max5931aeep Maxim Integrated Products, Inc., max5931aeep Datasheet - Page 21

• Manufacturer Part Number: max5931aeep
• Description: Low-voltage, Triple, Hot-swap Controllers/ Power Sequencers/voltage Trackers
• Manufacturer: Maxim Integrated Products, Inc.

To take full tracking advantage of the switch response
time to an output fault condition, it is important to keep all
traces as short as possible and to maximize the high-cur-
rent trace dimensions to reduce the effect of undesirable
parasitic
MAX5931A/MAX5931B close to the card’s connector.
Use a ground plane to minimize impedance and induc-
tance. Minimize the current-sense resistor trace length
(<10mm), and ensure accurate current sensing with
Kelvin connections (Figure 13).
Figure 12. Using the MAX5930A/MAX5931A/MAX5931B on a
Backplane
SUPPLY
POWER
V
IN
IN_
inductance.
Low-Voltage, Triple, Hot-Swap Controllers/
MAX5930A
MAX5931A
MAX5931B
______________________________________________________________________________________
SENSE_
GATE_
ON_
Layout Considerations
Place
Power Sequencers/Voltage Trackers
V
BACKPLANE
OUT
the
REMOVABLE CARD
WITH NO HOT-INSERTION
PROTECTION
MAX5930A/
C
BOARD
When the output is short circuited, the voltage drop
across the external MOSFET becomes large. Hence, the
power dissipation across the switch increases, as does
the die temperature. An efficient way to achieve good
power dissipation on a surface-mount package is to lay
out two copper pads directly under the MOSFET pack-
age on both sides of the board. Connect the two pads
to the ground plane through vias, and use enlarged
copper mounting pads on the topside of the board.
Figure 13. Kelvin Connection for the Current-Sense Resistors
MAX5930A
MAX5931A
MAX5931B
HIGH-CURRENT PATH
SENSE RESISTOR
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