THV3056 Datasheet, PDF (1/32 Pages) THine Electronics, Inc. – 3ch Buck/Boost 2ch CP 1ch HVLDO 1ch LVLDO Controller

THV3056_Rev.2.00_E
THV3056
3ch Buck/Boost 2ch CP 1ch HVLDO 1ch LVLDO Controller
Description
THV3056 is a 3ch Buck/Boost Controller IC which enables
to design simple & low cost multi-channel power supply
system.
Ch-1(fixed Boost), ch-2 and ch-3(fixed Buck) are PWM
controllers. As to ch-2, the output of 1.2V is available
because the reference voltage of ch-2 is 0.85V.
VGH and VGL are selectable Positive/Negative charge
pumps and PFM controller.
Built-in high voltage LDO and Vcom buffer amplifier
facilitate to design various power supply systems for large
scale TFT panels.
THV3056 achieves easy phase compensation even with a
ceramic capacitor for the output.
SS_1/2/3, SS_SW, DTC1/2/3, DTC_VGH/DTC_VGL and
SCP help to design user defined soft start time, dead time
and timer latch delay time. Two types of startup sequence
are selectable by controlling SEL1 pin.
THV3056 is suitable for power supply system of TFT LCD
bias and system board with multi -channel power supply.
Features
• QFN 64 pin package
• Input Voltage range : 4.2~ 15V
• Push Pull output for direct Power MOS driving
• Ceramic Capacitors are available for output
• Complete PWM mode controller
• Positive/Negative charge pumps (selectable PFM mode)
• Adjustable switching frequency up to 1MHz
• Timer Latch Protection
• System UVLO function
• Adjustable Soft Start time
• Adjustable Timer Latch Delay time
• Adjustable Dead Time Control
• Thermal Shutdown
• Ch-1, Boost converter
• Ch-2, Synchronous Buck converter
• Ch-3, Boost/Buck/Inverting converter
• High voltage LDO
• LDO of 3.3V
• Vcom Buffer Amplifier
Applications
• TFT-LCD Bias power supply
Pin Assignment
OUT1
1
PGND1
2
VO_1SW
3
SEL1
4
SEL2
5
VREG5IN
6
VREG5
7
SYUVLO
8
SCP
9
FB1
10
INV1
11
FB2
12
INV2
13
FB3
14
INV3
15
RT
16
QFN 64PIN
Exposed Pad
(TOP VIEW)
65GNDEXP
48
NON_VGL
47
VGL_UVP
46
INV_VGH
45
VCIN
44
VCFB
43
GNDVC
42
VCOUT
41
V_VC
40
PGND2
39
OUT_L2
38
LL2
37
OUT_H2
36
BST2
35
V_LLDO
34
SS_LLDO
33
OUT_LLDO
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THine Electronics, Inc.