IW1830-00

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The IW1830-00 is an offline switcher belonging to the power management IC (PMIC) AC/DC converters product family. It is designed to deliver the efficient power delivery capabilities necessary for modern digital systems.

The IW1830-00 utilizes a proprietary patented peak current-mode control method for excellent line regulation, fast-transient response, and superior stability. Utilizing an integrated high-voltage switch for resonant switching between the primary and secondary sides of the transformer, the IW1830-00 realizes low audible noise with excellent efficiency and low EMI. The operating frequency is internally set to 100kHz by default, but can be adjusted over a wide range from 20kHz to 1.3MHz.

The IW1830-00 has many application possibilities and can be used in various applications such as lighting, instruments, monitors, and other consumer electronics. Its closed loop current mode control enables fast transient response, excellent loop stability and provides the necessary performance required for offline switching power supplies with high reliability.

The IW1830-00 features a wide input voltage range from 85Vac to 265Vac, allowing for maximum flexibility for designing an application that meets global requirements. Also, the device is equipped with a line up of protection features such as primary input overvoltage protection (OVP), line under voltage lock-out (UVLO), short-circuit protection (SCP) and integrated soft start. With its low standby power to enable green power designs, it meets the Energy Star and CEC requirements.

The IW1830-00 operates with a single-ended primary-inductor converter topology (SEPIC) to reduce component count and size, while also reducing the total application system cost. It also supports a universal input voltage range including 85VAC to 265VAC, enabling global applications. It can also be synchronized to an external clock over a wide range of frequencies (20kHz to 1.3MHz).

The working principle of the IW1830-00 is based on two major stages which are primary side switching, and secondary side rectification. On the primary side, an integrated high-voltage switch is connected to the primary and secondary sides of the transformer and goes through open loop peak current-mode control. This allows for precise control over inductor current and peak current during switching. On the secondary side, there is a rectifier bridge which acts to convert a high frequency AC signal into a DC signal.

In summary, the IW1830-00 is an offline switcher in the PMIC AC/DC converters product family, designed to deliver the efficient power delivery capabilities necessary for modern digital systems. It operates with a single-ended primary-inductor converter topology (SEPIC), supports a wide input voltage range, and features a line up of protection features such as line under voltage lock-out (UVLO) and overvoltage protection (OVP). Its working principle is based on two major stages, primary side switching and secondary side rectification, which enable it to have fast transient response, excellent loop stability, and low EMI.

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