E48SR1R225NRFA Delta Electronics, E48SR1R225NRFA Datasheet - Page 9

• Manufacturer Part Number: E48SR1R225NRFA
• Description: POWER MODULE DC/DC 8TH BRICK 1.2
• Manufacturer: Delta Electronics
• Series: Delphi E48SRr
• Type: Isolated with UVLOr

Specifications of E48SR1R225NRFA

• Operating Temperature: -40°C ~ 107°C
• Power (watts) - Rated: 30W
• Efficiency: 88%
• Approvals: CE, cUL, TUV, UL
• Output: 1.2V
• Number Of Outputs: 1
• Power (watts): 66W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 8-DIP Module, 1/8 Brick
• 1st Output: 1.2 VDC @ 25A
• Size / Dimension: 2.30" L x 22.8" W x 0.35" H (58.4mm x 22.8mm x 9mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 2nd Output: -
• 3rd Output: -
• 4th Output: -

DS_E48SR1R225_05142009
FEATURES DESCRIPTIONS
Over-Current Protection
The modules include an internal output over-current
protection circuit, which will endure current limiting for an
unlimited duration during output overload. If the output
current exceeds the OCP set point, the modules will
automatically shut down (hiccup mode).
The modules will try to restart after shutdown. If the
overload condition still exists, the module will shut down
again. This restart trial will continue until the overload
condition is corrected.
Over-Voltage Protection
The modules include an internal output over-voltage
protection circuit, which monitors the voltage on the output
terminals. If this voltage exceeds the over-voltage set
point, the module will shut down (Hiccup mode). The
modules will try to restart after shutdown. If the fault
condition still exists, the module will shut down again. This
restart trial will continue until the fault condition is
corrected.
Over-Temperature Protection
The over-temperature protection consists of circuitry that
provides
temperature exceeds the over-temperature threshold the
module will shut down.
The module will try to restart after shutdown. If the
over-temperature condition still exists during restart, the
module will shut down again. This restart trial will continue
until the temperature is within specification.
Remote On/Off
The remote on/off feature on the module can be either
negative or positive logic. Negative logic turns the module
on during a logic low and off during a logic high. Positive
logic turns the modules on during a logic high and off
during a logic low.
Remote on/off can be controlled by an external switch
between the on/off terminal and the Vi(-) terminal. The
switch can be an open collector or open drain.
For negative logic if the remote on/off feature is not used,
please short the on/off pin to Vi(-). For positive logic if the
remote on/off feature is not used, please leave the on/off
pin floating.
protection
from
thermal damage. If
the
Figure 16: Remote on/off implementation
Remote Sense
Remote sense compensates for voltage drops on the
output by sensing the actual output voltage at the point
of load. The voltage between the remote sense pins
and the output terminals must not exceed the output
voltage sense range given here:
[Vo(+) – Vo(–)] – [SENSE(+) – SENSE(–)] ≤ 10% × Vout
This limit includes any increase in voltage due to
remote sense compensation and output voltage set
point adjustment (trim).
Figure 17: Effective circuit configuration for remote sense
operation
If the remote sense feature is not used to regulate the
output at the point of load, please connect SENSE(+) to
Vo(+) and SENSE(–) to Vo(–) at the module.
The output voltage can be increased by both the
remote sense and the trim; however, the maximum
increase is the larger of either the remote sense or the
trim, not the sum of both.
When using remote sense and trim, the output voltage
of the module is usually increased, which increases the
power output of the module with the same output
current.
Care should be taken to ensure that the maximum
output power does not exceed the maximum rated
power.
Resistance
Contact
Vi(+)
Vi(-)
Sense(+)
Sense(-)
Vi(+)
ON/OFF
Vi(-)
Vo(+)
Vo(-)
Sense(+)
Sense(-)
Vo(+)
Vo(-)
Contact and Distribution
Losses
9