MAX14566EEVKIT [MAXIM]
Proven PCB Layout;
| 型号： | MAX14566EEVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Proven PCB Layout PC |
| 文件： | 总10页 (文件大小：1405K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-5835; Rev 0; 4/11
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
Ordering Information appears at end of data sheet.
Component List
_________________________________________________________________ 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.
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
Component Suppliers
SUPPLIER
AVX Corporation
PHONE
WEBSITE
843-946-0238
805-446-4800
888-522-5372
800-348-2496
847-803-6100
www.avxcorp.com
www.diodes.com
Diodes Incorporated
Fairchild Semiconductor
Taiyo Yuden
www.fairchildsemi.com
www.t-yuden.com
TDK Corp.
www.component.tdk.com
Note: Indicate that you are using the MAX14566E when contacting these component suppliers.
device allows a host USB port to support USB Battery
Quick Start
Charging Specification, Revision 1.2-compliant devices
with shorted D+/D- detection, as well as Apple chargers
using internal resistor-dividers for biasing data lines for
Apple-compliant devices. The device also features a
high-performance, Hi-Speed USB switch with low 4pF
(typ) on-capacitance and low 4I (typ) on-resistance
used in the pass-through mode.
Required Equipment
•ꢀ MAX14566E EV kit (USB cable included)
•ꢀ 5V, 2A DC power supply
•ꢀ User-supplied PC with a spare Hi-Speed USB port
•ꢀ USB 2.0 Hi-Speed/full-speed peripheral device (e.g.,
USB 2.0 flash drive)
Jumper JU1 configures the EV kit circuit for USB pass-
through mode or autodetection mode. In pass-through
mode, data signals are routed between USB port J2 to
USB port J1 using 90Idifferential controlled-impedance
traces, and status indicator LED D2 is on. In autode-
tection mode, the device’s DP and DM pins are set for
dedicated charging of the device connected at J1, and
status indicator LED D2 is off. The EV kit circuit utilizes
several jumpers for proper operation when evaluating the
EV kit in pass-through mode or autodetection mode. See
the Pass-Through Mode and Autodetection Mode sec-
tions for additional information.
M
M
•ꢀ Mobile device (e.g., iPhone , iPod , MP3 player, etc.)
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
1) Verify that all jumpers (JU1–JU7) are configured for
pass-through mode (see Table 5).
2) Connect the USB cable from the PC to the USB type-
B port (J2) on the EV kit.
3) Verify that LEDs D2, D4, and D6 are on.
4) Connect a USB 2.0 device to the USB type-A
connector (J1).
The EV kit circuit utilizes the MAX14566E (U1) active-
low CEN (or the MAX14566AE active-high CEN) output
and the MAX14523A (U3) autoretry current-limit switch
for current-limit protection and resetting the periph-
eral device connected at port J1. The switch current-
limit threshold is set to 1.5A, providing larger charging
currents when operating the EV kit using an external
supply. The current-limit threshold can be reconfigured
by replacing resistor R14. Status LED indicators D3 and
D5 provide the status of U3’s ON and FLAG input and
output, respectively. Installed capacitors C6, C7, and
C8 are available at port J1 and are used to simulate a
true USB host output capacitance when operating the
current-limit switch using an external supply at the VIN
and GND PCB pads. Status indicator LED D6 turns on
when valid bus power is available at port J1.
5) Verify that the USB 2.0 device is detected by the PC.
6) Remove the shunt at jumper JU1. Verify that LED D2
turns off and the USB device is no longer detected.
7) Reinstall the shunt at jumper JU1. Verify that LED D2
turns on and the USB 2.0 device is detected by the PC.
8) The EV kit is now ready for further testing.
Detailed Description of Hardware
The MAX14566E EV kit provides a proven layout to
evaluate the MAX14566E family of USB devices that
combines a Hi-Speed USB analog switch with a USB
adapter emulator. The EV kit provides type-A (J1) and
type-B (J2) USB ports for data routing and peripheral
charging. The EV kit requires an active USB port or an
external 5V, 2A DC supply for operation.
