltage and current channels  
• Two programmable averaging blocks  
TheAllegroACS37800powermonitoringICgreatlysimplifies  
the addition of power monitoring to manyAC or DC powered  
systems. The sensor may be powered from the same supply  
as the system’s MCU, eliminating the need for multiple  
power supplies. The device’s construction includes a copper  
conduction path that generates a magnetic field proportional  
to applied current. The magnetic field is sensed differentially  
to reject errors introduced by common mode fields.  
0.85 mΩ primary conductor resistance for low power loss  
and high inrush current withstand capability  
• Compatible with floating and non-floating GND  
• Dedicated voltage or current zero crossing pin  
• Fast, user-programmable overcurrent fault pin (5 µs typ.)  
• User-programmable undervoltage and overvoltage RMS  
thresholds  
• 1 kHz bandwidth  
• Current sensing range up to 90 A  
• Options for I2C or SPI digital interface protocols  
Allegro’s Hall-effect-based, galvanically isolated current  
sensing technology achieves reinforced isolation ratings  
(4800 VRMS) in a small PCB footprint. These features enable  
isolated current sensing without expensive Rogowski coils,  
oversizedcurrenttransformers,isolatedoperationalamplifiers,  
or the power loss of shunt resistors.  
The ACS37800 power monitoring IC offers key power  
measurement parameters that can easily be accessed through  
its SPI or I2C digital protocol interfaces. Dedicated and  
configurable I/O pins for voltage/current zero crossing,  
undervoltage and overvoltage reporting, and fast overcurrent  
fault detection are available in I2C mode. User configuration  
of the IC is available through on-chip EEPROM.  
PACKAGE  
16-pin SOICW (suffix MA)  
The ACS37800 is provided in a small low-profile surface  
mountSOIC16wide-bodypackage,islead(Pb)free,andisfully  
calibrated prior to shipment from theAllegro factory. Customer  
calibration can further increase accuracy in application.  
Not to scale  
REINFORCED  
ISOLATION  
N (L)  
L (N)  
1 M1 MΩ  
MCU  
RSENSE  
1 M1 MΩ  
GND  
1
16  
VCC  
VINP  
VINN  
IP+ ACS37800  
I2C  
Only  
2
3
15  
14  
13  
12  
11  
10  
9
IP+  
IP+  
IP+  
IP-  
IP-  
IP-  
IP-  
RPULLUP  
GND  
To User  
4
5
6
7
8
VCC  
IP  
RPULLUP  
SDA / MISO  
SCL / SCLK  
DIO_0 / MOSI  
DIO_1 / CS  
CB Certificate Number:  
US-32210-M1-UL  
US-36315-UL  
Linear  
Regulator  
Single Output  
Isolated Power  
Supply  
(Flyꢀack, etc.)  
Figure 1: Typical Application  
ACS37800-DS  
MCO-0001004  
November 30, 2020  

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