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ISL95521

更新时间： 2024-09-27 14:58:27
品牌 Logo 应用领域
瑞萨 - RENESAS 电池
页数 文件大小 规格书
2页 171K
描述
Hybrid Power Boost and Narrow VDC Configurations Combination Battery Charger with SMBus Interface

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ISL95521 数据手册

 浏览型号ISL95521的Datasheet PDF文件第2页 
DATA SHORT  
ISL95521  
FN8771  
Rev 2.00  
Jul.18.19  
Hybrid Power Boost (HPB) and Narrow VDC (NVDC) Configurations Combo  
Battery Charger with SMBus Interface  
The ISL95521 is a highly versatile combo battery charger  
Features  
configurable for operating as either a Hybrid Power Boost  
• Configurable as an HPB charger or NVDC charger  
(HPB) charger or a Narrow VDC (NVDC) charger, supporting 2-,  
3-, or 4-cell batteries. Both configurations allow the battery to  
work with the adapter together to supply the system load when  
it exceeds the adapter capability, referred to as system Turbo  
mode. The HPB charger configuration reverse-boosts battery  
energy to the system bus to help the adapter provide system  
power in Turbo mode. The NVDC charger configuration quickly  
turns on BGATE to enable the battery to help the adapter  
provide system power in Turbo mode.  
• Compliant with Intel PROCHOT# and PSYS requirements  
• Adapter current monitor and battery discharging current  
monitor  
• Uses NFET for all the switches  
- Supports battery removal during battery learn mode  
- Actively controlled inrush current to prevent FET damage  
• SMBus programmable settings and high accuracy  
• Comprehensive protection features;  
The ISL95521 uses N-channel MOSFETs (NFETs) for all the  
switches to achieve the best performance and lowest BOM  
cost. The internal charge pump is capable of turning on all the  
NFETs fast or slow depending on the circumstance or the need.  
The ability to quickly turn on NFETs prevents system bus  
voltage drop when the battery is suddenly removed in Turbo  
mode or in battery learn mode.  
- PROCHOT# indicator for system low voltage, adapter  
overcurrent, battery overcurrent, and system overheating  
- Hardware-based adapter current and battery current  
limits  
- Supports sudden battery removal in system Turbo mode  
The ISL95521 provides many protection features including a  
PROCHOT# indicator for system low voltage, adapter  
overcurrent, battery overcurrent or overheating, with an array  
of SMBus programmable parameters for maximum flexibility.  
The ISL95521 also features hardware based adapter current  
limit and battery-current limit in addition to SMBus  
programmable limits.  
• 16 switching frequency options from 350kHz to 1MHz  
• Low quiescent current  
2
• SMBus and auto-increment I C compatible  
• Robust Ripple Regulator (R3) modulation scheme provides  
excellent light-load efficiency and fast dynamic response  
• 32 Ld 4mmx4mm QFN package  
• Pb-free (RoHS compliant)  
The ISL95521 provides high accuracy adapter current monitor,  
battery current monitor, and system power monitor outputs. To  
provide maximum flexibility for working with high power and  
low power systems, the ISL95521 provides several  
configurable current-sense resistor value options to achieve  
the best trade-off of current sensing accuracy vs power loss.  
Applications  
• Devices with rechargeable 2-, 3-, or 4-cell batteries  
Related Literature  
• ISL95521 device page  
The ISL95521 uses the Renesas Robust Ripple Regulator  
(R3™) modulation scheme to provide excellent light-load  
efficiency and fast dynamic response. The ISL95521 is  
available in a 32 Ld 4mmx4mm QFN package.  
AFET  
SFET  
AFET  
SFET  
VADP  
VADP  
VSYS  
SYSTEM  
VSYS  
SYSTEM  
ADAPTER  
ADAPTER  
ASGATE CMSRC  
UGATE  
BFET  
ASGATE CMSRC  
UGATE  
Q1  
Q2  
Q1  
Q2  
L
BFET  
L
VBAT  
VBAT  
PHASE  
HPB  
PHASE  
NVDC  
CHARGER  
CHARGER  
LGATE  
LGATE  
PROG  
PROG  
BGATE  
VBAT  
BGATE  
VBAT  
FIGURE 1. HPB CHARGER CONFIGURATION  
FIGURE 2. NVDC CHARGER CONFIGURATION  
FN8771 Rev 2.00  
Jul.18.19  
Page 1 of 2  
12

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 		Hybrid Power Boost (HPB) and Narrow VDC (NVDC) Combo Battery Charger with SMBus Interface
ISL95521AHRZ RENESAS

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 		Hybrid Power Boost (HPB) and Narrow VDC (NVDC) Combo Battery Charger with SMBus Interface
ISL95521AHRZ-T RENESAS

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ISL95521AIRZ-T RENESAS

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 		Hybrid Power Boost (HPB) and Narrow VDC (NVDC) Combo Battery Charger with SMBus Interface
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 		Hybrid Power Boost (HPB) and Narrow VDC (NVDC) Combo Battery Charger with SMBus Interface
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