The EV kit can also be used to evaluate the MAX14566AE
and MAX14566BE devices. See the Evaluating the
MAX14566BE section for additional information for
configuring the EV kit for pass-through mode or
autodetection mode when evaluating the MAX14566BE.
The device’s autodetection mode automatically identifies
the type of portable device connected using its charger
identification circuit. Requiring no external software, the
iPhone and iPod are registered trademarks of Apple, Inc.
_________________________________________________________________ Maxim Integrated Products
2
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
LED D2 is on. In autodetection mode, LED D2 is off. The
EV kit requires several jumper reconfigurations for USB
pass-through and autodetection modes. See Table 4 for
proper JU1 configuration.
Power-Supply Configuration
The EV kit circuit derives its power from USB port J2
(VBUS) or an external 5V supply applied at the VIN and
GND PCB pads. VBUS or VIN sets the EV kit VHC power-
rail voltage using jumper JU3. VHC is the power source
for the MAX14566E/MAX14566AE/MAX14566BE and the
noninverting buffer driver (U2). LED D4 turns on and is
brightly lit when the VHC power plane is above 3.3V. See
Table 1 for proper JU3 configuration.
See the Evaluating the MAX14566BE section for
configuring the EV kit mode of operation when evaluating
the MAX14566BE.
Pass-Through Mode
In pass-through mode, the device’s positive data lines
(TDP, DP) are shorted together and the negative data lines
(TDM, DM) are shorted together, allowing the routing of
data signals from port J2 to port J1. See Table 5 for proper
jumper configuration for pass-through mode operation.
Jumpers JU4 and JU6 set the 5V bus power for port J1
using VBUS, VIN, or U3_OUT. LED D6 is on when a valid
bus voltage is applied at port J1. In pass-through mode,
the EV kit circuit uses port J2 bus voltage as the power
source. In autodetection mode, the EV kit can use an
external 4.75V to 5.25V power supply connected at VIN
for higher charging current, if required for the device
connected at J1. See Table 2 for proper JU4 and JU6
configuration.
Autodetection Mode
The devices feature autodetection mode for dedicated
chargers and a USB host.
In autodetection mode, the devices monitor the volt-
ages at DM and DP to determine the type of device
attached. If DM R 2.3V (typ) and DP P 2.3V (typ), the
voltage stays unchanged. If DM < 2.3V (typ), the
device’s internal switch disconnects DM and DP from the
resistor-divider and DP and DM are shorted together for
dedicated charging mode. If DP > 2.3V (typ), the internal
switch disconnects DM and DP from the resistor-divider
and DP and DM are shorted together for dedicated
charging mode. Once the charging voltage is removed,
the short between DP and DM is disconnected for normal
operation.
VCC Power (JU2)
Jumper JU2 is available for monitoring the MAX14566E/
MAX14566AE/MAX14566BE VCC input current. Install
a shunt at JU2 for normal operation. Remove the shunt
at JU2 and place an ammeter in series with the jumper
pins to monitor the device supply current. See Table 3 for
proper JU2 configuration.
Modes of Operation
(MAX14566E/MAX14566AE)
Jumper JU1 configures the EV kit circuit for USB pass-
through or autodetection mode by setting the proper
logic level at the device’s CB pin. In pass-through mode,
To configure the EV kit for autodetection mode, see Table 6.
Table 3. VCC Configuration (JU2)
Table 1. VHC Power-Plane Configuration
(JU3)
SHUNT POSITION
EV KIT FUNCTION
Installed
Power applied at VCC input.
SHUNT POSITION
VHC POWER PLANE SET BY
VCC input current monitoring.
Ammeter in series with jumper
pins 1-2.
1-2
2-3
VBUS
VIN
Not installed
Table 2. Power Supply Configuration
(JU4, JU6)
Table 4. EV Kit Operating Modes (JU1)
SHUNT
POSITION
LED D2
STATUS
EV KIT
OPERATION
CB PIN
SHUNT
POSITION
JUMPER
EV KIT FUNCTION
Pass-through
mode. The USB
data transfers
between J2
and J1.
