What to look for when choosing a DC-DC converter for a DC power supply?

DC-DC converters are an important choice in DC power supplies. In this article, we will discuss what are the intrinsic requirements when choosing a DC-DC converter for a DC power supply and what are the extrinsic requirements when choosing a DC-DC converter for a DC power supply.

Here is the content list:

• What are the intrinsic requirements when choosing a DC-DC converter from a DC power supply?

• What are the external requirements when choosing a DC-DC converter for a DC power supply?

What are the intrinsic requirements when choosing a DC-DC converter from a DC power supply?

1. Efficiency: The conversion efficiency of battery-powered inductive DC-DC converters is 80% to 85%. The loss is mainly caused by external diodes and modulator switches.

2. Quiescent current: The inductive DC power DC-DC converter with frequency modulation (PFM) inductive DC-DC converter is a switching DC-DC converter with the minimum quiescent current. By regulating the voltage through frequency modulation, it can provide power with a small load current.

3. Minimum operating voltage: Battery-powered inductive DC-DC converters can start operation at 1V or less, making them ideal for single-cell battery-powered electronic devices.

4. Output regulation: Inductive DC-DC converters have excellent output regulation. Some inductive DC-DC converters also have external compensation pins that allow you to "fine-tune" the output transient response characteristics depending on the application.

What are the external requirements when selecting a DC-DC converter for a DC power supply?

1. Mounting Size: Many new inductive DC-DC converters are available in SOT packages, but often require the appearance of larger external inductors. In addition, the circuit layout of the inductive DC-DC converter itself requires more board-level space (additional decoupling, special ground wire handling, shielding, etc.).

2. Setup cost: In recent years, the cost of adopting inductive DC-DC converters has gradually decreased, and the need for external parts have also been reduced.

3. Noise: Inductive DC-DC converters are the source of power supply noise and switching radiation noise (EMI). Wideband PFM-guided DC-DC converters generate noise over a wide frequency band. You can increase the operating frequency of inductive DC-DC converters to generate noise beyond the frequency band of the system.

4. Integration: Inductive DC-DC converters: A chip that integrates a switching regulator and other functions (voltage detector, line regulator, etc.) has been developed. For example, the TC16 chip integrates a PFM boost converter, LD0, and voltage detector into a SO-8 package. Such devices offer superior electrical performance and take up less space than discrete implementations.

There are many details to pay attention to when selecting DC-DC converters for DC power supplies, including intrinsic and extrinsic requirements. In more than a decade of power supply and sensor research and development. We always adhere to the purpose of "customer first, the brand first, technology to improve life" and the commitment of "quality, integrity, the best service, the latest technology", committed to wholehearted service, provide quality products, to meet the needs of diverse customers, to meet the Diversified market demand. If you have relevant needs, welcome to visit our official website: https://www.smunchina.com. for consultation and understanding. Thank you very much for your support.