Texas Instruments TPS54383, Руководство пользователя

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3.1 Sequencing Jump (JP3)
The TPS54383EVM provides a 3-pin, 100-mil header and shunt for programming the TPS54383’s sequencing
function. Placing the JP3 shunt in the left position connects the sequence pin to BP and sets the TPS54383
controller to sequence Channel 2 prior to Channel 1 when Enable 2 is activated. Placing the JP3 shunt in the
right position connects the sequence pin to GND and sets the TPS54383 converter to sequence Channel 1 prior
to Channel 1 when Enable 1 is activated. Removing the JP3 shunt disables sequencing and allows Channel 1
and Channel 2 to be enabled independently.
3.2 Enable Jumpers (JP1 and JP2)
TPS54383EVM provides separate 3-pin, 100-mil headers and shunts for exercising the TPS54383 Enable
functions. When JP3 is removed placing the JP1 shunt in the left position connects EN1 to ground and turns on
Output 1 and placing the JP2 shunt in the left position connects EN2 to ground and turns on Output 2.
When the JP3 shunt is in the LEFT position, placing the JP2 shunt in the left position connects EN2 to ground
and turns on first Output 2 and then Output 1.
When the JP3 shunt is in the RIGHT position, placing the JP1 shunt in the left position connects EN1 to ground
and turns on first Output 1 and then Output 2.
3.3 Test Point Descriptions
Table 3-1. Test Point Descriptions
Test Point Lable Use Section
TP1 VIN Monitor input voltage Section 3.3.1
TP2 GND Ground for input voltage Section 3.3.1
TP3 VOUT1 Monitor VOUT1 Voltage Section 3.3.2
TP4 GND Ground for VOUT1 voltage Section 3.3.2
TP5 GND Ground for Channel B loop monitoring Section 3.3.3
TP6 CHB Channel B for loop monitoring Section 3.3.3
TP7 GND Ground for Channel A loop monitoring Section 3.3.3
TP8 CHA Channel A for loop monitoring Section 3.3.3
TP9 SW1 Monitor switching node of Channel 1 Section 3.3.4
TP10 GND Ground for switch node of Channel 1 Section 3.3.4
TP11 IC_GND Monitor device ground Section 3.3.5
TP12 SW2 Monitor switching node of Channel 2 Section 3.3.6
TP13 GND Ground for switch node of Channel 2 Section 3.3.6
TP14 CHA Channel A for loop monitoring Section 3.3.7
TP15 GND Ground for Channel A loop monitoring Section 3.3.7
TP16 CHB Channel B for loop monitoring Section 3.3.7
TP17 GND Ground for Channel B loop monitoring Section 3.3.7
TP18 VOUT2 Monitor VOUT2 voltage Section 3.3.8
TP19 GND Ground for VOUT2 voltage Section 3.3.8
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6 TPS54383 Step-Down Converter Evaluation Module User's Guide SLUU285D – JULY 2007 – REVISED OCTOBER 2021
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