Datasheet
2.2 Features
3 Electrical Specifications
3.1 Absolute Maximum Ratings
3.2 Recommended Operating Conditions
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Electrical Specifications
The TPS2458EVM includes the following features:
• One TPS2458 ATCA™ AdvancedMC™ Controller IC
• Programming and sense resistors (12-V)
• Low R
DS
(ON) pass and block FET’s (12-V)
• Input and output power jacks for external supply and optional load connection
• up to 880 µ F (4 × 220 µ F) jumpered load capacitors (12-V channel) for simulated Payload Power
output bulk capacitance
• 150 µ F jumpered load capacitor for the Management Power channel
• Multiple, switch-selectable fault timer settings, each channel
• Slide switch actuation of enable inputs
• Expansion port headers
The use of these features is described in greater detail later in this document.
The absolute maximum ratings for the TPS2458EVM are given in Table 1 .
Table 1. Absolute Maximum Ratings
(1) (2)
RATING UNIT
Input voltage range, 12-V supply –0.3 to 13.8 V
Input voltage range, 3.3-V supply –0.3 to 4
Applied voltage, pins of J21, J22 EN12x, ORENx –0.3 to (V
IN
(12VINx) + 0.5)
Applied voltage, pins of J21, J22 SUMx, EN3x –0.3 to (V
IN
(3V3INx) + 0.5)
Output current, 12-V outputs 10 A
Output current, 3.3-V outputs Internally limited by device
Output current, SUMx –5 mA
Storage temperature range –55 to 150 ° C
(1)
All voltages are with respect to the EVM GND node.
(2)
Currents are positive into and negative out of the specified terminal.
The recommended operating conditions for the TPS2458EVM are given in Table 2 .
Table 2. Recommended Operating Conditions, TPS2458EVM
(1) (2)
MIN TYP MAX UNITS
Input supply voltage, 12 V 8.8 12 13.2 V
Input supply voltage, 12 V (for specified V
OUT
) 11.3 12 13.2
Input supply voltage, 3.3 V 2.85 3.3 3.5
Input supply voltage, 3.3 V (for specified V
OUT
) 3.235 3.3 3.465
Load current, payload power out (either channel) –7.4 A
Load current, management power out (either channel) –165 mA
(1)
All voltages are with respect to the EVM GND node.
(2)
Currents are positive into and negative out of the specified terminal.
SLUU348A – February 2009 – Revised August 2009 TPS2458 ATCA™ AdvancedMC™ Controller 3
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