Datasheet

SLUU171A - September 2003
11
TPS2350 −48-V Hot Swap/Supply Selector Evaluation Module
2.3 TPS2350 −48-V Hot Swap/Supply Selector EVM Operating Specifications
The supply selector EVM is intended to allow some degree of user reconfiguration. This allows designers to set
up the circuit to better represent the characteristics of their target application. Potential modifications include
changing the current limit threshold, the inrush limiting, the fault timing, and load characteristics. However, under
no circumstances should the EVM kit be operated beyond the absolute maximum conditions specified in
Table 2.
Table 2. EVM Absolute Maximum Ratings
(1)
PARAMETER MIN MAX UNITS
Input voltage range, J2, J3
(2)
−100 0.3
V
Input voltage range, J6
(3)
30
V
Load current, J4 −2.25
A
Load return current, J5 2.25
A
Ambient operating temperature range −40 85 °C
NOTES: (1) Currents are positive into and negative out of the specified terminal.
(2). With respect to the PCB −48V_RTN node at J1.
(3). With respect to the VOUT− node at J5.
As supplied from the factory, the supply selector EVM is configured for operation under the following target
conditions, shown in Table 3.
Table 3. EVM Recommended Operating Conditions
(1)
PARAMETER MIN NOM MAX UNITS
Input supply voltage, J2, J3
(2)
0 −48 −80
V
Input supply voltage, J6
(3)
−1 5 20
V
Nominal load current, J4 −1
A
Nominal load return current, J5 1
A
Operating temperature range −40 85 °C
NOTES: (1). Currents are positive into and negative out of the specified terminal.
(2). With respect to the PCB −48V_RTN node at J1.
(3). With respect to the VOUT− node at J5.
3 Getting Started
3.1 Equipment Requirements
The following test equipment is required to use the TPS2350 −48-V hot swap/supply selector EVM .
D Power supply, 80 VDC at 3 A minimum, quantity of two required
D Power supply, 5 VDC
D Oscilloscope
D Digital voltmeter (DVM or DMM)
The individual DIP switches of SW1 are labeled numerically on the PCB silkscreen. Throughout this document,
references to the DIP switches (e.g., SW1−1) apply to these screened labels, not to any marking on the switch.
However, to determine the ON and OFF positions of the switches, use the labeling on the switch body itself.