Six principles, market-recognized multi-function car startup power supply

In fact, no one thought of the DOCA emergence of automotive emergency power supply in the market. It did bring convenience to many riders, but the appearance of a product always accompanied good and bad, and a shaped multi-function car The emergence of emergency power supplies must be designed to be fully displayed in front of consumers. So what are the principles to follow when it comes to market-approved multi-function car starters?

The following principles must be followed when designing a multifunctional car emergency starting power supply architecture:

1, heat.

Assume that in a practical situation where the temperature is high (>30°C), the air flow is not smooth, or even there is no air flow, we should design the heat dissipation according to the minimum efficiency of the DC-DC converter. Moreover, we also need to provide good air circulation conditions to dissipate heat so as to achieve the best heat dissipation conditions.

2, control costs.

In the design of a car's multi-functional emergency power supply, its cost is a factor that needs to be considered in the design process. Therefore, we can use the budget of a specific project to be a PCB type, a package that can be selected, and other design constraints, and simply design and trim the unoptimized conventional power supply.

3, layout and location.

The overall performance of a multi-purpose automotive emergency starting power supply will limit the layout of PCB components, structural design in power supply design, and the design of integrated power supplies that restrict high-chip integration. Therefore, when balancing the overall system performance, mechanical limitations, and costs of the car's multi-functional emergency power supply, the designer needs to start with the actual project requirements.

4, electromagnetic radiation.

As things change, electromagnetic radiation is gradually generated in the electric field. The frequency and radiation of its electric field determine its radiation intensity. A working circuit will be directly disturbed by other circuits. These negative effects are irreversible, so OEMs have established maximum electromagnetic emission limits for ECU units, reducing these negative impacts and making them within controllable limits.

5, voltage VIN range.

As we all know, the transient range of the 12V supply voltage can determine the input voltage range of the power conversion IC. Among them, the most common automotive emergency supply voltage range is 9V to 16V. However, due to environmental factors, conditional factors and other factors, the voltage of the vehicle may be ±100V when using the car's multifunctional emergency power supply. Therefore, the ISO 7637-1 industry standard defines the voltage fluctuation range of the car battery.power bank plant

6. Shutdown current (ISD) and quiescent operating current (IQ).

    If the number of automotive electronic control units rises sharply, the total current consumption of the vehicle battery will also increase rapidly. Therefore, OEMs generally begin to restrict the IQ of each ECU, which can ensure that the static operating current IQ is within the controllable range. For example, the requirements set by the EU are: 100μA/ECU, so the ECU's IQ of less than 100μA is typical of most EU automotive standards.

Therefore, if you want to be a qualified, standard automotive emergency power supply, as long as you follow the above six principles, you can certainly make any multi-functional emergency power supply available in the market. We always insist on these principles, and take the user's vital interests. To make the product, we have the hot start-up power supply for our car to be so popular in the market. A good company is to concentrate on making products and doing conscience products.