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Protection features include cycle-bycycle current limit, thermal shutdown, and frequency foldback at short circuit. The voltage at this pin is regulated to 1.
ACT4060 PDF Datasheet浏览和下载
EN is internally pulled up with a 2? Originally Posted by d In the case of tantalum or electrolytic types, they can be further away if a small parallel 0.
However, if FB voltage is less than 0. Finally, select the inductor core size so that it does not saturate at 3A. Make sure that this peak inductor current is less that the 3A current limit. Exposure to absolute maximum rating conditions for long periods may affect device reliability. The SP-Cap is based on aluminum electrolytic capacitor technology, but uses a solid polymer electrolyte and has very stable capacitance characteristics in both operating temperature and frequency compared to ceramic, polymer, and low ESR tantalum capacitors.
The voltage at this pin is regulated to 1. Users should evaluate each product to make sure that it is suitable for their applications.
So don’t give up. When I try to connect 5Ohms resistor to the output, voltage drops below 2V. This pin acts as the positive rail for the high-side switch’s gate driver. See Stability Compensation in the Application Information section. This is wasting our time. This inductor current has a ripple that is dependent on the inductance value: No idea why, maybe guess b affects that.
For more information on this and other products, contact sales active-semi. Exposure to absolute maximum rating conditions for long periods may affect device reliability. F ceramic capacitor is placed right next to the IC.
ACT (ACTIVE-SEMI) PDF技术资料下载 ACT 供应信息 IC Datasheet 数据表 (4/9 页)
The datasheet itself, application notes, design notes, other informations and often a design kit which include a PCB. Output voltage is very stable and SMPS doesn’t warm up even on load.
In the case of ceramic output capacitors, RESR is very small and does not contribute to the ripple. PV charger battery circuit 4. Of course everything is soldered on PCB.
When higher than 1. The converter operates as follows: This state continues until the cycle starts again.
The output ripple voltage is: When lower than 0. Digital multimeter appears to have measured voltages lower than expected. Output Dayasheet Setting Figure 3 shows the connections for setting the output voltage. With the SW side of the inductor now connected to IN, the inductor current ramps up to datassheet energy in the magnetic field. We all needed to go through it. Make sure that this peak inductor current is less that the 3A current limit. When I tried to replace inductor to 10uH It was a little bit better but the problem still existed.
Current limit happens when COMP reaches its maximum clamp value of 2.
What is the function of TR1 in this circuit 1. Breadboard gives no meaningful results. A wrong PCB layout can have these effects.
For ceramic output capacitor, typically choose a capacitance of about 22? In general, select an inductance value L based on the ripple current requirement: