APA105-KJ-004

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The APA105-KJ-004 evaluation board showcases the abilities of Texas Instruments’ APA105KJ high-voltage off-line driver. This driver is suitable for applications which require a bridgeless totem-pole topology such as non-isolated AC/DC and DC/DC power supplies, LED lighting applications, power factor correction and motor control applications.

Application Field

The APA105KJ is designed for off-line switch mode power supplies (SMPS) such as those used in LED lighting, motor controllers, and power factor correctors. It operates in a bridgeless totem-pole topology and provides a robust, high-speed solution for applications requiring low operating and startup currents. This makes it an ideal choice for power supplies requiring high efficiency and low noise. Additionally, it is characterized for an operating temperature range from -40°C to 125°C.

Working Principle

The APA105KJ is a gate driving IC with integrated high- and low-side FETs. This IC is designed to reduce power losses and to lower start-up current. It can also provide efficient AC/DC and DC/DC rectification, as well as LED fading and dimming functions. The integrated internal +12 V supply and low voltage start enable the IC to operate from a wide supply voltage range of +7.5 V to +30 V. An integrated auxilliary MOSFET with current compression capability protects the IC from short-circuit. The APA105KJ is optimized for high-frequency operation with a maximum operating frequency of 1 MHz.

The APA105-KJ-004 evaluation board provides a platform for testing the APA105KJ driver IC. It includes protection circuitry and power-on reset, allowing a robust and reliable solution when using the APA105KJ. It also features a five-position jumper which can be used to adjust the pulse-width modulation (PWM) dimming frequency and duty cycle. It has direct connections for input and output signals, as well as an onboard 200 kHz, 12 V buck converter, enabling easy evaluation of the Texas Instruments APA105KJ.

The APA105KJ is a state-of-the-art integrated off-line driver for applications requiring low losses, high efficiency, and low noise. Its wide operating temperature range and high frequency operation make it an ideal solution for LED lighting, motor controllers, and power factor correction applications. The APA105-KJ-004 evaluation board provides a platform to evaluate and test the capabilities of the APA105KJ and its features.

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