ST Life.augmented


Low Voltage Smart Ballast Controller
  • active 活性

The L6520/1 is the first highly integrated ballast controller in the market able to drive both BJTs and MOSFETs, providing all the necessary protections to ensure the maximum reliability of the application in compliance with major safety and power consumption regulations.

By adopting BJTs switches in the application, the IC allows to replace more expensive MOSFETs, strongly reducing the system cost without compromises.

The IC represents also the best and cost effective solution to replace self oscillating solutions when the key requirement is the reliability of the ballast. The benefits are an increased MTBF and a reduction of the costs due to the return from the field.

The higher level of flexibility and integration provided allows the possibility to quickly design ballast with any kind of lamp topology/size/power, without limitations. Depending on the power of the lamp, the IC can work without PFC, with passive PFC or with active PFC. In the latter case the L6562A from STMicroelectronics is the suggested IC for the most cost effective solution.

The IC is fully programmable using only resistors and offers over current protections, choke saturation control and hard switching protection thanks to a sophisticated current control circuit (CCC). In ignition, the CCC limits both the maximum lamp voltage in case of old or broken lamp, and also the lamp current in case of inductor saturation.

When the IC is driving bipolar transistors, a variable dead time ensures the correct base discharge time avoiding cross conduction phenomena. Moreover, the IC prevents the failure due to the lamp's end of life (EOL).

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Errata Sheet
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Key Features

  • Half bridge circuit able to drive both BJT and MOSFET transistors
  • Very accurate oscillator precision in wide operating temperature range
  • BJTs' storage time compensation
  • Preheated start and instant start
  • Hard switching protection
  • Overcurrent / voltage protection
  • Choke saturation control
  • End-of-life protection
  • Programmable without capacitors

线路 图表

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS6681: Highly integrated ballast controller for TL and CFL
3.2 321 KB

Application Notes

描述 版本 大小
AN1902: VIPower: HF converter based on VK06TL devices to drive 58W TL tubes
1.1 1,372 KB
AN2018: VIPower: 18 - 23W electronic ballast for removable tubes
1.1 139 KB

Related Tools and Software

Related Tools and Software

产品型号 描述
EVAL6520-1421 14 W / 21 W T5 miniature ballast driven by L6520 and STT13005D bipolar transistors

Publications and Collaterals


描述 版本 大小
L652x: the most reliable solution for fluorescent lamps
1.0.0 809 KB

样品 & 购买

产品型号 Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
L6520ActiveSO-8Tube_-.611No availability reported, please contact our Sales officeEcopack1PDF
L6520TRActiveSO-8Tape And Reel_-.611No availability reported, please contact our Sales officeEcopack1PDF
L6521ActiveSO-8Tube_-.611No availability reported, please contact our Sales officeEcopack1PDF
L6521TRActiveSO-8Tape And Reel_-.611No availability reported, please contact our Sales officeEcopack1PDF

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(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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