The AP combines a Pulse Width Modulation. (PWM) controller and a V power MOSFET, specifically designed for a high performance off-line converter. AP Datasheet – PWM Controller – AiT Semiconductor, APP8U datasheet, AP pdf, AP pinout, AP equivalent, data. Product Detail: Offer AP CHIPOWN, APA, APC from Hong Kong Components In Stock Suppliers in 【Price】【Datasheet PDF】USA.

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The second one with negative output voltage is a buck-boost converter. Fig 1 Startup circuit 2. Figure 7 shows the variation of the output voltage with input DC voltage change.

Figure 24 shows the variation of the output voltage with input DC voltage change. In this case the converter should be simple and low cost.

AP Datasheet PDF – Unspecified

Because excess energy is provided to the output, the output voltage may exceed ap datasheet rated voltage, resulting in the breakdown of the devices in the secondary side. The input capacitor C1 is charged from line via one way rectifier consisting of diodes D1 and D2. The H is a monolithic low-power CMOS device combining a programmable timer and aap series of voltage ap datasheet on the same chip. Ap datasheet xp8012 a large amount of data sheet, You can free PDF files download.

It datasheeh the variation of the output voltage with output current at specific DC input voltage. As soon as the primary switch is turned off, the inductor reverses the voltage between its terminals and current starts to flow through the forward biased D5 diode and charges the output capacitor C3.


The holes for through-hole components are not seen in the picture. The feedback current can change from 0mA full output power to about 0.

The outline dimensions are 38x29mm. This publication supersedes and replaces all information previously supplied. The way, how the reference board can be easily switched between two basic non-isolated topologies buck and buck-boost converter was described.

T c Case Operating Temperature. Auxiliary under voltage lockout with hysteresis. The SW pin is designed to connect directly to the ddatasheet lead of the transformer. A feedback pin controls the operation of the device.

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Over temperature, datsheet current and over voltage. Unlike conventional PWM control circuits which use a. By removing the jumper R5 and placement of the jumper R4 the buck converter can be easily changed to the inverting buck-boost converter. Two diodes in series are used for EMI reasons to sustain burst pulses of 2kV. Although connected to an auxiliary transformer. The channel 4 red shows the inductor current. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics.

It means the IC and corresponding supply and feedback loop circuitry is floating. The level of fatasheet negative voltage is equal to the output voltage level.


In this switch-off phase the source terminal of the VIPer12 sees negative level of forward biased D5 and negative output voltage when referenced to ground. The physical appearance of the converter can be observed from Figure 5. For compliance with the EN standard, a small input filter X-capacitor, common mode choke should be added, if there is no EMI filter for the complete system. The presented results depicted from Figure 18 to Figure 21 show the results.


The measurements were performed at VAC input voltage and the 15V output was fully loaded by mA load. One has to take into account the slight variation of the output voltage with the load.

Figure 8 depicts the dependency of the efficiency on the input voltage parameter is output current while Figure 9 shows the dependency on the output current parameter is input voltage.

The purpose of vatasheet pictures is to demonstrate the skipping cycle function at light or no-load condition and cycle-by-cycle primary current limitation at overload or output shorted condition.

Resistor R3 limits the feedback current to a safe value lower than the maximum rating specified in the data sheet. Automatic skip cycle mode in low load ap80112. The R3 voltage variation is 0. It is dedicated for building an auxiliary power supply based on the VIPer12AS monolithic device with rather low output power required.

This allows the inductor current to flow also through D4 and supply the VIPer12 and give the feedback information about output voltage. In this switch-off phase the source terminal of the VIPer12 sees a negative level of the forward biased D5 when referenced to satasheet so it can be considered as grounded. It is because the feedback current reacts to the output load change to adopt switching duty cycle.

Exposure to absolute maximum.

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