BD9G341AEFJ
MOSFET內建1ch降壓開關穩壓器
BD9G341AEFJ
MOSFET內建1ch降壓開關穩壓器
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Description
BD9G341AEFJ是內建對應76V高輸入電壓的功率MOSFET的降壓1ch開關穩壓器。內建80V耐壓3.5A額定、導通電阻150mΩ的功率MOSFET。還通過電流模式控制方式，實現了高速暫態響應和簡便的相位補償設定。頻率在50kHz ～ 750kHz的範圍內可變，內建低電壓誤動作防止電路、過電流保護電路等保護功能。此外，可通過高精度的EN引腳閾值進行低電壓鎖定，及使用外接電阻設定遲滯。
Product Detail
Specifications
ch
1
Integrated FET / Controller
Integrated FET
Topology
Buck
Synchronous / Nonsynchronous
Non-synchronous
Vin1(Min.)[V]
12
Vin1(Max.)[V]
76
Vout1(Min.)[V]
1
Vout1(Max.)[V]
76
Iout1(Max.)[A]
3
SW frequency setting (Max.)[MHz]
0.75
EN
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
4.9x6.0 (t=1.0)
Features
- Wide input voltage range from 12V to 76V.
- Integrated 80V/3.5A/150mΩ NchFET.
- Current mode.
- Variable frequency from 50kHz to 750kHz.
- Accurate reference voltage (1.0V ±1.5%).
- Precision EN threshold (±3%).
- Soft-start function
- 0µA Standby current
- Over Current Protection (OCP), Under Voltage Lockout (UVLO), Thermal-Shutdown TSD), Over Voltage Protection (OVP) Thermally enhanced HTSOP-J8 package
Reference Design / Evaluation Tool
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- Evaluation Board - BD9G341AEFJ-EVK-101
This EVK is using not BD9G341AEFJ-LB, but BD9G341AEFJ. This evaluation board has been developed for ROHM’s non-synchronous buck DC/DC converter customers evaluating BD9G341AEFJ. While the BD9G341AEFJ accepts a power supply input range of 12V to 76V, and generates output voltages from 1V to Vcc, this evaluation board is setup for the same input voltage range and a fixed output of 5V can be produced.
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- Reference Design - REF68008
- Industrial 16-Cell BMS Evaluation Platform with ML5238GA AFE and ML63Q8057 MCU
This Battery Management System (BMS) platform provides detailed specifications for an industrial-grade lithium-ion battery monitoring and protection solution. It is designed to support reliable operation in demanding industrial energy storage and power backup applications.
The BMS evaluation platform serves as a reference design for assessing a multi-cell battery monitoring system utilizing ROHM’s ML5238 16-cell Analog Front End (AFE) in combination with the LAPIS ML63Q8057 microcontroller. The system enables accurate cell voltage measurement, current sensing, temperature monitoring, cell balancing, state-of-charge estimation, and fault detection, forming a complete solution for industrial battery packs.
This evaluation kit integrates the core functional blocks required for BMS operation, including the monitoring circuitry, control firmware, sensing interfaces, non-volatile memory, and PC communication interface. The design is optimized for robustness, measurement accuracy, and long-term reliability, making it suitable for industrial energy storage systems, uninterruptible power supplies (UPS), e-mobility auxiliary systems, and stationary battery applications.
The reference design includes comprehensive technical resources such as firmware architecture documentation, communication protocol definitions, memory maps, and configuration guidelines. It features a fully functional BMS firmware implementation optimized for industrial environments, supporting protection mechanisms, data logging, diagnostics, and seamless interfacing with a host PC or supervisory controller.
Users are encouraged to explore the advanced monitoring, protection, and diagnostic capabilities of this BMS evaluation platform and consider its integration or customization for their industrial battery management and energy storage development projects.
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