E48SR12006NRFH データシートの表示（PDF） - Delta Electronics, Inc.

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E48SR12006NRFH

Delphi Series E48SR12006, 72W Eighth Brick DC/DC Power Modules: 48V in, 12V/6A out

Delta Electronics, Inc. 

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 protection from thermal damage. If the

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 logic high. Positive

logic turns the modules on during logic high and off during

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.

E48SR12006_03022007

Vi(+) Vo(+)

Sense(+)

ON/OFF

Sense(-)

Vi(-) Vo(-)

Figure 13: 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).

Vi(+) Vo(+)

Sense(+)

Contact

Resistance

Sense(-)

Vi(-) Vo(-)

Contact and Distribution

Losses

Figure 14: 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.

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