Silicon Laboratory Si53XX series can ah, si5326, si5338 I have used, the frequency 0.16 to 710MHz continuous adjustable. The chip is programmable, every time onch tool find. Figure 1 shows a simplified inductive DC-DC converter circuit where closing the switch causes an increase in current through the inductor.
2, error amplifier: The role of error amplifier is to amplify the difference between the feedback voltage (FB pin voltage) and the reference voltage, and then use the signal to control the duty ratio of the PWM output signal. Temperature protection: When the temperature is higher than the limit value, the chip stops working.
3, This paper introduces a DC-DC booster switching power supply circuit based on TL494, which uses TL494 power control chip and its externalThe circuit generates PWM wave and controls the on-time of the switch tube through the duty cycle of PWM wave to achieve stable output of different voltages.
4, en is enable, if the chip does not work, you can connect the external switch for control, vcc is the power supply, fb is the feedback, gnd is the ground, lx is the output. oc is not sure, the figure is connected to 10k to the ground, depending on the definition of the datasheet.
5, DC booster chip usually has PWM, PWF and charge pump three.
The voltage boost chip works by converting the input voltage through a transformer to a higher voltage, and then outputs the converted voltage to an electronic device.
A voltage boost circuit is a circuit used to boost voltage. It uses the 555 chip, a popular single-chip trigger. The basic working principle of the 555 booster circuit is that after the 555 chip in the circuit starts working, it converts the input signal into a pulse signal, and then transmits the pulse signal to the inductor or transformer.
It works by passing the input voltage through a network of resistors, reduce the voltage to a lower voltage, and then output the reduced voltage to the load. The output voltage of the step-down IC can be adjusted by adjusting the resistance network.
1, charge pump is to achieve this function, you look at some special charge pump device information will understand, such as ICL7660, different connections can boost the input voltage or reverse phase.
2, in addition, in the field of vehicle electronics, Xidi micro independent researchFa's automotive power management chip products have reached the AEC-Q100 standard, and its DC/DC chip has entered Qualcomm's global automotive platform reference design, and achieved continuous mass production of well-known automotive companies such as Audi, Hyundai, Kia.
3, Power Management Integrated Circuits (PMIC) is a class of integrated circuits used to manage and control electronic equipment power supply. They typically perform several key functions, including voltage conversion, battery charge control, power serialization, and LED driversAnd system power monitoring.
4, the type of power chip Linear power chip: linear power chip is a common type of power chip, its working principle is to convert the input voltage into a stable output voltage by amplifying and regulating the circuit.
5, the use of double cell, super "car gauge level" 10C ultra-thin electrode battery, three charge pump charging scheme, 10 minutes full blood 4, charge fast, more time. With gallium nitride mini charger, 5 meters long charging cable, powerful charging at key moments. The OnePlus 11, the flagship, is over the top.