THV3056 Datasheet, PDF (4/32 Pages) THine Electronics, Inc. – 3ch Buck/Boost 2ch CP 1ch HVLDO 1ch LVLDO Controller

THV3056_Rev.2.00_E
Pin Description
Pin#
10
12
14
11
13
15
18
19
20
23
24
25
17
46
48
26
27
22
4
5
41
47
Symbol
FB1
FB2
FB3
INV1
INV2
INV3
SS1
SS2
SS3
DTC1
DTC2
DTC3
SS_SW
INV_VGH
NON_VGL
DTC_VGH
DTC_VGL
VREF
SEL1
SEL2
V_VC
VGL_UVP
Function
ch-1,ch-2,ch-3
error amplifier output
Description
Ch-1,2,3 error amplifier outputs for phase compensation by connecting
resistors and capacitors between FB_1,2,3 and INV_1,2,3.
ch-1,ch-2,ch3 error ampli- Ch-1,2,3 error amp inverting inputs. The voltage on INV1 and INV3 are
fier inverting input
1.2V, and INV2 is 0.85V, in the normal operation.
ch-1,ch-2,ch-3 soft start
Soft start pin for ch-1/2/3. Voltage at power-on is ground level. Constant
1mA current source charges capacitors connected to these pins. Soft
start time can be adjusted by external capacitors connected these pins.
On/Off control is available by connecting the external open drain ports
or PG pins.
ch-1,ch-2,ch-3
Dead Time Control
To limit the maximum duty cycle on ch-1,2,3.
See Functional Description “DTC” for detail.
ch-1 soft start of external
PMOS switch
VGH comparator invert-
ing input
Ch-1 external PMOS switch for soft start. Voltage at power-on is
ground level. Constant 1mA current source charges the capacitor con-
nected to this pin. Soft start time of PMOS transistor to VO_1SW can be
adjusted by external capacitors connected this pin. On/Off control is
available by connecting the external open drain ports or PG pins.
VGH comparator inverting input.
The voltage on this pin is 1.2V in the normal operation.
VGL comparator non-
inverting input
VGL comparator non-inverting input.
The voltage on this pin is 0V in the normal operation.
VGH
(charge pump +)control
VGL
(charge pump -)control
VGH, VHL charge pump control pins. When the input voltage is High
level, these pins are On state. Low level, Off state.
Using as charge pump, please set the duty cycle of 50%.
In PFM mode, these pin operate as DTC.
See Functional Description “DTC” for detail.
Reference voltage
Startup sequence select
Reference voltage of 1.2V. Connect this pin with an external capacitor
of 0.01uF for stability.
The maximum load current is 1mA.
Two type of startup sequence are selectable by connecting SEL1 pin to
GND or VREG5 pin. See Functional Description “Startup Sequence”.
Charge pump UVP timer latch Charge pump UVP timer latch On/Off control is available by SEL2 pin.
On/Off control
See Functional Description “SCP” for detail.
Voltage supply
for Vcom output
Voltage supply for Vcom output.
UVP voltage of VGL set pin
UVP voltage can be set optionally by connecting an external resistor to
this pin. Without external resistor, UVP voltage is set at 50% of the ref-
erence voltage.
Copyright©2010 THine Electronics, Inc.
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THine Electronics, Inc.