STARTUP BOOT CYCLE TESTING OF A MOBILE DEVICE AT DIMINISHED POWER SUPPLY CURRENT
First Claim
1. A startup boot cycle test system for testing a mobile multi-function device under test (DUT) that has a power manager and a main system processor, comprising:
- an external power source to provide an input current to the power manager of the mobile multi-function DUT, wherein the power manager is to then provide a boot current, drawn from the input current, to the main system processor; and
a tester device to cause a margin current to be drawn from the power manager so as to diminish the boot current that is being provided to the main system processor, the tester device to then determine if the main system processor successfully boots using the diminished boot current.
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Abstract
A startup boot cycle test system for testing a mobile multi-function device under test (DUT) that has a power manager and a main system processor is described. The system includes an external power source and a tester device. The external power source provides an input current to the power manager, which in turn provides a boot current, drawn from the input current, to the main system processor. The tester device connects to a test point in the DUT using a contact test probe to draw a margin current from the boot current. The resulting diminished boot current is used by the processor to boot. The tester device detects whether the processor successfully boots using the diminished boot current using a data input connector connected between the DUT and tester device. Other embodiments are also described and claimed.
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Citations
21 Claims
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1. A startup boot cycle test system for testing a mobile multi-function device under test (DUT) that has a power manager and a main system processor, comprising:
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an external power source to provide an input current to the power manager of the mobile multi-function DUT, wherein the power manager is to then provide a boot current, drawn from the input current, to the main system processor; and a tester device to cause a margin current to be drawn from the power manager so as to diminish the boot current that is being provided to the main system processor, the tester device to then determine if the main system processor successfully boots using the diminished boot current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for testing a processor in a mobile device under test (DUT), comprising:
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providing, by an external power source, an input current to a power manager of the mobile DUT; providing, by the power manager, a boot current, drawn from the input current, to the processor; drawing, by a tester device, a margin current from the power manager so as to diminish the boot current provided to the processor; and detecting, by the tester device, whether the processor successfully booted using the diminished boot current. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A tester device for testing a mobile device, comprising:
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a test probe for coupling to a test point of the mobile device; a current source for sinking current from a system processor of the mobile device through the test point; and a boot monitor for detecting a successful boot by the system processor. - View Dependent Claims (18, 19, 20, 21)
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Specification