Electronics News
Archive : 6 September 2026 год
Nisshinbo Micro Devices has introduced the NB7400, a high-precision secondary protection IC designed for 2- to 4-cell lithium-ion and lithium-polymer battery packs. The device provides an independent safety layer that detects overcharge conditions and can permanently interrupt the charging path via an external fuse when primary protection fails.
Nisshinbo NB7400 high-precision secondary protection IC for multicell batteries
Key Technical Specifications
- Supported cells: 2 to 4 series Li-ion / Li-polymer cells
- Maximum input voltage: 32 V
- Overcharge detection range: programmable from 4.20 V to 4.85 V
- Detection accuracy: ±20 mV
- Selectable delay times to prevent false triggering from noise
- Operating current: typically 2.5 µA (normal mode)
- Shutdown current: as low as 0.2 µA
- Integrated voltage regulator: 1.5 V to 3.3 V output with ±2% accuracy
- Package: compact DFN(PL)2020-8-GH
The NB7400 uses high-voltage-tolerant process technology and high-accuracy cell voltage monitoring. When an overcharge condition is detected, it activates an external fuse to permanently disconnect the charging path, providing an additional safety barrier for battery packs.
Target Applications
- Power tools
- Power banks and portable chargers
- Drones and UAVs
- Other multicell lithium battery-powered devices
With its combination of high precision, ultra-low power consumption and integrated regulation, the NB7400 helps designers improve battery safety while reducing component count in compact designs.
Source: Electronics For You
Efficient Power Conversion (EPC) has launched the EPC23100 family of integrated GaN ePower Stages designed for high-performance motor drive applications. The devices combine high-side and low-side GaN FETs, gate drivers, level-shifting circuitry and protection features in a compact package, significantly simplifying design and reducing component count.
EPC23100 family — 100 V integrated GaN ePower Stage for motor drives
Key Technical Specifications
- Family members: EPC23100, EPC23106, EPC23110, EPC23111
- Voltage rating: 100 V
- Current capability: up to 35 A / 20 A (depending on device)
- Integration: high-side + low-side GaN FETs, gate drivers and level-shifting circuitry
- Duty cycle: continuous operation at 100%
- Protection features:
- Fast fault shutdown
- Safe gate control under power-loss conditions
- Built-in sensing and protection
- Compact package optimized for high power density
By integrating the complete power stage into a single device, the EPC23100 family reduces board space, lowers switching losses and improves thermal performance compared to discrete GaN implementations.
Target Applications
- High-performance BLDC and PMSM motor drives
- Industrial automation and servo systems
- Robotics and precision motion control
- Compact high-efficiency motor controllers
The integrated GaN solution helps engineers achieve higher efficiency, better power density and faster time-to-market in next-generation motor drive designs.
Source: Electronics For You