MAX17117EVKIT+ [MAXIM]
High-Voltage Level-Shifting Scan Driver with Gate-Shading Control;
| 型号： | MAX17117EVKIT+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | High-Voltage Level-Shifting Scan Driver with Gate-Shading Control 栅 |
| 文件： | 总10页 (文件大小：731K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-5206; Rev 0; 4/10
MAX17117 Evaluation Kit
General Description
Features
S +2.3V to +5.5V Input Range
The MAX17117 evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount PCB that provides the
voltages and features required for active-matrix, thin-film
transistor (TFT), liquid-crystal display (LCD) applica-
tions. The EV kit contains a high-performance step-up
regulator, a 350mA low-dropout (LDO) linear regulator,
a high-speed operational amplifier (op amp), a positive
charge pump for the TFT gate-on supply, a negative
charge pump for the TFT gate-off supply, and a 7-output
high-voltage, level-shifting scan driver with gate-shading
control.
S Output Voltages
+8.5V Output at 250mA from a +2.7V Input
(Step-Up Switching Regulator)
+23V Output at 20mA (Positive Charge Pump)
-6V Output at 10mA (Negative Charge Pump)
+4.25V High-Current Op Amp Capable of
Delivering 200mA (typ) Short-Circuit Output
Current
S Resistor-Adjustable Switching-Regulator, Op-Amp
The EV kit operates from a DC supply voltage of +2.3V
to +5.5V. The step-up switching regulator is configured
for a +8.5V output providing at least 250mA from a +2.7V
input. The positive charge pump is configured to provide
a +23V output providing at least 20mA. The negative
charge pump is configured to provide a -6V output
providing at least 10mA. The op amp is configured for
+4.25V. The high-voltage, level-shifting scan driver with
gate-shading control is designed to drive the TFT panel
gate drivers.
Output, and LDOO Voltages
S High-Voltage Level-Shifting Scan Driver with
Gate-Shading Control
S 1.2MHz Step-Up Switching Frequency
S Fully Assembled and Tested
Ordering Information
PART
TYPE
MAX17117EVKIT+
EV Kit
+Denotes lead(Pb)-free and RoHS compliant.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
10FF Q10%, 10V X5R ceramic
capacitor (0805)
TDK C2012X5R1A106K
Murata GRM21BR61A106K
1FF Q10%, 16V X5R ceramic
capacitors (0603)
Murata GRM188R61C105K
TDK C1608X5R1C105K
C1
C2, C3, C4
C5
1
3
1
9
C12, C13
C14
2
100pF Q5%, 50V C0G ceramic
capacitor (0603)
Murata GRM1885C1H101J
10FF Q10%, 16V X5R ceramic
capacitors (1206)
Murata GRM31CR61C106K
TDK C3216X5R1C106K
1
8
C15, C25, C27,
C29, C31, C33,
C35, C37
4700pF Q10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H472K
0.22FF Q10%, 50V X7R ceramic
capacitor (0805)
Murata GRM21BR71H224K
TDK C2012X7R1H224K
1FF Q10%, 25V X5R ceramic
capacitor (0805)
Murata GRM21BR71E105K
TDK C2012X5R1E105K
C18
C19
1
1
0.1FF Q10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K
TDK C1608X7R1H104K
C6–C11, C16,
C17, C21
1000pF Q10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H102K
TDK C1608X7R1H102K
_______________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX17117 Evaluation Kit
Component List (continued)
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
3-pin header
JU1
1
1
0.33FF Q10%, 10V X5R ceramic
capacitor (0603)
Murata GRM188R61A334K
TDK C1608X5R1A334K
10FH, 1.85A, 74.4mI inductor
(6mm x 6mm x 3mm)
Sumida CDRH5D28RHPNP-100M
C20
C22
C23
1
1
1
L1
Not installed, 100-position right-
angle header
0.22FF Q10%, 25V X5R ceramic
capacitor (0603)
Murata GRM188R61E224K
TDK C1608X5R1E224K
P1
0
R1
R2
1
1
3
2
102kI Q1% resistor (0603)
17.4kI Q1% resistor (0603)
56.2kI Q1% resistors (0603)
1kI Q5% resistors (0603)
R3, R4, R5
R6, R12
2.2FF Q10%, X5R 25V ceramic
capacitor (0805)
Murata GRM219R61E225K
TDK C2012X5R1E225K
R7, R15, R16,
R17
