Texas Instruments TPS2398EBM, Руководство пользователя

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SLUU172 − October 2003
9 Evaluation Modules for −48-V Hot Swap Controllers
2.3 −48-V Hot Swap EVM Operating Specifications
The −48−V hot swap 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. Absolute Maximum Ratings
(1)(2)
PARAMETER MIN MAX UNITS
Input voltage range, J1 −0.3 100 V
Load current, J3 −2.25
A
Load return current, J4 2.25
A
Ambient operating temperature range −40 85
°
C
(1) All voltages are with respect to the PCB −48-V_IN node at J2.
(2) Currents are positive into and negative out of the specified terminal.
As supplied from the factory, the −48-V hot swap EVM is configured for operation under the
following target conditions, shown in Table 3.
Table 3. Recommended Operating Conditions
(1)(2)
PARAMETER MIN TYP MAX UNITS
Input supply voltage, J1 36 48 80 V
Nominal load current, J3 −1
A
Nominal load return current, J4 1
A
Operating temperature range −40 85
°
C
(1) All voltages are with respect to the PCB −48-V_IN node at J2.
(2) Currents are positive into and negative out of the specified terminal.
3 Getting Started
3.1 Equipment Requirements
The following test equipment is required to use the −48-V hot swap EVM (TPS2398EVM or
TPS2399EVM).
•
Power supply, 80 Vdc at 3-A minimum
•
Oscilloscope
•
Digital voltmeter (DVM)
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.