Power Profiler
Power profiling and power optimization of embedded solutions
Power Profiler Kit II (PPK2)
The Power Profiler Kit II is a standalone unit for measuring and optionally supplying all Nordic development boards and additional hardware. It enables easy and affordable power measurements for wireless product development on all Nordic DKs, in addition to aforementioned external hardware. The current supply ranges from all the way down to a few µA to up to 1 A. It supports an ampere meter mode as well as a source mode. For the ampere meter mode an external power supply needs to provide VCC levels between 0.8 V and 5.0 V to the device under test (DUT). In source mode, the PPK2 supplies levels between 0.8 V and 5.0 V, while the on-board regulator provides currents up to 1 A to the external devices. Thus it is possible to measure small sleep currents, higher active current levels and short current peaks on all Nordic DKs, as well as on external devices. In this regard, both the different protocols supported, such as Bluetooth® LE, Bluetooth® mesh, Thread, Zigbee, 2.4GHZ proprietary, etc. Applications of the nRF52 and nRF53 series and the cellular IoT applications of the nRF91 Series are supported. The PPK2 has an advanced analog measurement unit with a high dynamic measurement range. This allows accurate power consumption measurements for the entire range typically seen in low-power embedded applications, all the way from single μAs to 1 A. The resolution varies between 100 nA and 1mA depending on the measurement range and is high enough to detect small spikes as often seen in low power optimized systems. By using digital inputs as a low-end logic analyser, it is possible to enable code-synchronized measurements, as well.
Key Features
- Current measuring range between 200 nA and 1 A
- Measurement resolution between 100 nA and 1 mA
- Ampere meter mode and source mode
- Source mode includes a built-in programmable regulator with an output range between 0.8 V and 5.0 V and output currents of up to 1 A
- 100 ksps sampling rate
- 8 digital inputs for low-end logic analyser support
- Power Profiler app in the nRF Connect for Desktop
Applications
- Power debugging of embedded applications
- Estimation of battery lifetime of completed application
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