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

Vi(+)	Vo(+)
	Sense(+)
ON/OFF
	Sense(-)
Vi(-)	Vo(-)

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).

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.

Contact

Resistance

Vi(+) Vo(+) Sense(+)

Sense(-) Vi(-) Vo(-)

Contact and Distribution Losses

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.

E48SR12007_05222008

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.

E48SR12007 specifications

The Delta Electronics E48SR12007 is a high-performance power supply designed to meet the growing demands of industrial applications. With a focus on reliability and efficiency, this power supply is ideal for use in telecommunications, data centers, and various industrial automation systems.

One of the main features of the E48SR12007 is its compact design, making it suitable for space-constrained environments. With a form factor that aligns with the industry standards, it allows for easy integration into existing systems without requiring significant modifications. This compactness does not compromise its power output, as it delivers a robust output of 1200W, providing ample power for high-demand applications.

A key technology incorporated into the E48SR12007 is its active power factor correction (PFC). This feature enhances the efficiency of the power supply by minimizing harmonic distortion and ensuring compliance with various international standards. By optimizing power usage, the power supply not only reduces operational costs but also contributes to a more sustainable energy footprint.

The E48SR12007 also boasts a wide input voltage range, accommodating variations in power supply from 40V to 72V, which makes it versatile across different geographical regions and applications. Furthermore, it features a low no-load power consumption, which is increasingly important given the economic and environmental focus on energy efficiency.

In terms of reliability, the E48SR12007 demonstrates outstanding performance with an MTBF (Mean Time Between Failures) of over 300,000 hours. This durability is complemented by built-in protection mechanisms, including over-voltage, over-current, and short-circuit protection, safeguarding sensitive equipment from potential damage.

Thermal management is another critical aspect of this power supply. The E48SR12007 utilizes advanced thermal design strategies, including optimal airflow and heat dissipation features, ensuring stable operation even in demanding conditions. The fan design is both efficient and quiet, catering to environments that require minimal acoustic interference.

In summary, the Delta Electronics E48SR12007 stands out with its compact design, robust power output, active PFC, extensive protection features, and impressive reliability. It is a reliable choice for industries seeking a power supply that combines efficiency with high performance, making it a popular selection among engineers and designers alike.