Datasheet

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3.1 Sequencing Jump (JP3)
3.2 Enable Jumpers (JP1 and JP2)
3.3 Test Point Descriptions
Schematic
The TPS54386EVM provides a 3-pin, 100-mil header and shunt for programming the TPS54386’s
sequencing function. Placing the JP3 shunt in the left position connects the sequence pin to BP and sets
the TPS54386 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 TPS54386 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.
TPS54386EVM provides separate 3-pin, 100-mil headers and shunts for exercising the TPS54386 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.
Table 2. 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
6 A 12-V Input, 5.0-V and 3.3-V Output, 2-A Non-Synchronous Buck Converter SLUU286 – March 2008
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