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Cold Cathode Fluorescent Lamp (CCFL) Drivers

ITEM. Symbol. Min. TYP. Max. UNIT. Remark. Input Voltage. INV_PWR. 9. 14.8. 21. V DC. Input Current. I in. -. -. 0.65. A. H.V(open). Vs. 1550. -. -. V rms. Lamp Voltage. VL. -. 650. -. V rms. Lamp Current. IL. 6.2. 6.5. 6.8. mA. PWM=100%. IL. 3.0. 3.3. 3.6.

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Cold Cathode Fluorescent Lamp (CCFL) Drivers

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  1. ITEM Symbol Min. TYP. Max UNIT Remark Input Voltage INV_PWR 9 14.8 21 V DC Input Current I in - - 0.65 A H.V(open) Vs 1550 - - V rms Lamp Voltage VL - 650 - V rms Lamp Current IL 6.2 6.5 6.8 mA PWM=100% IL 3.0 3.3 3.6 mA PWM=30% Dis off ON 2.8 3.3 3.6 V Backlight on/off signal OFF 0 0.5 0.8 V Low level PWM Signal INV_PWM 3.0 3.3 3.6 V PWM signal INV_PWM 30 - 100 % PWM duty cycle PWM Frequency F 142 150 158 Hz Lamp Frequency F 45 55 65 KHz Cold Cathode Fluorescent Lamp (CCFL) Drivers INVERTER FOR CCFL ELECTRICAL Requirements Design by Cary.Chen

  2. Part Number 灯管数 输入电压 最大输入电压 偏置供电电压 参考电压 静态静止电流uA 静态工作电流mA 评估板 封装 主要特性 MP1010B 1 6.0V TO 22V 25V NR* 5 10 2.5 EV0037 TSSOP20 TSSOP20F #:Integrated Power Switches #:Open Lamp Regulation #:Current and Voltage Feedback Control #:Logic Level Burst Mode Control #:Supports Open/Short Lamp Protection #:Soft Start #:Output is Short Circuit Protected #:Analog and Burst Mode Dimming MP1026 1 4.5V TO 14V 16V 4.5V TO 5.5V N/A 500 1.8 EV1026EF-00A TSSOP20F #:4.5V to 14V Power Input (VBatt)) #:Current Voltage Feedback Control #:Analog and Burst Mode Dimming MP1038 UP TO 8 10V TO 32V 35V NR* 6 10 3 EV1038DM-03A SOIC28 TSSOP28 #:Fixed Operating Frequency #:Input Voltage Range of 10V to 32V #:Full-Wave Sense Amp #:Integrated Burst Mode Oscillator and Modulator #:Soft-On and Soft-Off Burst Envelope Cold Cathode Fluorescent Lamp (CCFL) Drivers CCFL Driver Product Selection Guide

  3. Features Benefits Resonant Technology This technology ensures the lamp will strike at any temperature and in any environment. In addition no additional components are required for varying the frequency of the lamp. High Efficiency The full bridge technology allows near perfect sine waves for optimum efficiency which results in the maximum light output per watt. This also eliminates the need for high voltage ballast capacitors. Protection All of our devices provide integrated short circuit and open and short lamp protection. Small Form Factor All CCFL IC drivers integrate full bridge architecture using N-Channel MOSFETs, which reduces total solution part count. In addition MPS’ patented circuit architecture creates an efficient and low cost solution. Brightness Our Ics incorporate Analog and PWM dimming techniques, internal oscillators for burst mode and integrated soft-on and soft-off capabilities. Multiple Lamp Capacity MPS has a patented technique for matching lamp currents allowing 2% tolerances Cold Cathode Fluorescent Lamp (CCFL) Drivers CCFL Drivers Features and Benefits

