HV9961NG-G-M934

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The HV9961NG-G-M934 is a highly efficient Smart LED driver IC with extended temperature operation range. The HV9961NG-G-M934 LED driver is typically used in LED retrofit systems, including LED spotlights and ceiling lighting, landscape lighting, and street lighting. The IC integrates a highly efficient PFC converter and a current-mode buck converter to drive up to six strings of LEDs with a range of 24-42V and total output current up to 4A.

Features

• High efficiency: up to 95%
• Adjustable dimming: 0 ~ 10V or 10V PWM
• Compatible with a fixed resistance for LED dimming control
• Extended temperature range: -40°C to +85°C
• Low standby power consumption
• Over-temperature, over-current, over-voltage protection
• Integrated phase-shift control

Application Field

The HV9961NG-G-M934 can be used in a variety of applications. It is ideal for use in LED retrofit systems, including LED spotlights and ceiling lighting, landscape lighting, and street lighting. The IC can also be used in high-bay lighting, industrial lighting, and refrigeration lighting.

Working Principle

The HV9961NG-G-M934 LED driver IC is designed for driving up to six strings of LEDs with a total output current up to 4A. The IC utilizes a highly efficient PFC converter and a current-mode buck converter to drive the LEDs. The PFC converter provides a power factor of up to near unity and high efficiency. The LED current accuracy is within ±3% and the LED strings can be individually current-regulated via an external resistor. The current-mode buck converter utilizes an external resistor to set the LED current. The dimming signal (0V~10V or 10V PWM signal) is regulates the duty cycle of the boost converter to control the LED current.

The device also supports over-temperature protection and over-current detection for added safety. The IC has a low standby power consumption that helps to reduce system cost. The device is designed for a wide temperature range applications (-40°C to +85°C).

Conclusion

The HV9961NG-G-M934 LED driver IC is a highly efficient, low standby power consumption device that supports a range of 24-42V and total output current up to 4A. The device is ideal for use in LED retrofit systems, including LED spotlights, landscape lighting, and street lighting. The IC utilizes a highly efficient PFC converter and a current-mode buck converter to drive the LEDs, and can be used in a wide temperature range applications (-40°C to +85°C). The device also supports over-temperature protection and over-current detection for added safety.

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