Texas Instruments TPS2456 Dual 12V Protection and Blocking ORing Controller Evaluation Module TPS2456EVM TPS2456EVM Hoja De Datos
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TPS2456EVM
Connector and Jumper Description
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Connector and Jumper Description
J1
Channel A positive input supply voltage
J2
Channel A hot swap positive output voltage
J3
Shorting this jumper connects a 1k
Ω
resistor across the output of Channel A. This is useful to
discharge any output capacitance on Channel A.
J4–J7
Channel A Load Capacitors. Shorting each of these jumpers will add 220µF of capacitance
across the output of the board. A total of 880µF can be placed across the output using these
four jumpers.
across the output of the board. A total of 880µF can be placed across the output using these
four jumpers.
J8
Channel A input supply voltage return (ground).
J9
Channel A output voltage return (ground)
J10
Current limit selection. Jumping pin 1 to pin 2 (EACH) sets the current limit of each channel to
8.36A. This could provide a total of 16.72A of current to the load if there is equal current
sharing between the two channels. Jumping pin 2 to pin 3 (TOTAL) sets the total maximum
current provided to the load to 8.36A.
8.36A. This could provide a total of 16.72A of current to the load if there is equal current
sharing between the two channels. Jumping pin 2 to pin 3 (TOTAL) sets the total maximum
current provided to the load to 8.36A.
J11
Channel B hot swap positive output voltage
J12
Channel B positive input supply voltage
J13
Shorting this jumper connects a 1k
Ω
resistor across the output of Channel B. This is useful to
discharge any output capacitance on Channel B.
J14–J17
Channel B Load Capacitors. Shorting each of these jumpers will add 220µF of capacitance
across the output of the board. A total of 880µF can be placed across the output using these
four jumpers
across the output of the board. A total of 880µF can be placed across the output using these
four jumpers
J18
Channel B output voltage return (ground)
J19
Channel B input supply voltage return (ground).
J20
Retry A: Shorting this jumper enables a channel retry function where the TPS2456 will attempt
to repower a Channel A after a fault has occurred. The TPS2456 will continuously retry until
the fault is removed. If the jumper is left open then the channel will be latched off when a fault
occurs.
to repower a Channel A after a fault has occurred. The TPS2456 will continuously retry until
the fault is removed. If the jumper is left open then the channel will be latched off when a fault
occurs.
J21
ENA: Shorting this jumper connects pin 31 (ENA) of the TPS2456 to ground thus disabling
Channel A of the TPS2456.
Channel A of the TPS2456.
J22
Retry B: Shorting this jumper enables a channel retry function where the TPS2456 will attempt
to repower a Channel B after a fault has occurred. The TPS2456 will continuously retry until
the fault is removed. If the jumper is left open then the channel will be latched off when a fault
occurs.
to repower a Channel B after a fault has occurred. The TPS2456 will continuously retry until
the fault is removed. If the jumper is left open then the channel will be latched off when a fault
occurs.
J23
ENB: Shorting this jumper connects pin 29 (ENB) of the TPS2456 to ground thus disabling
Channel B of the TPS2456.
Channel B of the TPS2456.
J24
ORENA: Shorting this jumper connects pin 6 (ORENA) of the TPS2456 to ground thus
disabling the OR-ing function. The board has a OR-ing transistor (Q2) installed in series with
the power path. Under normal conditions, this jumper should be left open to enable the OR-ing
transistor so current can flow to the output.
disabling the OR-ing function. The board has a OR-ing transistor (Q2) installed in series with
the power path. Under normal conditions, this jumper should be left open to enable the OR-ing
transistor so current can flow to the output.
J25
ORENB: Shorting this jumper connects pin 14 (ORENB) of the TPS2456 to ground thus
disabling the OR-ing function. The board has a OR-ing transistor (Q4) installed in series with
the power path. Under normal conditions, this jumper should be left open to enable the OR-ing
transistor so current can flow to the output.
disabling the OR-ing function. The board has a OR-ing transistor (Q4) installed in series with
the power path. Under normal conditions, this jumper should be left open to enable the OR-ing
transistor so current can flow to the output.
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TPS2456EVM
SLVU368 – March 2010
Copyright © 2010, Texas Instruments Incorporated