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ISL1801EVAL1ZA

更新时间： 2024-10-03 01:15:15
品牌 Logo 应用领域
瑞萨 - RENESAS 集成电源管理电路
页数 文件大小 规格书
30页 1659K
描述
sPMIC for Micro Converter Bias and Drivers

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DATASHEET  
ISL1801  
FN8259  
Rev 1.00  
July 24, 2014  
sPMIC for Micro Converter Bias and Drivers  
The ISL1801 is a power management IC (PMIC) optimized for  
solar array micro converters and other systems operating from  
a high voltage DC supply. The ISL1801 can be used in buck,  
boost or buck-boost microconverter topologies in order to  
maximize the energy harvest from a solar array. In addition to  
the power stage and main controller, the ISL1801 includes the  
bias regulators, gate drivers, current sense amplifier and  
comparators needed for micro converters.  
Features  
• 90V input buck switching regulator  
- 120mA (minimum) output with OCP, OVP, OTP  
- Integrated upper and lower MOSFETs  
• 90V on-chip start-up 6.7V LDO  
• Low voltage buck switching regulator  
- 200mA (minimum) output with OCP, OVP  
- Integrated upper and lower MOSFETs  
- PGOOD output  
The ISL1801 integrates two switching regulators that can be  
used to generate the driver and the micro-controller (MCU)  
power supplies. In addition, it has a low offset, low drift  
amplifier for current sensing, two comparators for overvoltage  
and overcurrent protection plus a watchdog timer to reset the  
MCU if necessary. This single IC solution offers high integration  
and dramatically reduces the total number of components in  
the microconverter system improving the system reliability and  
reducing cost.  
• Low voltage bias LDO  
- Input voltage range from 6V to 14V  
- Regulated 5V output up to 10mA  
• Dual high-speed gate driver  
- 14V voltage rating  
The first regulator takes input voltages ranging from 9V to 90V  
from the solar panel and outputs a regulated supply for drivers  
and the secondary regulator. The secondary regulator converts  
the output of the first regulator to a programmable  
micro-controller supply, typically 3.3V. A high voltage start-up  
LDO provides the necessary bias voltage until the switching  
regulator is operating.  
- 2A peak sourcing and 5A peak sinking current  
- Peak current limit for DRIVE3  
• Dedicated amplifier for accurate current sense  
• Two comparators for general purpose protection  
• Integrated watchdog timer  
The ISL1801 integrates two high-speed MOSFET drivers for  
buck, flyback or boost converters configured as shown in the  
application schematics. The Drive3 also has the integrated  
peak current limiting capabilities.  
Applications  
• Solar power optimizer  
• Solar power micro-inverter  
• Solar charge controller  
• Telecom power supply  
The ISL1801 includes comprehensive start-up, shutdown and  
fault logic to ensure reliable operation of micro converters in  
solar applications.  
PV MODULE  
SENSE  
V
+
V
+
OUT  
IN  
V
-
OUT  
ISL1801  
3.3V  
CONTROL  
PROCESSOR AND/OR  
COMMUNICATIONS  
FIGURE 1. TYPICAL APPLICATION  
FN8259 Rev 1.00  
July 24, 2014  
Page 1 of 30  
1234567...30

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