|
|
PDF ISL97652 Data sheet ( Hoja de datos )
| Número de pieza | ISL97652 | |
| Descripción | 4-Channel Integrated LCD Supply | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL97652 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
|
No Preview Available !
®
Data Sheet
December 21, 2006
ISL97652
FN9287.0
4-Channel Integrated LCD Supply with
Dual VCOM Amplifiers
The ISL97652 represents a high power, integrated LCD
supply IC targeted at large panel LCD displays. The
ISL97652 integrates a high power, boost converter for AVDD
generation, delay switch, regulated VON and VOFF charge
pumps, VON slicing circuitry, a buck regulator for logic supply
generation and dual high power VCOM amplifiers.
Operating at 650kHz or 1.3MHz, the AVDD boost converter
features a 2.8A boost FET. A short circuit protected AVDD
delay switch is integrated to provide sequencing of the AVDD
output. Feedback is taken from the far side of the delay FET
for improved regulation and an OVP circuit protects output
side components. The boost features programmable
soft-start.
The asynchronous buck converter features an integrated
2.5A FET. It also operates from the 650kHz or 1.3MHz
internal clock and features separate enable and soft-start
control.
The dual charge pump controllers used for VON and VOFF
generation uses the full FOSC switching frequency to allow
the use of small output components for board space
efficiency. VON is further processed through an integrated
VON-SLICE circuit for reduced flicker.
The integrated amplifiers feature high slew-rate and high
output current capability. They are permanently enabled
when AVIN is present.
Available in the 48 Ld 7mmx7mm QFN package, the
ISL97652 is specified for ambient operation over the
-40°C to +85°C temperature range.
Ordering Information
PART NUMBER PART TAPE & PACKAGE PKG.
(Note)
MARKING REEL (Pb-Free) DWG. #
ISL97652IRZ ISL97652IRZ - 48 Ld 7x7 QFN L48.7x7
ISL97652IRZ-T ISL97652IRZ 13” 48 Ld 7x7 QFN L48.7x7
(4k pcs)
ISL97652IRZ-TK ISL97652IRZ 13” 48 Ld 7x7 QFN L48.7x7
(1k pcs)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Features
• 8V to 15V input supply
• AVDD boost up to 19.5V (OVP threshold), with integrated
2.8APEAK FET
• Overvoltage protection (OVP)
• 2A integrated AVDD delay FET, with short circuit protection
• Dual charge pump controllers for VON and VOFF
• VLOGIC buck with integrated 2.5APEAK FET
• VON slicing
• Dual high speed VCOM amplifiers
• 650kHz/1.3MHz switching frequency
• Integrated sequencing
• UVLO and OTP protection
• Thermally enhanced 7x7 QFN package
• Pb-free plus anneal available (RoHS compliant)
Applications
• LCD-TVs (up to 40”)
• Industrial/medical LCD displays
Pinout
ISL97652
(48 LD QFN)
TOP VIEW
POS1 1
OUT1 2
VGL 3
CE 4
VFLK 5
VDPM 6
RE 7
VGHM 8
VGH 9
FBP 10
GND 11
DRVP 12
THERMAL
PAD
36 PGND3
35 PGND2
34 PGND1
33 EN1
32 EN2
31 VC
30 SS
29 DLY2
28 FREQ
27 VDC
26 PVIN2
25 PVIN1
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL97652
Electrical Specifications VIN = 12V, VBOOST = VSUP = 15V, VON = 25V, VOFF = -8V, over temperature from -40°C to +85°C, unless
otherwise stated. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
CMRR
Common-Mode Rejection Ratio
50 70
dB
PSRR
Power Supply Rejection Ratio
70 85
dB
VOH
VOH
VOL
VOL
ISC
SR
Output Voltage Swing High
Output Voltage Swing High
Output Voltage Swing Low
Output Voltage Swing Low
Output Short Circuit Current per amplifier
Slew Rate
IOUT(SOURCE) = 5mA
IOUT(SOURCE) = 50mA
IOUT(SINK) = 5mA
IOUT(SINK) = 50mA
AVIN - 50
AVIN - 450
50
450
300 400
50
mV
mV
mV
mV
mA
V/µs
BW Gain Bandwidth
-3dB gain point
30 MHz
FAULT DETECTION THRESHOLDS
OVP
Overvoltage Protection Threshold
AVDD rising
18.8 19.5 20 V
OVPHYS
