Description
2
Connector Functionality
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3
Test Points
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4
Bill of Materials
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1
Description
The EVM design allows for several common application designs: a 12-V system with latched or automatic
retry and a 48-V system with latched or automatic retry. The 12-V versions feature Texas Instruments new
line of high-performance power MOSFETs. The EVM also provides a USB interface for the I2C™ current
monitor when using the TPS2480/1 GUI on a PC.
1.1
Features
•
General TPS2480/1 Device Features
–
Programmable current limiting and power limiting for complete SOA protection
–
Programmable fault timer to eliminate nuisance shutdowns
–
Programmable undervoltage lockout
–
Power good
–
Latched operation mode (TPS2480)
–
Automatic retry mode (TPS2481)
•
EVM Configurable Options
–
TPS2481EVM-001 (12 V, 480 W, auto retry)
–
TPS2480EVM-002 (12 V, 480 W, latched)
–
High-voltage applications (48 V, 400 W, auto retry or latched)
NOTE:
The high-voltage version is not orderable. For details, see the schematic and bill of
materials.
1.2
Applications
•
Any live backplane insertion application
–
Servers
–
Telecommunications
1.3
Electrical Specifications
Table 1. TPS2480/1EVM Electrical and Performance Specifications at 25°C
Characteristic
TPS2481EVM-001
High-Voltage Application
TPS2480EVM-002
Maximum input voltage
15 V
57 V
Input voltage (operating)
10 V 14 V
42 V to 54 V
Turnon voltage (maximum)
9 V
35.8 V
Turnoff voltage (minimum)
7.9 V
31.6 V
Nominal current
40 A
8.3 A
Trip point current
45 A to 55 A
9 A to 11 A
Operating temperature
–40ºC to 85°C
–40°C to 85°C
TPS2480 fault timer trip time (nominal)
528 µs
240 µs
TPS2481 fault timer period (nominal)
4.4 ms
2.0 ms
Program power limit (Vprog/2*R1)
200 W
400 W
2
TPS2480 and TPS2481 Evaluation Module
SLUU370A – January 2010 – Revised June 2010
Copyright © 2010, Texas Instruments Incorporated