The UBA2024 is a half-bridge IC and 550 V lamp controller. This device is equipped with 9 ohm switches that espouses standard CFL applications up to 15 W. The number of external components can be reduced to only 17 (compared to the 27 typically required by a discrete driver solution) with high level of integration, and the IC supports NXP’s patented luminous phase. Soft start function, an adjustable internal oscillator and an internal drive function with a high-voltage level shifter for driving the half bridge is included on the IC. The oscillator signal is passed through a divider before being fed to the output drivers to guarantee an accurate 50% duty cycle. Demo board for 120 and 230 VAC is available for this device. To facilitate the engineer fine-tune the board to a given burner specification, it’s also supplied with a calculation tool. Here’s the circuit diagram:
Highlights:
- Maximum voltage of 550 V
- Minimum glow time control
- Soft start
- Easy-to-configure burner specification
- Integrated half-bridge power transistors
- Integrated bootstrap diode
- Integrated low-voltage supply
- Adjustable oscillator frequency
[Source: NXP Application Note]
Possibly Related Circuits
- High Frequency Function Generator Using MAX038
Function generator ranging from 0.1 Hz to 20 MHz can be easily built using MAX038 integrated circuit chip. Here is the most simple implementation of high frequency sine wave generator, and you can easily modify it to generate square wave, or triangle waveform. Here is the schematic diagram of the... - Compact Power Factor Controller
This is compact power factor controller circuit. It stabilizes device’s electrical demand to give best power factor characteristic of many types of loads. In many application, a direct rectification of the AC line followed by bulk capacitor filtering is used to get the high DC voltage. This capacitor filtering will... - Li-Ion Driver for 8 White LEDs
We can use boost converter such as TPS61160/1 with a 40V rated integrated switch FET to drive up to 10 LEDs in series. We can use it to reduce output ripple, improve conversion efficiency, and allows for the use of small external component. The external sensor resistor Rset is set... - 12V Neon Lamp Circuit
Neon lamp or tube lamp need high voltage to trigger the ionization of the gas inside the tube. After the ionization occurs, the voltage drops around 40 volts to maintain the current. To drive a neon lamp (fluorescent lamp) using 12 volts battery, we need to convert the DC voltage... - Phase Synchronized – AC Power Controller
We can control the power delivered to an AC load using a phase control circuit. The AC waveform is controlled by the phase control circuit by cutting the cycle to give zero cycle, half cycle, full cycle, or somewhere in between. This circuit is looks like a dimmer circuit, but...
