MP1011A [MPS]
Cold Cathode Fluorescent Lamp Driver; 冷阴极荧光灯驱动器
| 型号： | MP1011A |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Cold Cathode Fluorescent Lamp Driver |
| 文件： | 总6页 (文件大小：128K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP1011A
Cold Cathode Fluorescent Lamp Driver
General Description
Features
The MP1011A is a Power IC offering a
complete solution for driving one or more
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 patented control techniques, it
greatly increases the power conversion
efficiency. The MP1011A supports both analog
and burst mode dimming without any additional
external components. The MP1011A offers four
distinct performance advantages:
·
·
Integrated power switches
6.0 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
Thermal Shutdown
Supports Open/Short Lamp protection
Soft Start
Output is short circuit protected
Low lamp operating voltage for increasing
transformer or using smaller transformer
Allows Burst-Mode Operation
No ballast capacitor required
1. More light for less power
2. Small board implementation
3. Low EMI emission
4. Low cost off the shelf components
·
·
Ordering Information
Applications
Part Number*
MP1011EMA
Package
TSSOP 20 pin
Temperature
-20°C to + 85°C
LCD backlight inverter for large portable
or desktop display.
* For Tape & Reel use suffix - Z (e.g. MP1011EMA-Z)
Typical Application Circuit:
1
MPS, Inc 3777 Stevens Creek Blvd.
Suite 400 Santa Clara, 95051-7364 USA
Revision 1.7
April, 2001
Tel (408) 243-0088, Fax (408) 243-0099
www.monolithicpower.com
MP1011A
Cold Cathode Fluorescent Lamp Driver
Absolute Maximum Ratings:
Vcc
Power Dissipation
Recommended Operating Conditions:
Input Voltage Vcc
Brightness Voltage
Enable
6.0V to 22V
25 V
1.0 W
0 to 2.0V
0 to 5.0 V
Logic Inputs
-0.7 V to 6.8V
140° C/W
Operating Frequency
Operating Temperature
20KHz to 90KHz
-20° C to + 85° C
Thermal resistance
Junction Temperature
Lead Temperature (Solder)
Operating Frequency
Storage Temperature
150° C
260° C
150KHz
–55° C to 150° C
Electrical Characteristics (Unless otherwise specified Vcc=12v, Ta=25° C)
Parameters
Symbol
Condition
Min
Typ Max Units
Reference Voltage
Output Voltage
Reference Current
Line Regulation
Load Regulation
Vref
Iref
Iref=3mA
4.85
5.1
5.35
3.0
30
V
mA
mV
mV
6.5V < VCC < 22 V
0 < Ire < 3.0 mA
30
Voltage Supply
Supply Current (quiescent) Icc (off)
Supply Current (operating) Icc (on) 6.0V < Vcc < 22V
10
2.5
22
mA
mA
V
1.8
(Note 2)
Operating Range
Vcc
6.0
Shutdown Logic
Thermal Shutdown
Open Lamp Detect
Enable Voltage Low
Enable Voltage High
Burst Voltage Low
Burst Voltage High
145
1.2
°C
V
V
V
V
Vol
Vil
Vih
Vil
Vih
1.0
2.0
2.4
1.4
0.6
0.8
V
Output Drivers
On Resistance
Short Circuit Current
Operating Frequency
Zero-Crossing Voltage
Ton(min)
(Note 1)
Ron
Isc
0.10
0.12 0.15
4
W
A
KHz
mV
20
0
500
60
90
Vzc
6
10
Vcomp=0V, Vcc = 22V
Vcomp=0V, Vcc = 6V
625
750 nS
Ton(min)
900 1200 1500 nS
Brightness Control
Sense Full Brightness
Sense Full Dim
Lamp Current Regulation
Note 1: This parameter is guaranteed by design.
Vsense Vbright= 2.0V
Vsense Vbright= 0V
6.0v < Vcc < 22v
357
83
375
92
2
393 mV
101 mV
5
%
Note 2: See Leakage Inductance Guide lines for Minimum Operating Voltage (Table 2).
2
MPS, Inc 3777 Stevens Creek Blvd.
