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Número de pieza | BM81110MUW | |
Descripción | 12V Input Multi-Channel System Power Supply IC | |
Fabricantes | ROHM Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de BM81110MUW (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
No Preview Available ! Datasheet
Power supply IC series for TFT-LCD panels
12V Input Multi-Channel
System Power Supply IC
BM81110MUW
General Description
BM81110MUW is a system power supply for TFT-LCD
panels used for liquid crystal TVs. This IC is
incorporated with Negative and Positive charge pump
controllers and Gate Pulse Modulation (GPM) function. It
also features built-in EEPROM to contain each setting
voltage, soft start time, etc.
Features
■ Step-up DC/DC converter (AVDD)
(Synchronous rectification, built-in load switch)
■ Step-down DC/DC converter 1 (VIO)
(Non-synchronous rectification)
■ Step-down DC/DC converter 2 (VCORE)
(Synchronous rectification)
■ Step-down DC/DC converter 3 (HAVDD)
(Synchronous rectification)
■ Positive charge pump controller (VGH)
■ Negative charge pump controller (VGL)
■ Gate Pulse Modulation (GPM) function
■ Output voltage control by I2C
■ Built-in EEPROM
■ Switching Frequency 750kHz (AVDD, VIO)
■ Switching Frequency 1MHz (VCORE, HAVDD)
Applications
■ TFT-LCD panel
Typical Application Circuit(TOP VIEW)
SW
VGH
Key Specifications
Input voltage range:
AVDD Output voltage range:
VIO Output voltage range:
VCORE Output voltage range:
HAVDD Output voltage range:
VGH Output voltage range:
VGL Output voltage range:
Switching Frequency:
Operating temperature range:
8.6V to 14.7V
13.5V to 19.8V
2.2V to 3.7V
0.8V to 3.3V
4.8V to 11.1V
20V to 35V
-14.5V to -5.5V
750kHz(Typ)
1MHz(Typ)
-40℃ to +85℃
Package
VQFN40W6060A
W(Typ) x D(Typ) x H(Max)
6.00mm x 6.00mm x 0.8mm
AVDD
HAVDD
VCORE
VIO
VIN
EN
PGND2
SWB2
VDD2
CTRL
VINB2
VDD1
SWB1
SWB1
N.C.
VIN
BM81110MUW
VGL
N.C.
SWO
SWI
SW
SW
PGND
PGND
NTC
VL
SWB1
VGL
AVDD
VIN
Θ
Figure1. Application Circuit
○Product structure:Silicon monolithic chip
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This chip
has no designed
1/46
protection against radioactive rays.
TSZ02201-0313AAF00410-1-2
2015.08.10 Rev.002
1 page BM81110MUW
Block Diagram (VGH Trippler)
VIN
AVIN
VL
INTERNAL
REGULATOR
EEPROM
SDA
SCL
A0
HVS
EN
FAULT
I2C
INTERFACE
SEQUENCE
CONTROL
DAC
BOOST
CONVERTER
BUCK
CONVERTER 1
BUCK
CONVERTER 2
BUCK
CONVERTER 3
VGH
REGULATOR
VGL
AGND
VGL
VGL
DRVN
GPM
CTRL
COMP
SWO
SWI
SW
PGND
VINB1
SWB1
VIN
AVDD
VIN
VIO
VDD1
VINB2
SWB2
PGND2
VDD2
VINB3
SWB3
PGND3
VIN
VDD3
DRVP
VGH
NTC
VGHM
RE
VGH
Θ
VCORE
HAVDD
AVDD
SW
SW
VL
SWB1
Figure 4. Block Diagram (VGH Trippler)
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
5/46
TSZ02201-0313AAF00410-1-2
2015.08.10 Rev.002
5 Page BM81110MUW
Typical Performance Curves (Unless otherwise specified, Ta=25℃, AVIN,VINB1,VINB3=12V, VINB2=3.3V, VIO=3.3V,
VCORE=1.8V, AVDD=17.5V, HAVDD=9.0V, VGH=28V, VGL=-7.9V, RL=no load)
8
7
6
5
4
3
EN=L
2 No Switching
1
0
5 6 7 8 9 10 11 12 13 14 15
Input Voltage : VIN [V]
Figure 5. Input Current vs Input Voltage
(EN=L, no switching)
1500
1400
1300
1200
1100
AVDD,VIO Frequency
1000
900
800
700
VCORE,HAVDD Frequency
600
500
5 6 7 8 9 10 11 12 13 14 15
Input Voltage : VIN [V]
Figure 6. Internal Oscillator Frequency vs Input Voltage
VIN=12V (20V/Div)
VIO=3.3V (5V/Div)
VCORE=1.8V (5V/Div)
VGH=28V (10V/Div)
AVDD=15V (10V/Div)
HAVDD=7.5V (10V/Div)
VGL=-7.9V (10V/Div)
VGHM (20V/Div)
10msec/Div
Figure 7. Power-on 1
(VGL driven by VIO switch node)
VIN=12V (20V/Div) VIO=3.3V (5V/Div)
VCORE=1.8V (5V/Div)
VGH=28V (10V/Div)
AVDD=15V (10V/Div)
HAVDD=7.5V (10V/Div)
VGL=-7.9V (10V/Div)
VGHM (20V/Div)
10msec/Div
Figure 8. Power-on 2
(VGL driven AVDD switch node)
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
11/46
TSZ02201-0313AAF00410-1-2
2015.08.10 Rev.002
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet BM81110MUW.PDF ] |
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