Infineon ICB2FL02G智能荧光灯镇流器控制方案

Infineon 公司的ICB2FL02G是26W TC-TEL智能荧光灯镇流器控制IC,外接元件数量最少,具有无芯变压器技术的900V半桥驱动器,高达40秒的数字定时器,同时具有PFC和荧光灯镇流器逆变器.本文介绍ICB2FL02G产品亮点,以及采用ICB2FL02G的智能荧光灯镇流器调光演示板主要特性, 调光电路图, 带调光功能的调光演示板电路图以及带自动调光的演示板扩展电路图和演示板材料清单(BOM).

ICB2FL02G Smart Ballast Control IC for Flourescent Lamp Ballasts Dimming Demoboard 26W TC-TEL Single Lamp Design

ICB2FL02G 亮点:

• Lowest Count of external Components

• 900V-Half-Bridge driver with Coreless Transformer Technology

• Supports Customer In-Circuit Test Mode for reduced Tester Time

• Supports Multi-Lamp Designs

• Integrated digital Timers up to 40 seconds

• Numerous Monitoring and Protection Features for highest Reliability

• Very high accuracy of frequencies and timers over the whole temperature range

• Very low standby losses

• Special detection thresholds for dimming applications

Features PFC

• Discontinuous Mode PFC for Load Range 0 to 100%

• Integrated digital Compensation of PFC Control Loop

• Improved Compensation for low THD of AC Input Current also in DCM operation

• Adjustable PFC Current Limitation

Features Lamp Ballast Inverter

• Adjustable Detection of Overload and Rectifier Effect (EOL)

• Detection of Capacitive Load operation

• Improved Ignition control allows for operation close to magnetic saturation of Inductors

• Restart with skipped Preheating at short interruptions of Line Voltage (for Emergency Lighting)

• Parameters adjustable by resistors only

• Pb-free Lead Plating; RoHS compliant

ICB2FL02G智能荧光灯镇流器控制器

The fluorescent lamp ballast Controller ICB2FL02G is designed to control a boost converter as an active power factor correction (PFC) filter in critical/discontinuous conduction mode (CritCM/DCM) and a half-bridge topology as a lamp inverter with special detection thresholds for dimming applications. The intelligent control concept enables designers to develop cost-effective dimmable ballasts for fluorescent lamps (FL) that fulfil the requirements of a high performance T5 lamp ballast as well as multi lamp topologies, T8 and T4 designs. A state machine controlling the operating modes, a completely integrated digital control loop for the PFC output voltage and low tolerances for reference voltages and operating frequency over the whole temperature range are a result of the advanced mixed signal technology with only few required components externally. Combined with a high voltage level shift driver with Coreless Transformer Technology for the half-bridge inverter the IC offers a significant number of exceptional features for FL ballasts.

The FL-Ballast Controller ICB2FL02G has an improved and enlarged functionality that enables dimmable and high quality single or multi lamp ballasts with a low number of external components. Its benefit is to save system costs and to reach class A2 of the energy efficiency index (EEI) for fluorescent lamp ballasts easily.

This Application Note describes how an electronic ballast can be enhanced using the ICB2FL02G Smart Ballast controller to produce a dimmable electronic ballast. The described circuitry is an example to demonstrate the principle of dimming with the ICB2FL02G. The dimming range is down to about 5% of maximal brightness. There are no limitations of the IC to realise dimming ballasts with much lower brightness levels.


图1.ICB2FL02G调光演示板外形图

图2.ICB2FL02G调光电路图

图3.ICB2FL02G带调光功能的调光演示板电路图

图3.ICB2FL02G带自动调光的演示板扩展电路图

演示板材料清单(BOM):