mp1010bef MPS, mp1010bef Datasheet

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mp1010bef

Manufacturer Part Number
mp1010bef
Description
Cold Cathode Fluorescent Lamp Driver
Manufacturer
MPS
Datasheet

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MP1010BEF
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The Future of Analog IC Technology
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.
EVALUATION BOARD REFERENCE
TYPICAL APPLICATION
MP1010B Rev. 2.2
9/24/2007
Board Number
EV0037
VBATT
ABRT
DBRT
GND
EN
J1
5
4
3
2
1
F1 / 1A
FUSE
Ren1
Rabr
Rs
Rbosc
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
Rbdr
Cabr
4.0”X x 0.5”Y x 0.4”Z
R
esd
Dimensions
MP1010B
© 2007 MPS. All Rights Reserved.
www.MonolithicPower.com
FEATURES
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
The MP1010B is covered by US Patents 6,633,138, 6,316,881, 6,114,814.
CbtR
Integrated Power Switches
6.0V to 23V 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
LCD Backlight Inverter for Notebook Computers
Web Pads, GPS, Desktop Displays,
Portable DVD, Car Video Display Systems
Rdamp
N/A
Cp
Fluorescent Lamp Driver
T1
Cisb
Cold Cathode
MP1010B
N1
HV
CN1
2
1
1

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mp1010bef Summary of contents

Page 1

... LCD Backlight Inverter for Notebook Computers • Web Pads, GPS, Desktop Displays, Portable DVD, Car Video Display Systems “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. The MP1010B is covered by US Patents 6,633,138, 6,316,881, 6,114,814. CbtR MP1010B www ...

Page 2

... BSTL 10 Exposed Pad for TSSOP20E Only. Connect to AGND. Part Number* Package MP1010BEM TSSOP20 MP1010BEF TSSOP20E * For Tape & Reel, add suffix –Z (eg. MP1010BEM–Z) For RoHS Compliant Packaging, add suffix –LF (eg. MP1010BEM–LF–Z) ELECTRICAL CHARACTERISTICS V = 12V +25°C, unless otherwise noted. ...

Page 3

... Fault Timer Source Current Open Lamp Secondary Overload Enable Voltage Low V Enable Voltage High V Note: 4) This parameter is guaranteed by design. MP1010B Rev. 2.2 9/24/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1010B – COLD CATHODE FLUORESCENT LAMP DRIVER (continued 2. < V < 23V ...

Page 4

... Open Lamp Detect (Lamp Voltage Feedback Shorted Lamp Detect (Secondary Current Feedback). 20 AGND Small Signal Ground Note: 5) For the MP1010BEF, connect the exposed paddle to AGND (Pin 20). MP1010B Rev. 2.2 9/24/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1010B – COLD CATHODE FLUORESCENT LAMP DRIVER (5) . ...

Page 5

... BLOCK DIAGRAM REF 15 T/B 4 BURST BOS 3 DIMMING OSCILLATOR FT 17 PROTECTION COMP 16 MP1010B Rev. 2.2 9/24/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1010B – COLD CATHODE FLUORESCENT LAMP DRIVER INTERNAL REGULATORS RAMP -- + BURST DIMMING CLOCK CONTROL LOGIC SHORT CIRCUIT + -- 1.2V OPEN LAMP ...

Page 6

... DBRT pin directly (Rdbr = 0Ω and remove Cdbr). MP1010B Rev. 2.2 9/24/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1010B – COLD CATHODE FLUORESCENT LAMP DRIVER For an application with either Analog Mode or no dimming, the BOSC pin can be shorted to Analog GND to simplify the circuit ...

Page 7

... V 2 MP1010B Rev. 2.2 9/24/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1010B – COLD CATHODE FLUORESCENT LAMP DRIVER Select a capacitor with less than 93nF capacitance for Csfb and make the FB pin voltage peak value around 0.7V in normal operation. The 0.7mA DC and 0.7mA/KHz AC current values are taken from the UL60950 safety requirement ...

Page 8

... Voltage 0 3ms Figure 2—Input Voltage vs. Enable Sequence MP1010B Rev. 2.2 9/24/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1010B – COLD CATHODE FLUORESCENT LAMP DRIVER Design Guidelines Ccomp is the system compensation capacitor that connects COMP and AGND. A 1.5nF or topology for 2.2nF X7R ceramic cap is recommended. Its value affects the lamp current soft-on rising time and soft-off falling time in burst mode ...

Page 9

... This is to avoid possible transformer arcing during open lamp conditions. For better thermal performance, please use MP1010BEF (with exposed pad). Normally, there will be a large copper area for ground in the bottom PCB layer which can be used for heat dissipation. Connect the paddle to this ground ...

Page 10

... NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. ...

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