Suite 400 Santa Clara, 95051-7364 USA
Tel (408) 243-0088, Fax (408) 243-0099
www.monolithicpower.com
Revision 1.7
April, 2001
MP1011A
Cold Cathode Fluorescent Lamp Driver
Pin Description
Pin #
Pin Name Pin Function
1
2
3
Bright
I sense
Burst
Dimming Control: 0 volts is full Dim and 2V is full brightness
Lamp current feedback sense input.
To use for burst mode, the pin is switched between 0V and 5V
When not using burst mode, then pin must be tied to ground.
The enable will turn the chip on/off. Do not float this pin.
Internally generated MOSFET gate drive supply voltage
Power Supply input
4
5
6
Enable
Vdr
Vcc
7
OutL
Output to Load ( tank circuit )
8
NC
No Connect
9
PGND
BstL
BstR
PGND
NC
OutR
Vcc
Vdr
Power Ground
10
11
12
13
14
15
16
17
18
19
20
Regulated output voltage for boost cap on phase L
Regulated output voltage for boost cap on phase R
Power Ground
No Connect
Output to Load ( tank circuit )
Power Supply input
Internally connected to Vdr (pin 5). This pin must be left open.
Reference voltage output
Vref
Comp
Loop compensation cap
Open lamp Latching shutdown for open lamp or low battery
AGND Small signal ground
Functional Block Diagram:
Rsense
A
CbstL
CbstR
Vcc
Vcc
Bright
Comp
Isense
Vref
Vr
VdrL
BstL
VccL OutL OutR
VccR
BstR VdrR
Vr
6.2 Volt
Regulator
.
.
Driver
Driver
Driver
Mp1
Mn1
Mp2
Mn2
Mp3
A2
5.1 Volt
Regulator
A1
+
-
+
-
Thermal
Shutdown
Driver
.
.
.
Control
Logic
.
Current
Sensing
.
.
.
.
Ton
C1
+
-
CT
Open Lamp
Enable Burst
AGND
PGND
PGND
A
3
MPS, Inc 3777 Stevens Creek Blvd.
Suite 400 Santa Clara, 95051-7364 USA
Tel (408) 243-0088, Fax (408) 243-0099
www.monolithicpower.com
Revision 1.7
April, 2001
MP1011A
Cold Cathode Fluorescent Lamp Driver
Truth Table
Enable Burst Output L /Output R
L
H
L
X
H
X
L
High Z
0 volts ( Standby)
High Z
H
Normal Operation
Reference Design for Burst Mode Operation with Open Lamp Regulation and Shutdown
See Note
Below
Q1
Optional. Used to meet UL
requirements.
D1a
Rsd
Rolpu
C_olpu
D1
Q2
Cul
C_sd
D1b
Rul1
Rul2
C_comp
C_vref
C_opv
C_para
JP1
C_vccR
F1
Vcc
Burst
Enable
Gnd
C_vcc
4
3
2
1
FUSE
C_bstR
A
4 HEADER
Rser
J1
C_ser
1
5
8
Lamp(+)
T1
1
2
4
CON2
MP1011
Rbleed
C_bstL
D2b
C_vccL
C_vdrL
D2a
Ren1
Ren2
C_en
C_sense
Rsense
A
A
Note:This circuitry is for 'lamp-out'
detection. If this feature is not needed,
remove the outlined components, short the
upper side of C para to Gnd and short
pins 17 and 19 of the MP1011.
For additional reference designs, please see MP1011UG demo board user’s guide
4
MPS, Inc 3777 Stevens Creek Blvd.
