SLUUBH3A November 2016 – February 2022 TPS546C20A
The TPS546C20A on this EVM leave the factory pre-configured. See Table 5-1 for a short list of key factory configuration parameters as obtained from the configuration file.
ADDRESS HEX | ADDRESS DEC | PART ID | DESIGNATOR | ||
---|---|---|---|---|---|
0x44 | 36 | TPS546C20A | U1 | ||
0x44 | 37 | TPS546C20A | U2 | ||
GENERAL | |||||
CMD Code | CMD CODE HEX |
ENCODED HEX | DECODED | COMMENTS | |
VIN_OFF | 0x36 | 0xF010 | 4.0 V | Turn OFF voltage | |
VIN_ON | 0x35 | 0xF012 | 4.5 V | Turn ON voltage | |
IOUT_CAL_OFFSET | 0x39 | 0xE000 | 0.0000 A | Current offset for PMBUS readout | |
IOUT_OC_FAULT_LIMIT | 0x46 | 0xF854 | 42 A | OC fault level | |
IOUT_OC_FAULT_RESPONSE | 0x47 | 0xFF | Restart | Response to OC fault | |
IOUT_OC_WARN_LIMIT | 0x4A | 0xF84A | 37 A | OC warning level | |
VOUT_COMMAND | 0x21 | 0x0133 | 0.6 V | Reference voltage | |
VOUT_MIN | 0x2B | 00B3h | 0.35V | Minimum reference voltage | |
VOUT_MAX | 0x24 | 0x034D | 1.65 V | maximum reference voltage | |
VOUT_TRANSITION_RATE | 0x27 | 0xD03C | 1 mV/us | Vout transition rate | |
VOUT_SCALE_LOOP | 0x29 | 0xF004 | 1 | Output sense scaling ratio for main control loop | |
PCT_OV_UV_WRN_FLT_LIMITS | 0xD6 | 0x00 | UV FAULT | 83% | Output OV/UV settings, reference to nominal reference voltage |
UV WARN | 88% | ||||
OV WARN | 112% | ||||
OV FAULT | 117% | ||||
VOUT_OV_FAULT_RESPONSE | 0x41 | 0xBF | Restart | Output overvoltage fault response | |
VOUT_UV_FAULT_RESPONSE | 0x45 | 0xBF | Restart | Output undervoltage fault response | |
ON_OFF_CONFIG | 0x02 | 0x16 | CNTL only, Active High. | Control signal and operation command | |
OPERATION | 0x01 | 0x00 | Operation is not used to enable regulation | Can be used to control device On/Off | |
OT_FAULT_LIMIT | 0x4F | 0x0091 | 145°C | OT fault level | |
OT_WARN_LIMIT | 0x51 | 0x0078 | 120°C | OT warn level | |
OT_FAULT_RESPONSE | 0x50 | 0x3F | Ignore | Response to over temperature faults | |
TON_DELAY | 0x60 | 0x0000 | 0 ms | Turn-on delay | |
TON_RISE | 0x61 | 0x0003 | 3 ms | Soft-start time | |
TON_MAX_FAULT_LIMIT | 0x62 | 0x0000 | Disabled | Upper limit for Vout reaching regulation | |
TOFF_DELAY | 0x64 | 0x0000 | 0 ms | Turn-off delay | |
TOFF_FALL | 0x65 | 0x0000 | 0 ms | Soft-stop fall time |
If it is desired to configure the EVM to settings other than the factory settings shown above, the TI Fusion Digital Power Designer software can be used for reconfiguration. It is necessary to have input voltage applied to the EVM prior to launching the software so that the TPS546C20A can respond to the GUI and the GUI can recognize the device. The default configuration for the EVM is to start converting at an input voltage of 4.5 V, therefore, to avoid any converter activity during configuration, an input voltage less than 4.5 V should be applied. An input voltage of 4 V is recommended.