  4. Application Requirements MPS Products PDAs Digital Cameras Handheld Products Video Cameras GPS Systems Copiers High Efficiency Small Form Factor Low Profile Module 2.6 to 6 Volt Operation Up to 2 Watts MP1022A MP1025 Notebooks Web Pads / Tablets Picture Frames eBooks Portable DVD Players POS / ATM Terminals High Efficiency Small Form Factor 6 to 25 Volt Operation(MP1010B) 4.5 to 14V Volt Operation(MP1026) Low Cost Solution Up to 8 Watts MP1010B MP1026 Flat Panel LCD Monitors Automotive Entertainment High / Bright Displays (Daylight Readable) Lamp Matching Multiple Lamp Capability Thermal Management Up to 150 Watts MP1038 Cold Cathode Fluorescent Lamp (CCFL) Drivers CCFL Application Table

  5. Cold Cathode Fluorescent Lamp (CCFL) Drivers MP1010B FEATURES #:Integrated Power Switches #:6.0V to 22V Variable Supply Voltage with Regulated Lamp Current. #:Rated 12W Power Output at 12V Input #:Open Lamp Regulation #:Current and Voltage Feedback Control #:Logic Level Burst Mode Control #:Supports Open/Short Lamp Protection #:Soft-Start #:Short Circuit Protected Output #:High Energy Start Pulse #:Analog and Burst Mode Dimming DESCRIPTION The MP1010B is a power solution IC that offers a true complete solution for driving a Cold Cathode Fluorescent Lamps (CCFL). This Power IC converts unregulated DC voltage to a nearly pure sine wave required to ignite and operate the CCFL. Based on proprietary power topology and control techniques it greatly increases the power conversion efficiency. APPLICATIONS #:LCD Backlight Inverter for Notebook Computers #:Web Pads, GPS, Desktop Displays, Portable DVD, Car Video Display Systems

  6. Cold Cathode Fluorescent Lamp (CCFL) Drivers MP1026 DESCRIPTION The MP1026 is a Power IC that offers a complete solution for driving a Cold Cathode Fluorescent Lamp (CCFL). This Power IC converts unregulated DC voltage to a nearly pure sine wave required to ignite and operate the CCFL. The MP1026 greatly increases power conversion efficiency and supports both analog and burst mode dimming, simplifying the module implementation. The MP1026 offers the following distinct performance advantages: #:More light for less power #:Small board implementation #:Low RF emission #:Low external components cost The MP1026 is suitable for 2-Cell Li-Ion battery applications using 5V, 9V, or 12V adapters as the power source. FEATURES #:4.5V to 14V Power Input (VBatt) #:Increase Transformer Reliability #:Open Lamp Timer and Regulation #:Current and Voltage Feedback Control #:Logic Level Burst Mode Control #:Supports Open/Short Lamp Protection #:Soft-Start #:Outputs are Short Circuit Protected #:Allows Burst-Mode Operation #:Improved Line Transient Response #:Tightened Lamp Current Accuracy

  7. Cold Cathode Fluorescent Lamp (CCFL) Drivers MP1038 DESCRIPTION The MP1038 is a fixed operating frequency inverter controller that controls four external N-Channel power MOSFETs in a full-bridge configuration. The inverter is designed to power one or more cold cathode fluorescent lamps (CCFL) to backlight liquid crystal displays. Its full-bridge architecture converts unregulated DC input voltages to the nearly pure sine waves required to ignite and operate CCFL. For reliable lamp ignition, the operating frequency is set by an external resistor and during startup, is temporarily swept toward the unloaded resonant frequency of the tank. The built-in burst oscillator can be synchronized with an external clock to minimize display scan interference. Burst mode or analog mode dimming is controlled with an external analog signal. Built-in fault management features include an open lamp regulator, a transformer secondary peak current regulator, and a dual-mode fault timer. The secondary over-current timeout can be shortened with external components. Built-in current limits for the external switches protect against inadvertent shorts. The MP1038 is available in TSSOP28 and SOIC28 packages. FEATURES #:Controls Four External, Low Cost, N-Channel MOSFETs #:Fixed Operating Frequency #:Input Voltage Range of 10V to 32V #:Lamp Current and Voltage Regulation #:Full-Wave Sense AmpE #:Analog and Burst Mode Dimming Control #:Integrated Burst Mode Oscillator and Modulator #:Soft-On and Soft-Off Burst Envelope #:Open Lamp Protection #:Secondary Over-Current Protection #:Dual-mode, Fault Timer #:Available in TSSOP28 and SOIC28 Packages

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