Texas Instruments TPS544 20 Series, Руководство пользователя

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5 EVM Configuration Using the Fusion GUI
The TPS544B20 or TPS544C20 installed 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.
Table 5-1. Key Factory Configuration Parameters
ADDRESS HEX ADDRESS DEC PART ID
0x1B 27 TPS544x20
GENERAL
CMD ID WITH PHASE CMD CODE HEX ENCODED HEX DECODED NUMERIC COMMENTS
VIN_OFF 0x36 0xF014 5.00 V 5 Turn OFF voltage
VIN_ON 0x35 0xF01C 7.00 V 7 Turn ON voltage
TPS544B20 COMMENTS
IOUT_CAL_GAIN 0x38 0x8821 1.0071 mΩ 1.0071 DCR of output inductor
IOUT_CAL_OFFSET 0x39 0xE000 0.0000 A 0 Current offset for GUI readout
IOUT_OC_FAULT_LIMIT 0x46 0xF83C 30.0 A 30 OC fault level
IOUT_OC_FAULT_RESPONSE 0x47 0x3C Restart continuously Response to OC fault
IOUT_OC_WARN_LIMIT 0x4A 0xF832 25.0 A 25 OC warning level
MFR_04 (VREF_TRIM) 0xD4 0x0000 0.000 V 0 Trim voltage
ON_OFF_CONFIG 0x02 0x02 Mode: always converting
Control signal and operation command not
required
OPERATION 0x01 0x00 Unit: immediate off; margin: none Response to turn OFF trigger
OT_FAULT_LIMIT 0x4F 0x007D 125°C 125 OT fault level
OT_WARN_LIMIT 0x51 0x0064 100°C 100 OT warn level
TON_RISE 0x61 0xE02B 2.6875 ms 2.6875 Soft-start time
TPS544C20 COMMENTS
IOUT_CAL_GAIN 0x38 0x8821 1.0071 mΩ 1.0071 DCR of output inductor
IOUT_CAL_OFFSET 0x39 0xE000 0.0000 A 0 Current offset for GUI readout
IOUT_OC_FAULT_LIMIT 0x46 0xF832 25.0 A 25 OC fault level
IOUT_OC_FAULT_RESPONSE 0x47 0x3C Restart continuously Response to OC fault
IOUT_OC_WARN_LIMIT 0x4A 0xF828 20.0 A 20 OC warning level
MFR_04 (VREF_TRIM) 0xD4 0x0000 0.000 V 0 Trim voltage
ON_OFF_CONFIG 0x02 0x02 Mode: always converting
Control signal and operation command not
required
OPERATION 0x01 0x00 Unit: immediate off; margin: none Response to turn off trigger
OT_FAULT_LIMIT 0x4F 0x007D 125°C 125 OT fault level
OT_WARN_LIMIT 0x51 0x0064 100°C 100 OT warn level
TON_RISE 0x61 0xE02B 2.6875 ms 2.6875 Soft-start time
If it is desired to configure the EVM to settings other than the factory settings shown in Table 5-1 , 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 TPS544B20 or TPS544C20 installed is active and able
to 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 must be applied. An input voltage of 4 V is recommended.
5.1 Configuration Procedure
1. Adjust the input supply to provide 4 V
DC
, current limited to 1 A.
2. Apply the input voltage to the EVM. See Figure 4-1 and Figure 4-2 for connections and test setup.
3. Launch the Fusion GUI software. See the screen shots in Section 8 for more information.
4. Configure the EVM operating parameters as desired.
EVM Configuration Using the Fusion GUI www.ti.com
10 TPS544x20 Step-Down Converter Evaluation Module User's Guide SLUUAY7B – MAY 2014 – REVISED AUGUST 2021
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