Texas Instruments Simple -48V Hot Swap Controller EVM TPS2392EVM TPS2392EVM 데이터 시트
제품 코드
TPS2392EVM
SLUU155 – March 2003
5
Full-Featured –48-V Hot Swap Power Manager
1
Introduction
This User’s Guide describes the use and features of the full-featured –48-V hot swap evaluation module (EVM).
This EVM can be used to learn about the TPS2392 and TPS2393 hot swap power manager (HSPM) integrated
circuits from Texas Instruments. The TPS2392 and TPS2393 are negative voltage hot swap controllers intended
for use in systems needing to hot swap telecom distribution-level voltages. They integrate inrush current control,
peak current limiting, electronic circuit breaker, enable input, powergood reporting, overvoltage and
undervoltage protection, debounced insertion detection, and current fault indication. The EVM is a PCB-based
tool featuring either device, and can be used to evaluate device operation in simulated live insertion events.
This EVM can be used to learn about the TPS2392 and TPS2393 hot swap power manager (HSPM) integrated
circuits from Texas Instruments. The TPS2392 and TPS2393 are negative voltage hot swap controllers intended
for use in systems needing to hot swap telecom distribution-level voltages. They integrate inrush current control,
peak current limiting, electronic circuit breaker, enable input, powergood reporting, overvoltage and
undervoltage protection, debounced insertion detection, and current fault indication. The EVM is a PCB-based
tool featuring either device, and can be used to evaluate device operation in simulated live insertion events.
1.1
Features
The following list highlights some of the features of the TPS2392 and TPS2393 device.
D
Wide input supply range of –20 V to –80 V
D
Transient rating to –100 V
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Programmable current limit
D
Programmable current slew rate
D
Programmable UV/OV thresholds/hysteresis
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Debounced insertion detection inputs
D
Open-drain power good (/PG) output
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Fault timer to eliminate nuisance trips
D
Open-drain fault output (FAULT)
D
Enable input (EN)
D
14-pin TSSOP package
1.2
Description
The TPS2392 and TPS2393 integrated circuits are hot swap power managers optimized for use in nominal
–48-V systems. They operate over a supply voltage range of –20 V to –80 V, and are rated to withstand spikes
to –100 V. In conjunction with an external N-channel FET and sense resistor, they can be used to enable live
insertion of plug-in cards and modules in powered systems. Each device provides load current slew rate control
and peak magnitude limiting. Undervoltage and overvoltage shutdown thresholds are easily programmed via
a three-resistor divider network. In addition, two active-low, debounced inputs provide plug-in insertion
detection. A power good (PG) output enables downstream converters. The TPS2392 and TPS2393 also provide
the basic hot swap functions of electrical isolation of faulty cards, filtered protection against nuisance
overcurrent trips, and single-line fault reporting.
–48-V systems. They operate over a supply voltage range of –20 V to –80 V, and are rated to withstand spikes
to –100 V. In conjunction with an external N-channel FET and sense resistor, they can be used to enable live
insertion of plug-in cards and modules in powered systems. Each device provides load current slew rate control
and peak magnitude limiting. Undervoltage and overvoltage shutdown thresholds are easily programmed via
a three-resistor divider network. In addition, two active-low, debounced inputs provide plug-in insertion
detection. A power good (PG) output enables downstream converters. The TPS2392 and TPS2393 also provide
the basic hot swap functions of electrical isolation of faulty cards, filtered protection against nuisance
overcurrent trips, and single-line fault reporting.
The TPS2392 latches off in response to current faults. The TPS2393 periodically retries the load, to test for the
continued existence of a fault.
continued existence of a fault.