Suite 400 Santa Clara, 95051-7364 USA
Tel (408) 243-0088, Fax (408) 243-0099
www.monolithicpower.com
Revision 1.7
April, 2001
MP1011A
Cold Cathode Fluorescent Lamp Driver
Table 1 Bill of Materials
Item
Qty
Description
Vendor / Part #
Designation
Resistors
1
2
3
4
5
6
7
8
1
1
1
2
1
1
1
1
Rbleed
Ren1
Ren2
Rsd, Rolpu
Rsense
Rser
4.3KW, ±5%, SMD, 0805
100KW, ±5%, SMD, 0805
100KW, ±5%, SMD, 0805
1MW, ±5%, SMD, 0805
140W, ±1%, SMD, 0805
1KW, ±5%, SMD, 0805
2MW, ±5%, SMD, 0805
280KW, ±5%, SMD, 0805
(For UL)
(For UL)
Rul1
Rul2
Capacitors
9
2
2
1
1
1
1
1
1
2
1
1
1
1
10nF, 50V, Y5V, SMD
10nF, 16V, X7R, SMD
100pF 50V NPO
1uF 6.3V X7R
6.8nF 16V X7R
C_bstL, C_bstR
C_olpu, C_comp
C_en
C_sd
C_opv
C_para
C_sense
C_ser
C_vccR, C_vccL
C_vcc
C_vdrL
10
11
12
13
14
15
16
17
18
19
20
21
10pF, 3KV
0.22uF, 16V, Y5V, (optional)
2X.47uF 16V X7R
1uF 25V Y5V
10uF, 25V, Y5U, SMD, 1210
220nF, 10V Y5V, SMD
0.1uF, 10V, X7R, SMD
100nF, 10V, Y5Y, SMD
C_vref
Cul
(for UL)
Semiconductors
22
23
4
2
Diode, BAV99L
Transistor, bipolar, 2N3904, SMD
D1b, D1a, D2b, D2a
Q1, Q2
Integrated Circuits
24
25
1
MP1011A, 20-pin TSSOP
Monolithic Power Systems
U2
T1
Magnetics
1
Transformer*
Hardware
Fuse, 1A
26
1
F1
*Transformer Sources:
Company
Part #
Location
Contact Info
Toko
BLC103B
Saitama-Ken, Japan
http://www.toko.co.jp
+81-492-791611
Darfon Electronics Corp.
FDK
TMP
Contact Vendor
CD-T-0836-520
Contact Vendor
Taoyuan 333, Taiwan
Yamaguchi, Japan
Taipei, Taiwan
+886-3-329-4141
http://www.fdk.co.jp
+886-2-8667-2081
5
MPS, Inc 3777 Stevens Creek Blvd.
Suite 400 Santa Clara, 95051-7364 USA
Tel (408) 243-0088, Fax (408) 243-0099
www.monolithicpower.com
Revision 1.7
April, 2001
MP1011A
Cold Cathode Fluorescent Lamp Driver
Table 2: Leakage Inductance Guide Lines for Minimum Operating Voltage
Minimum Operating Supply
Recommended Maximum Primary
Leakage Inductance*
38mH
Voltage
6
7
8
9
42mH
45mH
47mH
49mH
10
* If the maximum primary leakage cannot be met, consult factory for alternatives.
Packaging Information
0.019(0.500)
0.031(0.800)
PIN
1
IDENT
0.169
0.177
0.246
0.258
(4.300)
(4.500)
(6.250)
(6.550)
1
OPTION BTM. E-PIN WITH THAILAND.
0.252(6.400)
0.259(6.600)
GAGE PLANE
0.039(1.000)
0.047(1.200)
0.031(0.800)
0.041(1.050)
o
0.002 (0.050)
0.006 (0.150)
2
0.004(0.090)
0.008(0.200)
0 - 8
0.010
0.007(0.190)
0.012(0.300)
0.018 (0.450)
0.029 (0.750)
(0.254)
6
MPS, Inc 3777 Stevens Creek Blvd.
Suite 400 Santa Clara, 95051-7364 USA
Tel (408) 243-0088, Fax (408) 243-0099
www.monolithicpower.com
Revision 1.7
April, 2001
相关型号：
MP101INS
QUARTZ CRYSTAL RESONATOR, 10 MHz, ROHS COMPLIANT, RESISTANCE WELD, METAL, HC-49/U, 2 PIN
CTS
MP101SLV
QUARTZ CRYSTAL RESONATOR, 10 MHz, ROHS COMPLIANT, RESISTANCE WELD, METAL, HC-49/U, 2 PIN
CTS
MP101SM
QUARTZ CRYSTAL RESONATOR, 10 MHz, ROHS COMPLIANT, RESISTANCE WELD, METAL, HC-49/U, 2 PIN
CTS
©2020 ICPDF网 联系我们和版权申明