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ISL28023EVAL1Z

更新时间： 2024-11-24 01:13:51
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瑞萨 - RENESAS /
页数 文件大小 规格书
55页 3433K
描述
Precision Digital Power Monitor with Margining

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ISL28023EVAL1Z 数据手册

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DATASHEET  
ISL28023  
Precision Digital Power Monitor with Margining  
FN8389  
Rev 5.00  
March 18, 2016  
The ISL28023 is a bidirectional high-side and low-side digital  
current sense and voltage monitor with a serial interface. The  
device monitors power supply current, voltage and provides  
the digital results along with calculated power. The ISL28023  
provides tight accuracy of 0.05% for both voltage and current  
monitoring. The auxiliary input provides an additional power  
monitor function.  
Features  
• Bus voltage sense range . . . . . . . . . . . . . . . . . . . . . . 0V to 60V  
• Voltage gain error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05%  
• Current gain error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05%  
• Internal temperature sensor accuracy . . . . . . . . . . . . +1.0°C  
• High or low (RTN) side sensing  
The V power can either be externally supplied or internally  
CC  
regulated, which allows the ISL28023 to handle a  
common-mode input voltage range from 0V to 60V. The wide  
range permits the device to handle telecom, automotive and  
industrial applications with minimal external circuitry.  
• Bidirectional current sensing  
• Auxiliary low voltage channel  
• ∆∑ADC, 16-bit native resolution  
• Programmable averaging modes  
• Internal 3.3V regulator  
An 8-bit voltage DAC enables a DC/DC converter output voltage  
margining. Fault indication includes a Bus Voltage window and  
overcurrent fast fault logic indication.  
• Internal temperature sense  
• Overvoltage/undervoltage and current fault monitoring with  
500ns detection delay  
The ISL28023 serial interface is PMBus compatible and  
operates down to 1.2V voltage. It draws an average current of  
just 800µA and is available in the space saving 24 Ld QFN  
4mmx4mm package. The part operates across the full  
industrial temperature range from -40°C to +125°C.  
• 8-bit voltage output DAC  
2
• I C/SMBus/PMBus interface that handles 1.2V supply  
Applications  
• Data processing servers  
• DC power distribution  
Related Literature  
AN1955, “Design Ideas for Intersil Digital Power Monitors”  
• Telecom equipment  
• Portable communication equipment  
• DC/DC, AC/DC converters  
AN1932, “ISL28023 Precision Digital Power Monitor  
Evaluation Kit”  
2
• Many I C DAC and ADC with alert applications  
VIN = 4.5V36V  
V
IN  
RSH  
VCC  
SMBALERT1  
ISL28023  
VINP  
GND  
3.3V  
Vreg  
A0  
A1  
Ext_Temp  
Place Diode  
Near RSH  
VINM  
A2  
ADC  
16-Bit  
Phase  
VBUS  
VIN  
SCL  
AUXP  
Lo  
SDA  
ISL85415  
AUXMmp  
0.1µF  
PMBus  
REG  
MAP  
BOOT  
R2  
SMBALERT2  
I2CVCC  
AUXV  
DAC OUT  
R1  
Temp  
Sense  
8-Bit  
DAC  
FB  
En  
PG  
R3  
To SMBAlert1  
GPIO/Int  
VIN  
VOUT = 0.6 +  
(0.6 – DAC OUT)  
* R2/R1  
SCL  
SDA  
MCU  
GPIO  
FIGURE 1. APPLICATION DIAGRAM  
FN8389 Rev 5.00  
March 18, 2016  
Page 1 of 55  
1234567...55

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