TOP255GN-TL

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PMIC - AC DC Converters, Offline Switchers, occupy a position of great importance in terms of providing the power necessary for the operation of many electronic devices. Among all the various products, TOP255GN-TL series is a kind of Off-line PWM Switching Regulators, and it still dominates the market of off-line power supplies, especially in the mid-power sector. In addition, TOP255GN-TL series has an extensive application field, easy-to-use and cost-effective, so it has been widely used in many kinds of operating scenarios. These scenarios include but not limited to home appliances, office automation, power tools, digital appliances, LED lights and so on.

TOP255GN-TL series can provide power up to 225W with high efficiency and low standby power. It is designed with a selectable frequency and with a built-in feature like differential remote sense and line oscillator enabling various input voltage. Furthermore, it is also featured with latching shutdown, and the proprietary “Latched Oscillator Stop” technique that platforms can optionally employ to reduce audible noise.

The working principle of TOP255GN-TL series is astonishingly simple. Here is a brief description about it. As shown in the figure below, the AC line voltage is fed to an EMI filter and then to a full-wave bridge rectifier. The rectifier output charges bulk capacitor Cbulk. Then, the output voltage is regulated by a TLV2562 pulse-width-modulated (PWM) controller. The PWM controller has an internal voltage reference and Error Amplifier that feedback to the output voltage by means of an opto couple connected to the output. One of TOP255GN-TL series\' advantages is the automatic Eco-mode operation, which will contribute to an efficiency improvement of 10%-15%.

In conclusion, TOP255GN-TL series has a wide field of applications and the working principle is simple and straightforward. It offers high efficiency with very low standby power and high power output, which make it an ideal choice for many electronic devices. The automatic Eco-mode operation greatly improves the efficiency too. Thus, TOP255GN-TL series is the perfect solution for many application scenarios.

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