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MAX20846

更新时间： 2024-04-09 18:59:27
品牌 Logo 应用领域
亚德诺 - ADI 驱动驱动器
页数 文件大小 规格书
2页 247K
描述
智能功率级（FET和FET驱动器）

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MAX20846 数据手册

 浏览型号MAX20846的Datasheet PDF文件第2页 
4x6 Smart Power-Stage IC with Integrated  
LDO, Current, and Temperature Sensors  
MAX20846  
General Description  
Benefits and Features  
The MAX20846 is a feature-rich, smart power-stage IC  
designed to work with Analog Devices’ controllers to  
implement a high-density multiphase voltage regulator.  
Multiple smart power-stage ICs plus a controller provide  
a compact synchronous buck converter that includes  
accurate individual phase current and temperature  
reporting through PMBus™. These smart power-stage  
•
Space-Optimized Solution  
• Monolithic, Smart Power Stage  
• Phase-Current Steering for Thermal Balance  
2
• Small Footprint: 24mm  
•
96.1% Peak Efficiency  
• 6-Phase, 400kHz, 12V V , 1.8V V  
IN OUT  
•
•
300kHz to 1.3MHz Switching Frequency  
Telemetry and Fault Reporting through Controller IC  
PMBus  
• Accurate Temperature Monitoring and Reporting  
• Accurate Per-Phase Current Reporting  
• Fault_ID Indicates Parallel Phase Fault Type  
devices  
include  
fault-protection  
circuits  
for  
overtemperature, VX short, I/O open/short, supply  
undervoltage lockout (UVLO), and main power-supply  
overvoltage lockout (OVLO). The MAX20846  
immediately shuts down on fault detection,  
communicating the Fault_ID to the controller.  
•
Advanced Self-Protection Features*  
• Supply and Boost UVLO Protection  
• Input Supply OVLO Protection  
Monolithic integration and advanced packaging  
technology allow high-switching frequencies with  
significantly  
lower  
losses  
than  
conventional  
• Boost Refresh  
implementations. Phase shedding and discontinuous  
conduction modes (DCM) optimize efficiency over a  
wide range of load currents. The MAX20846 integrates  
an internal LDO simplifying bias generation for  
applications that do not have 1.8V available.  
• VX Short and Overtemperature Shutdown  
• VX Open and Short Detection at Power-Up  
• Fast Overcurrent Protection  
• Inductor Saturation Protection  
• Open/Short Pin Detection During Startup  
*Protection features vary with different part variants.  
The MAX20846 is available in a 4mm x 6mm, 34-pin  
FC2QFN package.  
Applications  
Ordering Information appears at the end of data  
sheet.  
•
High-Current Multiphase-Voltage Regulators  
• VR13, VR13.HC, and VR14 CPU and Memory  
• Networking ASICs  
PMBus is a trademark of SMIF, Inc.  
• AI and Machine Learning ASICs  
• Graphics Processors  
•
•
Servers, Workstations, and Enterprise Storage  
Communications and Networking Equipment  
Electrical and Thermal Ratings  
CURRENT  
RATING*  
(A)  
INPUT  
VOLTAGE VOLTAGE  
OUTPUT  
Typical Operating Circuit  
DESCRIPTION  
(V)  
(V)  
3.3V  
OR 5V  
Electrical  
Rating**  
LDO_IN  
V
V
IN  
DDH  
104.5  
4.5 to 16  
0.25 to 5.8  
1.8V  
V
, V  
CC DD  
BST  
Thermal Rating  
44  
47  
12  
12  
1.8  
1.0  
MAX20846  
T
= +55°C,  
A
PH  
VX  
PWM  
V
OUT  
200LFM  
*T = +125°C.  
ISENSE  
J
TS/FAULT  
SEL/VX_FAULT  
V
SS  
**Maximum-phase DC current limited by POCP and  
FASTPOCP_R typical value. Maximum output voltage  
requires V  
> V + 2.2V.  
DDH  
OUT  
19-101639; Rev 0; 6/23  
© 2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
12

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