Delta Electronics Series E48SR manual Features Descriptions CON, Output Voltage Adjustment Trim

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FEATURES DESCRIPTIONS (CON.)

Output Voltage Adjustment (TRIM)

To increase or decrease the output voltage set point, the modules may be connected with an external resistor between the TRIM pin and either the SENSE(+) or SENSE(-). The TRIM pin should be left open if this feature is not used.

Figure 18: Circuit configuration for trim-down (decrease output voltage)

If the external resistor is connected between the TRIM and SENSE (-) pins, the output voltage set point decreases (Fig. 18). The external resistor value required to obtain a percentage of output voltage change △% is defined as:

Rtrim − down = 511Δ − 10.2(KΩ )

Ex. When Trim-down -10%(5V×0.9=4.5V)

Rtrim − down = 51110 − 10.2 = 40.9(KΩ )

DS_E48SR05012_05222008

Figure 19: Circuit configuration for trim-up (increase output voltage)

If the external resistor is connected between the TRIM and SENSE (+) the output voltage set point increases (Fig. 19). The external resistor value required to obtain a percentage output voltage change △% is defined as:

Rtrim − up =

5.11Vo (100

+ Δ )

−

511

− 10 .2(K Ω )

1.225 Δ

 

 

 

Δ

 

 

 

 

 

 

 

 

Ex. When Trim-up +10%(5V×1.1=5.5V)

 

Rtrim − up =

5.11 ⋅ 5 ⋅ (100 + 10 )

−

511

 

− 10.2 = 168 (KΩ )

 

 

 

 

1.225 ⋅ 10

10

 

 

 

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 of the module remains at or below the maximum rated power.

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Contents Options Technical Specifications ParameterElectrical Characteristics Curves Typical full load input characteristics at room temperatureFor Negative Remote On/Off Logic For Positive Remote On/Off LogicElectrical Characteristics Curves Output voltage noise and ripple measurement test setup Electrical Characteristics Curves Design Considerations Safety ConsiderationsSoldering and Cleaning Considerations Input Source ImpedanceFeatures Descriptions Features Descriptions CON Output Voltage Adjustment TrimThermal Curves Thermal Testing SetupThermal Considerations Thermal DeratingPick and Place Location Recommended PAD Layout SMDLeaded Sn/Pb Process Recommend TEMP. Profile Lead Free SAC Process Recommend TEMP. ProfileThrough-hole module Mechanical DrawingSurface-mount module Pin No Name FunctionPart Numbering System Model List

Series E48SR specifications

The Delta Electronics Series E48SR is a cutting-edge power supply unit designed to cater to the demanding requirements of modern electronic devices. Renowned for its compact form factor and high efficiency, the E48SR series is ideal for various industrial applications, including telecom, data communication, and industrial automation.

One of the standout features of the E48SR series is its wide input voltage range. This versatility allows the unit to operate seamlessly across different regions and power environments, accommodating everything from standard AC mains to challenging scenarios like high-voltage fluctuations. The E48SR series supports a nominal input range of 100 to 240 VAC, providing a greater degree of flexibility for global deployments.

The E48SR series is also distinguished by its high efficiency, often exceeding 90%. This not only translates to reduced energy consumption but also minimizes heat generation, enhancing the longevity and reliability of the power supply. The incorporation of advanced technologies such as active PFC (Power Factor Correction) helps in maximizing efficiency while ensuring compliance with stringent energy regulations.

Another noteworthy characteristic of the E48SR series is its robust protection features. It is equipped with overload, overvoltage, and short-circuit protections, ensuring that both the power supply and connected devices are safeguarded against potential damage. These features are crucial in industrial applications where power stability is paramount.

In terms of thermal performance, the E48SR series employs a fanless design that enhances its reliability and reduces noise levels. This makes it particularly suited for environments where silent operation is critical, such as in office or laboratory settings. The unit is also designed for easy integration, with a standard footprint that fits into various mounting configurations.

Additional features include adjustable output voltage and current limiting, allowing users to customize the power supply to meet specific application needs. The E48SR series also supports remote sensing capabilities, enabling precise voltage regulation at the load end, further enhancing its usability in demanding scenarios.

Delta Electronics has built the E48SR series with durability in mind, ensuring that it can withstand harsh operational environments. With a wide operating temperature range, this series is capable of functioning reliably in extreme conditions, making it an excellent choice for mission-critical applications.

In summary, the Delta Electronics Series E48SR combines efficient power performance, robust protection features, and reliable thermal management in a compact design, positioning it as a preferred choice for various industrial applications.
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