Overvoltage Protection Threshold Hysteresis
VLOR
Undervoltage Lockout Threshold
PVIN rising
VLOF
Undervoltage Lockout Threshold
PVIN falling
TOFF
Thermal Shut-Down
Temperature rising
TON Reset after Thermal Shut-Down Temperature falling
Vth_AVDD(FB) AVDD Boost Short Detection
V(FBFBB) falling less than
Vth_VLOGIC(FBB) VLOGIC Buck Short Detection
V(FBB) falling less than
Vth_POUT(FBP) POUT Charge Pump Short Detection
V(FBP) falling less than
Vth_NOUT(FBN) NOUT Charge Pump Short Detection
V(FBN) rising more than
TFD
Fault Delay Time to Chip Turns Off
0.8 V
7.8 8.0 V
7.4 7.6
V
150 °C
100 °C
1.14 V
1.14 V
1.14 V
0.525
V
64 µs
START-UP SEQUENCING
ISS SS, SSB Current
SS, SSB ≤1.5V
6 µA
IDLY
DLY1, DLY2 Current
DLY1, DLY2 <1.5V
6 µA
SSTH1
SS, SSB Voltage to Give Max Current Limit
1.27 V
SSTH2
SS, SSB Voltage to Enable Fault Checking
2.05 V
DELTH1
DEL1, DEL2 Voltage to Give Max Current Limit
1.27 V
DELTH2
DEL1, DEL2 Voltage to Enable Fault Checking
2.05 V
5 FN9287.0
December 21, 2006
5 Page 
ISL97652
Typical Application Diagram
VIN
CIN
3 x 10µF
VIN
CVIN
0.1µF
C2*
100nF
R5
40.2k
L1
6.8µH
PVIN1 PVIN2
FREQ
SUP
REF
CREF
220nF
SW1
SW2
FB
VGL
SWI
SUI
AVDD
R9
100k
C3*
VOFF
COFF
4.7µF
R6
453k
D4
D3
FBN
CN
0.1µF
DRVN
POS1
SWO
VC
SS
DLY1
DLY2
CE
R10
100k
COMMON
BACK-PLANE
NEG1
OUT1
POS2
RE
VGHM
AVDD
TCON BIAS
CB
2x10µF
COMMON
BACK-PLANE
CAVIN
0.1µF 470nF
L2 CB
C21
6.8µH
*
R11
340
D5
C22
* R12
200
CSSB
0.1µF
10k
NEG2
OUT2
AVIN
CBOOT
SWB1
SWB2
VGH
FBP
PGND3
PGND2
PGND1
DRVP
FBB
VFLK
SSB
VDPM
VCB
EN2
VDC GND OGND AGND EN1
RCB
4.7nF CCB
CDC
4.7µF
D1 VMAIN
C11
COUT
3x
10µF
R1
1x100nF 226k
*
CSUI
0.1µF
RC
10k
CE
10nF
CD2
0.1µF
*
C12
R2
20k
CD1
0.1µF
CSS
0.1µF
R3
0
R4 *
CC
4.7nF
AVDD
CAVDD
4 x 10µF
GATE DRIVER
SUPPLY
VON
R7
C4* 232k
CON
4.7µF
RE
10k
R8
C5* 10k
D7
CP
0.1µF
D6
AVDD
*Optional components.
NOTE: Separate PGND and SGND planes must be used, see PCB layout procedure section.
Applications Information
The ISL97652 provides a complete power solution for TFT
LCD applications. The system consists of one boost
converter to generate AVDD voltage for column drivers, one
buck converter to provide voltage to logic circuit in the LCD
panel, integrated VON and VOFF charge pump controllers,
AVDD delay FET, VON-SLICE and dual high speed VCOM
amplifiers. With the high output current capability, this part is
ideal for big screen LCD TV and monitor panel application.
The integrated boost converter and buck converter operate
at either 650kHz or 1.3MHz which allow the use of multilayer
ceramic capacitors and low profile inductor which result in
low cost, compact and reliable system.
Boost Converter
The boost converter is a current mode PWM converter
operating at either 650kHz or 1.3MHz. 650kHz operation
allows operation down to lower duty cycles. It can operate in
both discontinuous conduction mode (DCM) at light load or
when operating duty cycle is lower than the minimum duty
cycle and continuous mode (CCM). In continuous current
mode, current flows continuously in the inductor during the
entire switching cycle in steady state operation. The voltage
conversion ratio in continuous current mode is given by:
V-----B----O----O-----S----T-
VIN
=
------1-------
1–D
(EQ. 1)
Where D is the duty cycle of the switching MOSFET.
11 FN9287.0
December 21, 2006
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet ISL97652.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL97650 | 4-Channel Integrated LCD Supply | Intersil Corporation |
| ISL97650B | 4-Channel Integrated LCD Supply | Intersil Corporation |
| ISL97651 | 4-Channel Integrated LCD Supply | Intersil Corporation |
| ISL97652 | 4-Channel Integrated LCD Supply | Intersil Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |