HV9980WG-G Integrated Circuits (ICs)

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The HV9980WG-G is a linear additive pulse-width modulation (PWMLED) driver with 16-bit high-speed differential current steering, a high voltage start-up circuit and an active power factor correction controller. It is a PMIC (power management integrated circuit) designed specifically for lighting applications, particularly for driving high intensity, high brightness light emitting diode (LED) arrays. This article will provide an overview of the device and its application field as well as an explanation of its working principle.

The HV9980WG-G provides an ideal power management solution for LED lighting systems due to its wide input voltage range, up to 650-volt operation, high efficiency, up to 99% and low power consumption. It offers high efficiency over a wide output current and voltage range and provides a temperature compensation dataset that can be dynamically adjusted to maintain a constant output power over a wide temperature range. The device also features an adaptive thermal balance, a low-voltage standby state, and a fault-protection mechanism for power drops. All these features make the HV9980WG-G an ideal choice for the development of both cost-effective and energy-efficient LED lighting systems.

The working principle of the HV9980WG-G is based on a linear adder type, pulse-width modulation control scheme, which enables it to accurately control the output current of the LED array while providing linear dimming capabilities. The device consists of two independent power supply sections that are switchable by switching the input voltage of the device between 650V and 10V. The first supply section is operated in a closed loop technique utilizing the feedback voltage, while the second supply section is operated in an open loop PWM control. In the closed loop technique, the error between the feedback voltage and a commanded output voltage is monitored and controlled through an amplifier, whereas in the open loop PWM control, the circuit is operated by modulating the gate charges of the external MOSFETs using an internal oscillator.

The HV9980WG-G also features an active power factor correction (PFC) control, which helps to reduce the harmonic distortion of input current by dynamically controlling the switching waveforms of the power switching devices to maintain a sinusoidal input current. Furthermore, the device offers a wide range of protections, including over-current protection, soft start, over-voltage protection, over-temperature protection, and under-voltage lockout. All these protections help to improve system reliability.

The HV9980WG-G is well suited for LED lighting applications such as billboard displays, landscaping displays, outdoor architectural lighting, large area indoor lighting, and automotive lighting. It is an ideal choice to drive LED arrays with higher current levels, as it offers both linear dimming as well as high efficiency at high output current. As a result, the HV9980WG-G can provide up to 99% high efficiency over a wide range of load currents and output voltages.

In conclusion, the HV9980WG-G is a PMIC specifically designed for LED lighting applications. The device offers a wide input voltage range, high efficiency, up to 99%, and low power consumption. It integrates 16-bit high-speed differential current steering, as well as an active power factor correction control that helps to reduce the harmonic distortion of the input current. Additionally, the device provides a wide range of protections to ensure system reliability. As a result, it is an ideal choice for driving high current LED arrays, particularly for billboard displays, landscaping displays, outdoor architectural lighting, large area indoor lighting, and automotive lighting applications.

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