bq51013 Receiver Circuit Restarts

Posted on Feb 7, 2014

I have built several boards using the bq51013 EVM receiver circuit and a TPS61085 boost converter circuit(designed in SwitcherPRO Design Software) to increase the voltage level to 5. 7Volts. The problem that is that when a load of 580mA(required by end application of the circuit) is connected the system begins to restart again and again and continue

bq51013 Receiver Circuit Restarts
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s as long as the load is attached. the boost converter draws 780mA of current during this state. What could be the possible reason for the circuit for not being able to deliver the required load current. And how can it be fixed. Schematic of the circuit(W C R. jpg) has been attached for reference. To narrow the problem down I would recommend disconnecting the boost converter and test the wireless power 5V RX with a resistive load to determine if it can provide 1. 0A at 5V without problems. The boost converter was disconnected and then a resistive load of 850mA was connected to the 5V output of the receiver, it worked just fine. The maximum current which boost drains at start-up was recorded at 800mA. Also since the receiver chip has current limit function so it will limit the current when pulled beyond its limit setting, it should not shutdown or should it Yes ”the RX will communicate with the TX using load modulation and changes in the output load look the same. But the TX only has to receive a valid communication packet every 1. 2sec to continue power transfer. The packets are sent every 250mS. All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and...

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