Not installed, resistors—short
(PC trace) (0603)
0
R8
R9
1
1
62kI Q5% resistor (0603)
51.1kI Q1% resistor (0603)
49.9kI Q1% resistor (0603)
29.4kI Q1% resistor (0603)
49.9I Q1% resistor (0603)
86.6I Q1% resistor (0603)
100kI Q5% resistors (0603)
100I Q1% resistors (1210)
Not installed, resistor (0603)
C24, C26, C28,
C30, C32, C34,
C36, C38, C39
Not installed, ceramic capacitors
(0603)
0
6
R10
1
R11
1
DTS, LX, POS,
RE, RO, SS
PCB mini test points
R13
1
R14
1
1A, 30V Schottky diode (S-Flat)
Central Semi CMMSH1-40 LEAD
FREE
Nihon EP10QY03
Toshiba CRS02(TE85L,Q,M)
R18–R24
R25–R38
R39
7
14
0
D1
1
7-position, low-profile, surface-
mount DIP switch
SW1
1
200mA, 100V dual diodes
(SOT23)
Fairchild MMBD4148SE
(Top Mark: D4)
Central Semi CMPD7000+
(Top Mark: C5C)
High-voltage PWM IC with level
shifters (32 TQFN-EP*)
Maxim MAX17117ETJ+
U1
1
D2, D3, D4
3
1
—
1
1
Shunt
PCB: MAX17117 EVALUATION
KIT+
—
6.2V, 200mW zener diode
(SOD323)
*EP = Exposed pad.
D5
Fairchild MM3Z6V2B
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Central Semiconductor Corp.
Fairchild Semiconductor
631-435-1110
888-522-5372
770-436-1300
847-843-7500
847-545-6700
847-803-6100
949-623-2900
www.centralsemi.com
www.fairchildsemi.com
www.murata-northamerica.com
www.niec.co.jp
Murata Electronics North America, Inc.
Nihon Inter Electronics Corp.
Sumida Corp.
www.sumida.com
TDK Corp.
www.component.tdk.com
www.toshiba.com/taec
Toshiba America Electronic Components, Inc.
Note: Indicate that you are using the MAX17117 when contacting these component suppliers.
2
______________________________________________________________________________________
MAX17117 Evaluation Kit
from a +2.7V input. The step-up switching-regulator
Quick Start
Recommended Equipment
•ꢀ 2.3Vꢀtoꢀ5.5V,ꢀ2AꢀDCꢀpowerꢀsupply
•ꢀ Voltmeters
output voltage can be adjusted up to +15V with different
feedback resistors (see the Output-Voltage Selection
section).
The GHON consists of two positive charge-pump stages
to generate approximately +23V and provides up to
20mA. The VGL consists of a single negative charge-
pump stage configured with a shunt zener diode to
generate approximately -6V and provides up to 10mA.
Loading GHON and VGL reduces the available VMAIN
current proportionally.
Procedure
The MAX17117 EV kit is fully assembled and
tested. Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Verify that a shunt is installed across pins 1-2 of
jumper JU1.
The op-amp output (VOUT) is fixed to +4.25V or can be
reconfigured to other voltages with changes to the volt-
age-divider resistors (see the Output-Voltage Selection
section).
2) Verify that SW1 DIP switches are in the off position.
3) Connect the positive terminal of the power supply
to the VIN pad. Connect the negative terminal of the
power supply to the PGND pad. Set VIN to +3V.
The high-voltage, level-shifting scan driver with gate-
shading control is designed to drive the TFT panel gate
drivers. Its seven outputs swing 40V (max) between
+35V (max) and -15V (min) and swiftly drives capaci-
tive loads. The driver outputs (STH, CKH1–CKH6) swing
between their power-supply rails (GHON and VGL)
according to the input logic levels on their correspond-
ing inputs (ST, CK1–CK6) except during a gate-shading
period. During a gate-shading period, a CKH_ output
driver becomes high impedance, and an internal switch
connected between the CKH_ output’s capacitive load
and either RO or RE closes whenever the state of its cor-
responding CK_ input is logic-low. This allows a portion
of an output’s GHON-to-VGL transition to be completed
by partially discharging its capacitive load through an
external resistor attached to either RO or RE, for a dura-
tion set by the gate-shading period.
