19-4916; Rev 0; 8/09
MAX17121 Evaluation Kit
General Description
The MAX17121 evaluation kit (EV kit) is an assembled
and tested circuit board that contains all the components
necessary to evaluate the MAX17121 IC. The MAX17121
is a dual, high-voltage, level-shifting scan driver to drive
the TFT panel integrated gate logic. The driver outputs
swing from -30V to +40V. To save power, complemen-
tary outputs are provided to allow charge sharing during
state changes. The EV kit operates from a DC supply
range from +2.2V to +3.6V and consumes 250FA (typ).
Features
S
Two High-Voltage, Level-Shifting Scan Drivers
S
+2.2V to +3.6V Input Supply Voltage Range (VDD)
S
-30V to +40V Output Swing
S
Demonstrates Output Charge Sharing
S
Evaluates the MAX17121 in 24-Pin, 4mm x 4mm,
Evaluates: MAX17121
Thin QFN Package
S
Fully Assembled and Tested
Ordering Information
PART
MAX17121EVKIT+
TYPE
EV Kit
+Denotes
lead(Pb)-free and RoHS compliant.
Component List
DESIGNATION QTY
DESCRIPTION
0.1FF
Q10%,
50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K
TDK C1608X7R1H104K
1FF
Q10%,
10V X5R ceramic
capacitor (0603)
Murata GRM188R61A105K
TDK C1608X5R1A105K
1FF
Q10%,
50V X7R ceramic
capacitors (1206)
Murata GRM31MR71H105KA
TDK C3216X7R1H105K
0.01FF
Q10%,
100V X7R ceramic
capacitors (0603)
Murata GRM188R72A103K
DESIGNATION QTY
CKVBCS1,
CKVBCS2,
CKVCS1,
CKVCS2, DISH
JU1
R1
R2–R5
R6–R9
U1
—
—
*EP
= Exposed pad.
DESCRIPTION
C1, C2
2
5
Test points, white
1
1
4
4
1
1
1
2-pin header, 0.1in centers
20kI
Q5%
resistor (0603)
200I
Q5%
resistors (1210)
200I
Q5%
resistors (0805)
High-voltage scan driver
(24 TQFN-EP*)
Maxim MAX17121ETG+
Shunt
PCB: MAX17121 EVALUATION KIT+
C3
1
C4, C5
2
C6–C9
4
Component Suppliers
SUPPLIER
Murata Electronics North America, Inc.
TDK Corp.
PHONE
770-436-1300
847-803-6100
WEBSITE
www.murata-northamerica.com
www.component.tdk.com
Note:
Indicate that you are using the MAX17121 when contacting these component suppliers.
_______________________________________________________________
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.
MAX17121 Evaluation Kit
Evaluates: MAX17121
Quick Start
•
•
•
•
+3.3V, 100mA DC power supply (VDD)
+35V, 100mA DC power supply (VON)
-25V, 100mA DC power supply (VOFF)
Voltmeter
7)
Verify the CKV_ and CKVB_ logic per the table
below at the respective test points:
SIGNAL
EN
STV
CPV_
CKV_
H
L
L
Hi-Z
(CS)
Hi-Z
(CS)
H
L
↑
Toggle
Toggle
LOGIC STATE
H
H
L
VOFF
VON
H
H
H
VON
VOFF
L
X
X
VOFF
VOFF
Required Equipment
The MAX17121 EV kit is fully assembled and test-
ed. Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1)
2)
3)
4)
5)
6)
Connect the +3.3V DC power supply to the VDD and
AGND PCB pads.
Connect the +35V DC power supply to the VON and
AGND PCB pads.
Connect the -25V DC power supply to the VOFF and
AGND PCB pads.
Turn on the power supply.
Note that the logic inputs (STV, CPV1, and CPV2)
must be set to AGND or VDD.
Verify the STVP logic per the table below at the
respective test points:
SIGNAL
EN
STV
CPV1
STVP
H
L
X
VOFF
LOGIC STATE
H
H
L
VON
H
H
H
Hi-Z
L
X
X
VOFF
Procedure
CKVB_
Note:
H = VDD, L = GND,
↑
= rising edge, CS = charge-
share state, and X = don’t care.
Detailed Description of Hardware
The MAX17121 EV kit contains all the components nec-
essary to evaluate the MAX17121 IC. The MAX17121 is a
dual, high-voltage, level-shifting scan driver to drive TFT
panel integrated gate logic. The drivers’ outputs swing
from -30V to +40V and two sets of complementary out-
puts are provided to allow charge sharing during state
changes. The EV kit operates from a DC supply range
from +2.2V to +3.6V and consumes 250FA (typ).
The MAX17121 EV kit provides PCB pads to connect the
logic inputs and scan-driver outputs. Test points are also
provided to monitor the charge sharing, EN, and DISH
states. Jumper JU1 is provided to enable/disable the
MAX17121 device (see Table 1).
Table 1. Jumper JU1 Function
SHUNT
POSITION
Installed
Not installed
EN PIN
Connected to VDD
Connected to ground
DESCRIPTION
MAX17121 enabled
MAX17121 disabled
Note:
H = VDD, L = GND, Hi-Z = high impedance, and
X = don’t care.
2
______________________________________________________________________________________
MAX17121 Evaluation Kit
Evaluates: MAX17121
Figure 1. MAX17121 EV Kit Schematic
_______________________________________________________________________________________
3
MAX17121 Evaluation Kit
Evaluates: MAX17121
1.0’’
1.0’’
Figure 2. MAX17121 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX17121 EV Kit PCB Layout—Component Side
1.0’’
Figure 4. MAX17121 EV Kit PCB Layout—Solder Side
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.
4
©
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
2009 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
