FEATURES DESCRIPTIONS (CON.)

Output Voltage Programming

The output voltage of the NC series is trimmable by connecting an external resistor between the trim pin and output ground as shown Figure 31 and the typical trim resistor values are shown in Figure 32. The output can also be set by an external voltage connected to trim pin as shown in Figure 32.

The NC30A/40A module has a trim range of 0.9V to 5.0V. A plot of trim behavior is shown in Figure 33

+SENSE

Vout

Cout

GROUND -SENSE

Rs

TRIM

Figure 31: Trimming Output Voltage

The NC30/NC40 modules have a trim range of 0.9V to 5.0V. The trim resistor equation for the them is :

Rs (kΩ) = 12.69 − Vout

Vout − 0.9

Vout is the desired voltage setpoint,

Rs is the trim resistance between TRIM and Ground, Rs values should not be less than 1.8 kΩ

Output Voltage

Rs(Ω)

+0.9 V

OPEN

+1.2 V

38.3K

+1.5 V

18.7K

+1.8 V

12.1K

+2.5 V

6.34K

+3.3 V

3.92K

+5.0 V

1.87K

Figure 32: Typical trim resistor values

+SENSE

Vout

Cout

GROUND -SENSE

Rs

TRIM Vt

Rt

Figure 33: Output voltage trim with voltage source

DS_NC12S30A_05222008

To use voltage trim, the trim equation for the NC30 is (please refer to Fig. 33) :

Rt(kΩ) =

Rs(13.1Vt + Vout − 12.69)

 

0.9Rs − Vout(Rs + 1) + 12.69

Vout is the desired output voltage Vt is the external trim voltage

Rs is the resistance between Trim and Ground (in KΩ)

Rt is the resistor to be defined with the trim voltage (in KΩ)

Below is an example about using this voltage trim equation :

Example：

If Vt = 1.25V, desired Vout = 2.5V and Rs = 1 kΩ

Rt(kΩ) =

Rs(13.1Vt + Vout − 12.69)

= 0.72kΩ

0.9Rs − Vout(Rs + 1) + 12.69

Power Good

The converter provides an open collector signal called Power Good. This output pin uses positive logic and is open collector. This power good output is able to sink 5mA and set high when the output is within ±10% of output set point. The power good signal is pulled low when output is not within ±10% of Vout or Enable is OFF.

Output Capacitance

There is no output capacitor on the NC series modules. Hence, an external output capacitor is required for stable operation. For NC30 modules, two external 6.3V/680μF output low ESR capacitors in parallel (for example, OSCON) are required for stable operation.

It is important to places these low ESR capacitors as close to the load as possible in order to get improved dynamic response and better voltage regulation, especially when the load current is large. Several of these low ESR capacitors could be used together to further lower the ESR.

Please refer to individual datasheet for the maximum allowed start-up load capacitance for each NC series as it is varied between series.

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Delta Electronics NC30 manual Output Voltage Programming, Output Capacitance, Example：
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NC30 specifications

Delta Electronics NC30: A Comprehensive Overview

Delta Electronics is renowned for its innovative solutions in power management and automation. One of the standout products in their extensive lineup is the NC30, which has garnered attention for its advanced features and robust performance. Designed for a variety of applications, the NC30 is particularly valued in sectors such as industrial, manufacturing, and energy efficiency.

At its core, the NC30 is a state-of-the-art controller that excels in managing and optimizing energy use. One of its primary features is its integrated energy management system, which enables real-time monitoring and analysis of energy consumption. This capability allows users to identify inefficiencies and implement corrective measures, ultimately reducing operational costs.

In terms of connectivity, the NC30 is equipped with versatile communication protocols, facilitating seamless integration with existing systems. It supports various industrial communication standards, including Modbus, Ethernet/IP, and CANopen. This connectivity not only enhances interoperability but also allows for remote monitoring and control, a feature that is becoming increasingly essential in today’s smart factories.

The NC30 also boasts an intuitive user interface, which simplifies configuration and operation. Its graphical display provides clear insights into system performance and energy metrics, enabling users to make informed decisions quickly. Additionally, the device supports multiple language options, catering to a global audience and enhancing usability across different regions.

Another remarkable characteristic of the NC30 is its scalability. Whether deployed in a small facility or a large industrial plant, the NC30 can adapt to various scales of operation. This flexibility makes it an ideal choice for businesses looking to future-proof their investments as technologies evolve and operational demands change.

The NC30 is further enhanced by Delta's commitment to sustainability. The controller is designed to optimize energy efficiency, not only helping businesses save on costs but also contributing to environmental conservation efforts. With growing emphasis on energy-efficient practices, the NC30 helps organizations align with green initiatives and regulatory requirements.

In summary, the Delta Electronics NC30 is a powerful, versatile, and user-friendly controller that excels in energy management. Its advanced features, including real-time monitoring, communication capabilities, and scalability, make it a valuable asset for any organization aiming to enhance operational efficiency and sustainability. As industries continue to evolve, tools like the NC30 will undoubtedly play a vital role in shaping the future of energy management and automation.
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