2, the power management chip model table is as follows: PIC24F32KA301. PIC24F16KA301. PIC24F16KA101. PIC18F14K22. PIC18F14K50. PIC16F1829. PIC16F1509. dsPIC33FJ12MC201. PIC24F08KA101. PIC18F13K22. 1PIC18F13K50. 1PIC16F685. 1PIC16F689. 1PIC16F690.
3, the current commonly used chip: TL49TL59SG3524 and other used to drive dual-channel bipolar transistor, SG3525 for the dual-way totem pole output can drive dual-channel MOSFET, dual-drive can be used to drive half bridge or full bridge type forward switching power supply, power generally from tens of watts to tens of thousands of watts. The UC384UC384UC3845 is generally used for flyback switching power supplies, and the power is generally several wattsHundreds of watts.
4, originally DC/DC has a lot of chips to choose from, you are here is a BOOST, you can use boost circuit, you can also use push-pull circuit, you can also use bridge circuit, because the power is not large, with bridge circuit is not cost-effective. If you choose a push-pull circuit, you can use either 3525 or 494. Specific models are KA3525A, KA3524, SG3524, SG3525, TL494, UC494 and so on.
5, the use of six-pin switching power supply chip, make switching power supply, you can choose OB2532 Chip. OB2532 is a six-pin switching power supply chip, 1 pin is GND end, 2 pin is GATE end, 3 pin is CS end, 4 pin is INV end, 5 pin is COMP end, 6 pin is VDD end. Using this chip plus a switching power supply pulse transformer is very easy to form a switching power supply.
LDO is a low-voltage differential linear regulator, or called a low-voltage drop device, indicating that it is generally used for occasions that require buck, with low cost, low noise, and small static currentAnd other advantages. It also requires very few external components, usually only one or two bypass capacitors. The main reason why the performance of the LDO linear regulator can reach this level is that the regulator is a P-channel MOSFET.
/79 series is the most convenient to use, in addition to this, the most commonly used is the LM317/337 adjustable three-terminal regulator, the performance is better than the 78/79 series, mainly stability, output residual ripple, load adjustment rate, high-frequency load output capacity is better. But the wiring is a little more complicated.
TPS92411: It's efficient and compactThe AC/DC conversion chip is suitable for a variety of power applications. It provides a stable output voltage with excellent efficiency. LM5007: This is also a commonly used AC/DC conversion chip that features a wide input voltage range, high efficiency, and excellent thermal performance.
Electronic components 7812 refers to the three-end voltage regulator IC chip components, suitable for a variety of power supply voltage regulator circuits, good output stability, easy to use, output overcurrent, overheating automatic protection. Wide range of application Electronic components 7812 is suitable for a variety of power supply voltage regulator circuits, a wide range of use. Output stable electronsThe output stability of component 7812 is good, which can ensure the stability of power output.
Founded in 2007, Shengbang Microelectronics is one of the leading analog integrated circuit solution providers in China, with more than 4000 products in 30 categories, covering two major fields of signal chain and power management. The company's technical team is composed of international industry experts, and the average age of core personnel is more than 20 years. The company has independent research and development of all products, with 100% independent intellectual property rights.
AC-DC conversion chip: responsible for converting alternating current to direct current, such as the aforementioned power adapter or power moduleBlock used in the chip. DC-DC conversion chip: Includes various forms of converters, such as Buck (Buck) converter, Boost (Boost) converter, and buck-boost (Buck) converter chip.
1, PN8680. The octagon chip has LM35PN8680, NE555 and other models, and the octagon chip on the power board of Kehai Everywhere is PN8680. Octagonal chip is also called octagonal integrated circuit chipIs an integrated circuit chip form.
2, you can look at TOP23X series single chip power supply IC. It's very similar to the way you talked about the IC application. For example, TOP220 1 pin start resistor, 8 grounding, 6 pin none, 5 pin switch transformer, 4 pin control end. This type of IC is very common in MOTOROLA chargers, you can buy a used charger and take it apart.
3, THX202H instead. According to the network information query, the 8-pin integrated block 202 is replaced by THX202H, and the first is that THX202H adopts patented technology to prevent the errorLoad saturation resistance, can meet the higher green standards of the switching power supply integrated circuit.
4, the pin power chip TB6806 is a high-performance primary side controller, which can provide high precision constant voltage and constant current output performance, especially suitable for low-power offline charger applications. At the same time, TB6806 also supports quasi-resonant step-down LED constant current, constant voltage output applications, only need to connect the SEL pin short to the GND pin.
5, the switching power supply driver chip is generally not directly connected to the transformer. Generally, one of the pins outputs a PWM signal to that MOSFET. And the average engineer will not deduce what the chip is according to the pin, there is no reverse operation.
1, LD7575 power chip is an adjustable regulator used in switching power supply voltage controller. The chip has a wide rated input voltage range and high efficiency characteristics Domestic switching power supply chip , can provide long-term stable output voltage. Its input voltage range is about 6V to 30Between V Domestic switching power supply chip , the output voltage is 24V to more than 80V. In addition, the domestic switching power supply chip , the chip has a variety of safety measures such as short circuit protection and overtemperature protection, to ensure that the domestic switching power supply chip the circuit is stable and reliable.
2, v drive pulse output (6) 12-15v power supply (7) 0v empty pin (8) 280-310v HV High voltage start available LD7512 Power chip TB5806 is a chip independently developed by Unionpay Bao Technology, which is compatible with Angbao OB2512. Summary: The Power chip TB5806 is a high-performance quasi-resonant (QR) Primary Side regulation (PSR) PWM power switch with high-precision CV/CC control, ideal for charger applications.
From the performance, generally speaking, OB is better, OB is Ang Bao, used to be Taiwan, and now seems to be controlled by the mainland, the visibility is higher, HT is Hanqi Micro's domestic chip.