4) Turn on the power supply and verify that the step-up
switching regulator output (VMAIN) is +8.5V.
5) Verify that the gate-on supply (GHON) is approxi-
mately +23V.
6) Verify that the gate-off supply (VGL) is approximately
-6V.
7) Verify that the output of the high-speed op amp
(VOUT) is approximately +4.25V.
8) Verify that the outputs of the high-voltage scan-driver
outputs are approximately -6V (= VGL).
Detailed Description of Hardware
The MAX17117 EV kit contains a step-up switching
regulator, a positive two-stage charge pump, a negative
single-stage charge pump, a high-speed op amp, and a
high-voltage, level-shifting scan driver with gate-shading
control. The EV kit operates from a DC power supply
between +2.3V and +5.5V.
For further details, refer to the High-Voltage Scan Driver
section in the MAX17117 IC data sheet.
P1 provides an easy interface to connect external
circuitry containing the ST and CK1–CK6 logic signals
to the EV kit. When driving the ST and CK1–CK6 logic
signals through P1, place all SW1 switches in the on
position.
As configured, the step-up switching regulator (VMAIN)
generates a +8.5V output and provides at least 250mA
Table 1. Jumper JU1 Functions
SHUNT POSITION
ENA PIN
ENA connected to LDOO through resistor R8
ENA connected to ground
EV KIT OUTPUTS
Outputs enabled
(VMAIN = +8.5V)
1-2
Outputs disabled
(VMAIN ~ VIN)
2-3
*Default position.
_______________________________________________________________________________________
3
MAX17117 Evaluation Kit
age range of GHON is limited to +35V. The voltage
difference between GHON and VGL should not exceed
+40V. If VMAIN is set for more than +11V, disconnect
the GHON and VGL pins from the charge-pump outputs.
If operation of the high-voltage scan driver is desired for
VMAIN greater than +11V, power GHON and VGL from
an external supply.
Jumper Selection (JU1)
The EV kit incorporates jumper JU1 to control the chip-
enable control. See Table 1 for jumper JU1 functions.
Output-Voltage Selection
Step-Up Switching-Regulator Output Voltage
(VMAIN)
The EV kit’s step-up switching-regulator output (VMAIN)
is set to +8.5V by feedback resistors R1 and R2. To
generate output voltages other than +8.5V (up to +15V),
select different external voltage-divider resistors R1 and
R2. For instructions on selecting the step-up switching
regulator feedback divider resistors for other output volt-
ages, refer to the Output-Voltage Selection section in the
MAX17117 IC data sheet.
Op-Amp Output Voltage (VOUT)
The EV kit’s op amp is configured internally as a unity-
gain buffer. The voltage at the noninverting input (POS)
is set to half of VMAIN by voltage-divider resistors R4
and R5. To set VOUT to other voltages (up to VMAIN),
select different divider resistors according to the follow-
ing equation:
Note that changing the VMAIN voltage setting changes
the GHON and VGL charge-pump output voltages.
The voltage range of VGL is limited to -15V. The volt-
VMAIN
VOUT
R4 = R5×
−1
4
______________________________________________________________________________________
MAX17117 Evaluation Kit
Figure 1a. MAX17117 EV Kit Schematic (Sheet 1 of 3)
_______________________________________________________________________________________
5
MAX17117 Evaluation Kit
Figure 1b. MAX17117 EV Kit Schematic (Sheet 2 of 3)
6
______________________________________________________________________________________
MAX17117 Evaluation Kit
Figure 1c. MAX17117 EV Kit Schematic (Sheet 3 of 3)
_______________________________________________________________________________________
7
MAX17117 Evaluation Kit
1.0”
Figure 2. MAX17117 EV Kit Component Placement Guide—Component Side
1.0”
Figure 3. MAX17117 EV Kit PCB Layout—Component Side
8
______________________________________________________________________________________
MAX17117 Evaluation Kit
1.0”
Figure 4. MAX17117 EV Kit PCB Layout—Solder Side
_______________________________________________________________________________________
9
MAX17117 Evaluation Kit
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
4/10
Initial release
—
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
10
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
©
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