Using PPK to measure high-side current consumption of a battery-powered devicehttps://devzone.nordicsemi.com/f/nordic-q-a/73883/using-ppk-to-measure-high-side-current-consumption-of-a-battery-powered-deviceDear, We would like to have a setup where we want to measure the current consumption of a battery-powered device with an NRF-52840 chip: The battery is a Li-Ion one with a capacity of 60mAh. We can do both high and low-side current measurementsen-USTelligent Community 13Thu, 15 Apr 2021 07:46:48 GMTRE: Using PPK to measure high-side current consumption of a battery-powered devicehttps://devzone.nordicsemi.com/thread/304991?ContentTypeID=1Thu, 15 Apr 2021 07:46:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4e2db4cc-8f6f-45b3-9ca9-2520ed17f823tmeeusen<p>Thank you all, that worked out nicely!&nbsp;</p> <p>Kind regards,&nbsp;<br />Tom&nbsp;</p><div style="clear:both;"></div>RE: Using PPK to measure high-side current consumption of a battery-powered devicehttps://devzone.nordicsemi.com/thread/304887?ContentTypeID=1Wed, 14 Apr 2021 14:57:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:68d58973-2938-4891-a93e-b3c30fe49121helsing<p>Thank you Hugh.</p> <p>Tom, let us know if you need any more details on how to set things up.</p><div style="clear:both;"></div>RE: Using PPK to measure high-side current consumption of a battery-powered devicehttps://devzone.nordicsemi.com/thread/304668?ContentTypeID=1Tue, 13 Apr 2021 18:21:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6c558aa1-7fa7-46e2-bbd9-3139ca0bd0e2hmolesworth<p>This shows how to measure, assuming I understand your question. With a common Gnd, insert the PPK2 between the battery high-side and the circuit thus:</p> <p><pre class="ui-code" data-mode="c_cpp">// Resistor Rc for current sense is 1k0 in parallel with onr or more of 110R, 11R0, 1R0 and 0R051 // // &lt;- +ve Supply to DUT From VOUT External Battery +ve To VIN // +------------------------------+ +-----------------------+ // | | | | // | +---------+ | | +---------+ | // | | GND | | VOUT VIN | | GND -ve | | // +=========O=========+ | +====O=====O=============================O=====O====+ | | Battery // | Vdd (+) | | | | #----+ | | | | | + 3 volts // | | | | | | |Rc AMPERE \ | | | | +-O-+ // | | | | | | +++ \ | | | | | | // | | | | | | | | +-----------O O----# | | | | | // | Device Under Test | | | | | | | | | | | | | | // | DUT | | | | 120k| | | | |120k | | | | | // | | | | | +++ +++ | \ SOURCE +++ | | | | | // | | | | | | | | | \ | | | | | +-O-+ // | | | | | | | +----#--O O-- PPK LDO | | | | | | Gnd (-) // | | | | | | | | | | | +-------+ // | | | | | +++ +++ | | // | | | | | | | | | // | | | | | #-- VDUT VIN --# | | // | | | | | | Sense Sense | | | // | | | | | +++ +++ | | // | | | | | | | | | | | // | | | | | | | | | | | // | | | | | | | | | | | // | | | | | +++ +++ | | // | | | | | | 30k 30k | | | // | | | | +--#--+ +--#--+ | // | | | | | | | // | | | | ===== &lt;&lt;== Common Gnd ==&gt;&gt; ===== | // | | | | === (Common -ve) === | // | Gnd (-) | | | = = | // +=========O=========+ | +===================================================+ // | | PPK-II // +--------------+</pre></p> <p>Remember to turn on the slider on the App after setting Ampere Mode - see my notes&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/70143/ppk-2-not-passing-through-external-power-in-amp-mode/287586#287586">ppk-2-not-passing-through-external-power-in-amp-mode</a></p><div style="clear:both;"></div>RE: Using PPK to measure high-side current consumption of a battery-powered devicehttps://devzone.nordicsemi.com/thread/304564?ContentTypeID=1Tue, 13 Apr 2021 13:19:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c6b383bd-1d81-4db7-a904-a8f2371aea9fhelsing<p>Dear Tom,</p> <p>Yes, it believe this should be possible. I will get back to you later today or tomorrow with details.</p> <p>Best regards,</p> <p>Håkon</p><div style="clear:both;"></div>