Nexperia Energy Harvesting PMIC NEH71x0
NEH71x0 - Advanced energy harvesting PMICs enabling long life, battery free electronics
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. Once connected to a suitable harvester, the devices manage the energy flow to charge a storage element like 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 0.5 seconds for excellent performance in rapidly changing harvesting conditions. The NEH7100BU and NEH7110BU are available in 28-lead, 4 mm x 4 mm HVQFN28 package.
Key features
- Chip input power range: 15 μW to 100 mW
- Efficiency up to 95%
- 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 (NEH7110) or hard-coding / I²C (NEH7100)
- 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 labels, asset trackers and beacons
- Tire pressure sensors
- Wearable devices: watch, body band and health devices
Block diagram
Product portfolio
| Part number | Storage element voltage (V) | Harvesting power range (mW) | Supported harvester | Supported storage element | Configurable | Datasheet |
|---|---|---|---|---|---|---|
| NEH7100BU | 0 to 4.5 | 0.015 to 50 | PV-cell, TEG, piezo, antenna | Lithium; Supercapacitor; Hybrid Supercapacitor | I2C; Hard-coding | Download datasheet |
| NEH7110BU | Hard-coding | Download datasheet |
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