FP6783 DC-DC Converters Datasheet

FP6783 Datasheet, PDF, Equivalent


Part Number

FP6783

Description

Integrated Multi-Channel DC-DC Converters

Manufacture

Fiti

Total Page 11 Pages
Datasheet
Download FP6783 Datasheet


FP6783
fitipower integrated technology lnc.
FP6783
Integrated Multi-Channel
DC-DC Converters for TFT LCD Panels
Description
The FP6783 is an integrated power supply solution
optimized for medium to large size thin-film transistor
(TFT) liquid crystal displays (LCD’s).
The boost converter operates at a frequency of
1.2MHz. The integrated N-channel FET has a typical
current limit of 4.5A and can support output voltage
up to 18V.
A positive charge pump with an integrated driver can
produce up to 36V of positive gate drive.
The GPM is a flicker compensation circuit to reduce
the coupling effect of gate lines; the gate-shaping
timing is controlled by the timing-controller to
modulate the Gate-On voltage, VGHM. It also can
delay the Gate-On voltage during power-on to
achieve a correct power-on delay time and the falling
time of the Gate-On voltage are programmable by
external capacitor and resistor.
The FP6783 is available in a thin 20-pin 5x5 mm
TQFN green package.
Features
2.5V to 5.5V Input Supply
1.2MHz Switching Frequency
Current-Mode Boost Regulator
Integrated 18V/4.5A FET
Fast Transient Response to Pulsed Load
High Efficiency
GPM Controller with Adjustable Falling Time
Flicker Compensator
Power-on Sequence Control
Over-Temperature Protection
Over-Current Protection
Over-Voltage Protection
Under-Voltage Protection
Charge Pump for VGH Regulation
Charge Pump for VGL Regulation
TQFN-20 Exposed Pad Package
ROHS Compliant
Applications
TFT LCD for Notebook
TFT LCD for Monitor
TFT LCD for TV
Pin Assignments
WQ Package (TQFN-20)(5mm x 5mm)
Ordering Information
FP6783□□□
TR: Tape/Reel
ADJ 1
VIN 2
VIN 3
SW 4
SW 5
20 19 18 17 16
21
6 7 8 9 10
15 VREF
14 FBN
13 AGND
12 DRVP
11 DRVN
C: Green
Package Type
WQ: TQFN-20 (5mm x 5mm)
Figure 1. Pin Assignment of FP6783
FP6783-Preliminary 0.3-NOV-2012
1

FP6783
fitipower integrated technology lnc.
FP6783
Typical Application Circuit
VIN
10
0.1μF
10μH
10μF
330nF
330nF
BAV99
BAV99
VGH
0.22μF
4.7μF
SUP
10μFx3
VGL
VIN
BAV99 330nF
DRVN
0.1μF 10μF
470K
SW
DRVP
FB
COMP
160K
23.7K
0.22μF
FBN FP6783
VREF
SUP
FBP
VGH
CTL
AGND
0
PGND
VGHM
ADJ
1nF
4.7K
10K 0.511K
220pF
0.1μF
27.4K
1.33K
From Tcon
100
2.32K
0.1μF
Figure 2. Typical Application Circuit of FP6783
FP6783-Preliminary 0.3-NOV-2012
2


Features fitipower integrated technology lnc. FP 6783 Integrated Multi-Channel DC-DC Co nverters for TFT LCD Panels Descriptio n The FP6783 is an integrated power sup ply solution optimized for medium to la rge size thin-film transistor (TFT) liq uid crystal displays (LCD’s). The boo st converter operates at a frequency of 1.2MHz. The integrated N-channel FET h as a typical current limit of 4.5A and can support output voltage up to 18V. A positive charge pump with an integrate d driver can produce up to 36V of posit ive gate drive. The GPM is a flicker co mpensation circuit to reduce the coupli ng effect of gate lines; the gate-shapi ng timing is controlled by the timing-c ontroller to modulate the Gate-On volta ge, VGHM. It also can delay the Gate-On voltage during power-on to achieve a c orrect power-on delay time and the fall ing time of the Gate-On voltage are pro grammable by external capacitor and res istor. The FP6783 is available in a thi n 20-pin 5x5 mm TQFN green package. Features  2.5V to 5.5V Inpu.
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