NXP 600 V HF-TL lamp drivers UBA2015, UBA2015A and UBA2016A Fluorescent lamp drivers for HF-TL with PFC control, dimming and boost function Specially designed for use with electronic ballasts, and based on NXP’s GreenChip technology, these highly integrated controller ICs support all common lamp types and configurations. Product Features } Non-dimmable fluorescent lamp driver with PFC (UBA2015) } Dimmable fluorescent lamp driver with PFC (UBA2015A) } Dimmable fluorescent lamp driver with boost functionality with PFC (UBA2016A) } Adjustable, current-controlled preheat } Accurate lamp control (±1%) } Protection mechanisms for safe operation of the fluorescent lamp in case of abnormal operating conditions or lamp failure } Cost-effective system solutions Applications } Linear T4, T5, T8, and T12 } Compact fluorescent } Dimmable fluorescent } Boost fluorescent } Multi-lamp } Multi-power } Lamp end-of-life (EOL) detection This new family of fluorescent driver ICs consists of nondimmable mainstream (UBA2015), dimmable (UBA2015A), and dimmable-boosted (UBA2016A) for cost-effective HF-TL system solutions. Each drives a half-bridge circuit made of two MOSFETs with a supply voltage of up to 600 V and a PFC stage using one MOSFET. They feature very low standby power levels (<100 mW), which further enhances energy efficiency. The many built-in protections support all requirements with respect to standards, reliability (including end-of-life protections), and performance. The ICs are available in 20-pin SO and DIP packages, for easy and fast design-in. All feature the adjustable current controlled preheat and accurate lamp current control (±1%). Boost (UBA2016A) Lamps that replace liquid mercury with amalgam, which is a mercury alloy, have long run-up times because the mercury has to be released from the amalgam before the lamp can reach maximum light output. The UBA2016A reduces run-up time by increasing lamp power above nominal at power-on, and then regulating the lamp power gradually to the nominal power level. The result is a run-up time almost similar to mercurybased tube lamps. Boost time can be set in the application. Dimming (UBA2015A, UBA2016A) On the UBA2015A and UBA2016A, a dimming feature supports energy harvesting, which is used in office buildings and factories to reduce energy consumption. The dimming level can be set by applying a DC voltage to the DIM input pin. The controller integrates all the active circuitry, including an operational transconductance amplifier (OTA), for accurate lamp current control. EOL protections As required by IEC-60926, the controllers have end-of-life (EOL) protections. The EOL pin uses a window comparator to sense drift in the DC blocking capacitor due to lamp aging. When the drift becomes high enough, and the EOL pin voltage moves outside the window comparator’s range, the controller enters standby state. A “lamp rectification” feature prevents overheating at the connectors used by the tube light. This is an especially important feature for small-diameter tube lights, such as T4 and T5, which, unlike larger T8 tubes, have less surface area to release heat. Lamp current control Used to operate the lamp to within 1% accuracy. The tolerance Safety features The ballast is shut off when an over-temperature condition occurs, and, to prevent hazardous situations, the controller has open/short protection on selected pins. Burn state indicator In some high-end ballasts, a control signal is used to switch a transistor on or off when the lamp has ignited. On the UBA2015 and UBA2015A, this control signal is available at a pin to indicate the burn state. Lamp-on detect Lamp-on detection limits startup flash if the ballast is set to dimming. To support this feature, the UBA2015A and UBA2016A versions monitor the lamp current and LC tank voltage. In multi-lamp applications, one or more LC tank voltages can be sensed to ensure all lamps are on. of the LC tank components, as well as the bus voltage ripple, are regulated out by the lamp controller. Demo boards For reduced time-to-market, reference designs for dimmable and non-dimmable applications are available. Selection guide UBA2016A block diagram Function / Feature UBA2015 UBA2015A UBA2016A UBA2016A VDD Advantage 5 μA Yes Reduced run-up time OVPFC 1.39 V Dimming Yes Yes Energy harvesting and dimming Yes No flash at power-on while dimmed 1V Yes 14 GPFC SUPPLY AND REFERENCES 5 IREF TEMPERATURE SENSE FBPFCOK PFC CONTROLLER PFCOSP 0.25 V Lamp-on detect GATE DRIVE DEMAG 0.1 V AUXPFC 13 Lamp boost Q S 140 °C R 80 °C 16 VDD PFCOK FBPFC 11 1 mA ton TIMER 1.27 V 13.4 V restart COMPPFC 12 Current-controlled preheat Yes Yes Yes IC off Accurate lamp operation EOL 3 Fixed-frequency preheat Yes Yes Lamp current control Yes Yes Output to indicate burn state Yes Open/short protection on selected pins Yes Over-temperature protection Yes Accurate lamp operation Yes Supports switchable heater transformer circuit Yes Yes Accurate lamp operation without bus voltage ripple Yes 5 μA VFB 4 Yes ign 2.6 μA Safety OCpreheat LOW-SIDE GATE DRIVE 0.5 V OCburn LAMP ON DETECTION 3V HIGH-SIDE GATE DRIVE Yes Yes Yes TIMER 1 SLHB 8 CPT 10 BOOST VCO 100 μA overcurrent 0.5 V 60 kΩ 9 μA 9 μA not burn 5V 1.27 V 26 μA 5V 9 More freedom in layout DIM www.nxp.com © 2012 NXP Semiconductors N.V. All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The Date of release: February 2012 information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and Document order number: 9397 750 17226 may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof Printed in the Netherlands does not convey nor imply any license under patent- or other industrial or intellectual property rights. 17 GLHB VDD 8.5 μA 2.5 V 47 μA SO and DIP package 20 GHHB 18 SHHB NON OVERLAP FLUORESCENT LAMP CONTROLLER VFBlow 80 mV 1V LEVEL SHIFTER HARD SWITCHING/ CAPACITIVE MODE DETECTION OV 1V Safety UVLO on: > 12.4 V off: < 10.0 V end of life OVextra 3.35 V 2.5 V IFB 2 Yes OR 2x 16 μA 19 FSHB brownout 3.0 V 6 CIFB 5V 7 CF 001aam531