Parameter Meaning and notes
SYS_ChipHighTempThr
Chip core temperature. When the temperature rises above the set threshold, power
transfer is stopped and cannot be resumed until the temperature drops. When triggered,
the red LED is turned ON. The value is in °C.
SYS_ChipVeryHighTempThr Chip core temperature. When this threshold is reached, the chip resets. The value is in °C.
OverLoad_Thr
Input power overload protection in Watts. If the threshold is exceeded, the power transfer
is stopped.
OverCurrent_Hysteresis
This variable sets hysteresis for overcurrent protection. The Over-Current limitation is
released only after the current drops below the Over-Current threshold by the set amount.
Value in mA.
Dcdc_EfficiencyResc
Measured/estimated DCDC boost circuit efficiency used for Over-Current and Over-Load
computation. The value is set as an inverse of the efficiency value, scaled to a 128 range.
Example: 90% efficiency results in a value of 142 (128/142 = 0.9).
RingVLimiterThr
Threshold for Ring voltage limiter. When the ring voltage exceeds the set threshold, the
RING V LIMITER is activated, causing positive CEPs to be ignored.
These values are not set in mV, but in raw Ring Voltage ADC values. To tune, use values
reported in traces.
Ovp_CurrentDropThr
Threshold in raw value of Coil current ADC. Protects against Rx suddenly remove and
replace under high load conditions. If this threshold is reached,
SYS_EVENT_RESTART_FOR_OVER_VOLTAGE event will be triggered, and power
transfer will reset.
DisableFeature
Bit encoded register. Each bit disables a corresponding feature, used for testing and
debugging.
(1)
0x0001 - BIT_DISABLEFEATURE_QFOD
0x0002 - BIT_DISABLEFEATURE_FOD_DURING_NEGOTIATION
0x0004 - BIT_DISABLEFEATURE_FOD_DURING_POWER
0x0008 - BIT_DISABLEFEATURE_OVP
0x0020 - BIT_DISABLEFEATURE_CONNECTED_LOAD
0x0040 - BIT_DISABLEFEATURE_VIN_DROP
0x0080 - BIT_DISABLEFEATURE_OVER_CURRENT
0x0100 - BIT_DISABLEFEATURE_OVER_LOAD
0x0200 - BIT_DISABLEFEATURE_OVER_TEMPERATURE
0x0400 - BIT_PRESDET_BYPASS
0x0800 - BIT_PRESDET_STANDALONE
0x1000 - BIT_QFACTORMEAS_STANDALONE
0x2000 - BIT_DISABLEFEATURE_FSK
0x4000 - BIT_DISABLEFEATURE_PP
DisableFeature_2
Bit encoded register. Each bit disables a corresponding feature, used for testing and
debugging.
(1)
0x0001 - BIT_DISABLEFEATURE_CHIP_OVER_TEMPERATURE
0x0002 - BIT_DISABLEFEATURE_RING_V_LIMITER
OptionBits_1
0x0004 - APP_EXT_CFG_FORCE_VIN_12V
0x0040 - APP_EXT_CFG_DISABLE_DCDC_SHORT
0x1000 - APP_EXT_CFG_ENABLE_CUST_LED
0x2000 - APP_EXT_CFG_ENABLE_DYN_OVP_PLUS
1. The usage of the default value is recommended, unless discussed with ST support.
UM3286
Graphical user interface (GUI)
UM3286 - Rev 1
page 39/84
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