Nexperia Energy harvesting PMIC

The NEH7100BU and NEH7110BU are high-performance power management ICs (PMIC) for energy harvesting solutions in low-power applications, featuring a rich set of auxiliary features, such as storage element protection, USB charging and LDO / load switch. The NEH7110BU is configurable with hard coding, the NEH7100BU with via hard-coding or I²C. The PMICs are optimized to harvest energy from light sources (from a wide range of indoor and outdoor PV cells). Other energy sources can also be used, such as kinetic (movement, vibrations), thermal variation and electromagnetic, but might need external auxiliary components. The PMICs gather energy from a suitable harvester to charge a storage element, such as a rechargeable battery or a supercapacitor. Nexperia's advanced maximum power point tracking (MPPT) uses an embedded hill-climbing algorithm to deliver maximum power to the storage element. The MPPT is compatible with any suitable harvester, and optimizes efficiency as frequent as every second for excellent performance in rapidly changing harvesting conditions. The NEH7100BU optimizes efficiency every 0.5 seconds. The NEH7100BU and NEH7110BU are available in 28-lead, 4 mm x 4 mm HVQFN28 package.

Key features

• Harvesting power range: 15 μW to 50 mW
• Ultra-fast MPPT interval
• Battery protection features: Over-voltage protection (OVP), Low-voltage detection (LVD), Over-current protection (OCP)
• USB charging up to 200 mA
• LDO with configurable output voltage
• Configurable via hard-coding (NEH7100BU, NEH7110BU) or I²C (NEH7100BU)
• Coldstart, supporting "battery-less" design
• Small BOM with no inductor required
• Suitable for batteries, supercapacitors and hybrid capacitors

Applications

• Smart remote controls: TV, gaming, AV control, key-fob
• Wireless PC devices: keyboard, mouse, headphones
• Industrial sensors: electronic shelf label, asset tracker, beacon
• Tire pressure sensors
• Wearable devices: watch, body band and health devices