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.

The module will try to restart after shutdown. If the over- voltage condition still exists during restart, the module will shut down again. This restart trial will continue until the output voltage is within specification.

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 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 to floating.

Figure 19: Remote on/off implementation

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 Vout1(+) or RTN. The TRIM pin should be left open if this feature is not used.

Figure 20: Circuit configuration for trim-down (decrease output voltage)

If the external resistor is connected between the TRIM and Vout1(+) pin, the output voltage set point decreases (Fig. 20). The external resistor value is from the table below.

9

DS_Q48DR1R833_03162007

Page 9
Image 9
Delta Electronics Series Q48DR manual Features Descriptions

Series Q48DR specifications

Delta Electronics, a prominent player in power management solutions, has expanded its product portfolio with the introduction of the Series Q48DR. This versatile DC-DC converter is specifically designed to meet the rigorous demands of modern industrial, telecommunications, and networking applications. The Q48DR series is noted for its high efficiency, compact design, and wide input voltage range, making it an ideal choice for power-sensitive environments.

One of the standout features of the Q48DR series is its high efficiency rating, typically exceeding 90%. This efficiency translates into reduced energy consumption and lower thermal output, which is crucial in applications requiring continuous operation. The advanced topology employed in the Q48DR not only maximizes energy conversion but also ensures minimal power losses across a variety of loads.

The input voltage range of the Q48DR is impressively broad, accommodating inputs from 36V to 75V DC. This wide input range ensures compatibility with a variety of power systems, simplifying integration in different setups. Moreover, the output voltage is adjustable, allowing users to fine-tune the power supply to match specific application requirements, typically ranging from 12V to 3.3V.

In addition to flexibility, the Q48DR series incorporates an array of protective features. These include overload protection, over-voltage protection, and thermal shutdown. These safety mechanisms are essential for safeguarding sensitive electronic components and maintaining system reliability in demanding environments.

The construction of the Q48DR is another important aspect, with a compact design that facilitates easier installation in space-constrained applications. The converter is housed in a robust metal casing, providing EMI shielding and thermal management. This design ensures that the unit can operate reliably in harsh industrial settings while minimizing electromagnetic interference with other devices.

Furthermore, Delta Electronics places a strong emphasis on sustainability. The Q48DR series meets RoHS standards, reflecting the company's commitment to reducing environmental impact without compromising performance. With a comprehensive range of certifications, including UL and CE, the Q48DR is built to provide peace of mind to users while ensuring compliance with global standards.

In summary, the Delta Electronics Series Q48DR DC-DC converter exemplifies advanced power management through its high efficiency, versatile input/output specifications, protective features, and compact design. These characteristics make it an ideal solution for a multitude of applications in various sectors, ensuring reliable performance and ease of integration.