LED driver can increase reliability of high brightness lamp systems claims Diodes

The ZXLD1370 LED driver controller operates in buck, boost and buck-boost modes and, according to Diodes, combines patent pending control loops and high-side current sensing to ensure accurate current control of LED strings. It has an extended 6 to 60V operating input voltage range and a typical 1% output current tolerance in all topologies. Diodes says that the driver is capable of delivering the high current levels and tight inter-lamp luminance-matching required by high brightness LED systems. The company adds that LED reliability and longevity is improved by active LED thermal management achieved via a dedicated external thermistor input, and by fault diagnosis outputs that report status of LED driver and load. The driver controller, used with an external mosfet, is said to provide a single driver solution capable of supporting a range of LED configurations and current requirements. A dedicated PWM input enables a 1000:1 dynamic dimming range at 1kHz, which Diodes says allows for high accuracy control of colour mixing and 'excellent resolution' at low brightness levels.