NXP Semiconductors KIT-TPLSNIFEVB, User Manual, Page: 10 / 14

NXP Semiconductors
UM11650
KIT-TPLSNIFEVB tool
Figure 8. Saleae Logic Analyzer
Saleae provides a software interface with its product to help decode the acquired signals.
To learn more, visit the Saleae website .
As a plug-in to the Saleae software interface, a DLL has been developed to decode TPL
frames. Go to http://www.nxp.com/KIT-TPLSNIFEVB for more details.
5.2.2 Powering the TPL sniffer
The TPL sniffer can be powered through the USB Micro-B connector (J4, labeled PWR)
by a 5.0 V source with 50 mA (average) and 150 mA (peak), typically a USB power bank
or a USB cable connected to a computer.
5.2.2.1 Power bank keep-alive function
The purpose of the keep-alive feature is to avoid the activation of the automatic shutdown
feature found on most consumer USB power banks. Such a shutdown would likely
occur due to the limited power consumption of the TPL sniffer circuit alone, in the 10
mA to 20 mA range. Therefore, the sniffer activates an additional 150 mA of internal
power consumption with a period of 5.8 seconds and a duty cycle of 20 % (all figures are
approximate). This simulates a load large enough to keep most power banks energized.
If the power-on LED indicator goes out shortly after the TPL sniffer is first powered up
with a power bank, consider trying another power bank model.
6 Hardware specifications
Description Value
Power supply voltage 5.0 V (± 10 %)
Power consumption < 50 mA (averaged over 20 seconds)
Table 2. Electrical characteristics
UM11650 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 1 — 4 August 2021
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