Connected to
VHC supply
through
1-2
VBUS power source for U3 input.
VIN power source for U3 input.
U3_OUT power source for port J1.
JU4
Installed
On
Off
2-3
resistor R5.
1-2
Port J1 power source dependent
on JU4 setting. Current-limit switch
(U3) bypassed.
JU6
Connected
to ground
through
Autodetection
mode. Peripheral
device charging
at J1.
2-3
Not
installed
resistor R6.
_________________________________________________________________ Maxim Integrated Products
3
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
Table 5. Shunt Configuration for Pass-Through Mode (JU1–JU7)
JUMPER
JU1
SHUNT POSITION
EV KIT FUNCTION
Installed
Installed
1-2
Pass-through mode.
JU2
Power applied at the VCC input.
VHC power plane set by VBUS.
VBUS input power source for U3.
JU3
JU4
1-2
Reset function for the MAX14566BE. Shunt should remain uninstalled for
MAX14566E/MAX14566AE evaluation.
JU5
Not installed
JU6
JU7
1-2
U3_OUT power source for port J1.
Not installed
Capacitance load disconnected from port J1.
Table 6. Shunt Configuration for Autodetection Mode (JU1–JU7)
JUMPER
JU1
SHUNT POSITION
Not Installed
Installed
EV KIT FUNCTION
Autodetection mode.
JU2
Power applied at the VCC input.
VHC power plane set by VBUS.
VIN input power source for U3.
JU3
1-2
JU4
2-3
Reset function for MAX14566BE. Shunt should remain uninstalled for
MAX14566E/MAX14566AE evaluation.
JU5
Not Installed
JU6
JU7
1-2
U3_OUT power source for port J1.
Installed
Capacitance load connected to port J1.
Jumper JU4 configures the EV kit for higher charging
currents when using an external supply at the VIN and
GND PCB pads. The EV kit maximum charging cur-
rent is limited to 1.5A using the U3 current-limit switch.
To reconfigure the EV kit to a lower charging current,
replace resistor R14 and use the following equation:
Automatic Peripheral Reset
(MAX14566E/MAX14566AE)
In addition to configuring the EV kit for pass-through or
autodetection mode, jumper JU1 is also used for reset-
ting the peripheral device connected at port J1. To
perform a peripheral reset, remove and then reinstall the
shunt at JU1 (or vice versa).
141400
R14 (kΩ) =
During a reset condition, the MAX14566E’s active-low
CEN output pulses high for 1s. Transistor Q1 turns on,
pulling the U3 ON pin low, resulting in the momentary
turn on of LED D3 and disconnection of the bus power at
port J1 for the 1s period.
I
(mA)
LIM
where I
is the desired current-limit threshold in mA
LIM
and R14 is in kI.
Enable the power supply connected at VIN. Connect
a mobile device with a half-charged battery to the port
J1 type-A connector. Read the value of the current
sourced by the VIN power supply and compare it to the
device charging specification. An unsuccessful charging
recognition shows a current between 100mA and 200mA
for a brief time interval.
For the MAX14566AE, remove Q1 and install a 0I resis-
tor at the 0805 PCB pad R9. During a reset condition, the
MAX14566AE active-high CEN output pulses low for 1s.
The U3 ON pin is pulled low, resulting in the momentary
turn on of LED D3 and disconnection of the bus power at
port J1 for the 1s period.
Note: The EV kit works in autodetection mode when
using VBUS as the sole power source. Most PCs
supply more than 500mA; however, VBUS may be
current limited to 500mA due to the USB current-limit
specifications. When operating the EV kit using VBUS,
verify that a shunt is not installed at jumper JU7 (capaci-
tors C6, C7, and C8 disconnected from port J1).
Evaluating the MAX14566BE
The MAX14566BE can be evaluated by replacing U1
with the MAX14566BE. The MAX14566BE has two
digital inputs (CB and CB1) to configure the EV kit circuit
for pass-through mode, autodetection mode, or forced
dedicated-charge mode. In forced dedicated-charge
mode, DP and DM are always shorted.
_________________________________________________________________ Maxim Integrated Products
4
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
Automatic Peripheral Reset (MAX14566BE)
Jumper JU5 is available for resetting the peripheral
device connected at port J1 by disabling the current-limit
switch and disconnecting the bus power from port J1.
Install a shunt at JU5 and then remove the shunt at JU5
to perform a peripheral reset at port J1. LED D3 remains
on while the shunt is installed at JU5. See Table 8 for JU5
configuration.
The EV kit requires a slight modification when evaluating
the MAX14566BE device. To evaluate the MAX14566BE,
perform the following:
•ꢀ Remove transistor Q1 or resistor R9
•ꢀ Install a 0I 0603 resistor at R2
Jumpers JU1 and JU8 configure the EV kit for pass-
through, autodetection, or forced dedicated-charge
mode. See Table 7 for proper JU1 and JU8 configuration.
Table 7. MAX14566BE Operating Modes (JU1, JU8)
SHUNT POSITION
MAX14566BE OPERATING MODE
JU1 (CB)
Not installed
Not installed
Installed
JU8 (CB1)
2-3
1-2
X
Autodetection mode
Forced dedicated-charge mode (DP/DM shorted)
Pass-through mode
X = Don’t care.
Table 8. MAX14566BE Peripheral Reset (JU5)
SHUNT
LED D3
STATUS
U3 ON PIN
POSITION
EV KIT OPERATION
Reset condition: J1 bus power removed.
Power applied at J1.
Installed
Connected to ground through resistor R10.
On
Connected to VBUS or VIN through series
resistors R8/R10.
Not installed
Off
Table 9. Jumper Descriptions (JU1–JU8)
JUMPER
SHUNT POSITION
Installed*
Not installed
Installed*
Not installed
1-2*
DESCRIPTION
Pass-through mode. USB data transfer between J2 and J1.
Autodetection mode. Peripheral device charging at J1.
Power applied at the VCC input.
JU1
JU2
JU3
JU4
VCC input current monitoring. Ammeter in series with jumper pins 1-2.
VHC power plane set by VBUS.
2-3
VHC power plane set by VIN.
1-2*
VBUS input power source for U3.
2-3
VIN input power source for U3.
Installed
MAX14566BE evaluation (reset condition): J1 bus power removed.
MAX14566BE evaluation: Power applied at port J1.
Note: The shunt should remain uninstalled when evaluating the MAX14566E and
MAX14566AE.
JU5
Not installed*
1-2*
2-3
U3_OUT power source for port J1.
JU6
JU7
JU8
Port J1 power source dependent on jumper JU4 setting. Current-limit switch (U3) bypassed.
Capacitance load connected to port J1.
Installed
Not installed*
1-2*
Capacitance load disconnected from port J1.
MAX14566BE evaluation. Sets the MAX14566BE operating modes with jumper JU1
(see Table 7).
2-3
*Default position.
_________________________________________________________________ Maxim Integrated Products
5
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
Figure 1. MAX14566E EV Kit Schematic
_________________________________________________________________ Maxim Integrated Products
6
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
1.0’’
1.0’’
Figure 3. MAX14566E EV Kit PCB Layout—Component Side
Figure 2. MAX14566E EV Kit Component Placement Guide—
Component Side
1.0’’
Figure 4. MAX14566E EV Kit PCB Layout—GND Layer 2
_________________________________________________________________ Maxim Integrated Products
7
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
1.0’’
1.0’’
Figure 5. MAX14566E EV Kit PCB Layout—PWR Layer 3
Figure 6. MAX14566E EV Kit PCB Layout—Solder Side
_________________________________________________________________ Maxim Integrated Products
8
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
Ordering Information
PART
TYPE
MAX14566EEVKIT#
EV Kit
#Denotes RoHS compliant.
_________________________________________________________________ Maxim Integrated Products
9
MAX14566E Evaluation Kit
Evaluates: MAX14566AE/MAX14566BE/MAX14566E
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
4/11
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
10
©
2011 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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