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参数资料
| 型号： | ZL2008EVAL1Z |
| 厂商： | Intersil |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD FOR ZL2008 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.2V |
| 电流 - 输出： | 15A |
| 输入电压： | 12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 615kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ZL2008 |
Application Note 1517
Functional Description
The ZL2008EVAL1Z provides all circuitry required to
demonstrate the features of the ZL2008. The
ZL2008EVAL1Z has a functionally-optimized ZL2008
circuit layout that allows efficient operation up to the
maximum output current. Power and load connections
are provided through plug-in sockets.
A majority of the features of the ZL2008 such as soft-
start delay and ramp times, supply sequencing, voltage
tracking, and voltage margining are available on this
evaluation board. For voltage tracking and sequencing
evaluation, the board can be connected to any other
Zilker Labs evaluation board that supports the Digital DC
(DDC) bus.
Figure 1 shows a functional block diagram of the
ZL2008EVAL1Z board. The SMBus address is selectable
through a jumper on the top side of the board. All power
to the board (VIN and I 2 C bus) must be removed before
changing the jumpers.
The hardware enable function is controlled by a toggle
switch on the ZL2008EVAL1Z board. The power good
(PG) LEDs indicate the correct state of PG when external
power is applied to the ZL2008EVAL1Z board. The right
angle headers at opposite ends of the board are for
connecting a USB to SMBus adapter board or for daisy
chaining of multiple evaluation boards.
Figure 2 shows the operational circuit. The circuit
consists of the ZL2008 IC with its minimal component
count to realize a 15A buck converter. The board layout
has been optimized for thermal performance. Figure 3 is
the board interface circuitry. Figure 4 through Figure 8
show the PCB layout for the board including the board
fabrication notes.
The bill of materials (BOM) and configuration file are also
included for reference.
Operation
PMBus Operation
The ZL2008 utilizes the PMBus protocol. The PMBus
functionality can be controlled via USB from a PC running
the PowerNavigator evaluation software in a Windows XP
or Windows 2000/NT operating system.
Install the evaluation software using the CD included in
the ZL2008EVAL1Z kit.
For board operation, connect the included USB-to-SMBus
adapter board to J10 of the ZL2008EVAL1Z board.
Connect the desired load and an appropriate power
supply to the input and connect the included USB cable
to the PC running the PowerNavigator evaluation
software. Place the ENABLE switch in “DISABLE” and turn
on the power.
The evaluation software allows modification of all ZL2008
PMBus parameters. The ZL2008 device on the board has
been pre-configured as described in this document, but
the user may modify the operating parameters through
2
the eval software or by loading a predefined scenario
from a configuration file.
Use the mouse-over pop-ups for PowerNavigator help.
Refer to Zilker Labs application note AN2033 for PMBus
details.
The ENABLE switch can then be moved to “ENABLE” and
the ZL2008EVAL1Z board can be tested. Alternately, the
PMBus ON-OFF CONFIG and OPERATION commands may
be used.
Quick Start Guide
Stand Alone Operation
1. Set ENABLE switch to “DISABLE”
2. Apply load to VOUT+/VOUT-
3. Connect the USB to SMBus adapter board to J10 of
ZL2008EVAL1Z
4. Connect supplied USB cable from computer to USB
to SMBus adapter board
5. Connect power supply to VIN+/VIN- (supply turned
off)
6. Turn power supply on
7. Set ENABLE switch to “ENABLE”
8. Monitor ZL2008EVAL1Z board operation using an
oscilloscope
USB (PMBus) Operation
1. Set ENABLE switch to “DISABLE”
2. Apply load to VOUT+/VOUT-
3. Connect power supply to VIN+/VIN- (supply turned
off)
4. Turn power supply on
5. Insert the Zilker Labs Eval Kit CD
6. Connect USB to SMBus adapter board to J10 of
ZL2008EVAL1Z
7. Connect supplied USB cable from computer to USB
to SMBus adapter board
- Upon first-time connection, the Found New
Hardware Wizard will appear.
- Windows XP users: Select ‘No’ at prompt to
search the Internet for drivers.
- Follow the steps on the screen to install the
drivers from the CD.
8. Install the PowerNavigator evaluation software by
running setup.exe from the
PowerNavigator_installer folder on the CD.
9. Set ENABLE switch on EVB to “ENABLE”
10.Monitor and configure the ZL2008EVAL1Z board
using PMBus commands in the evaluation software
11.Test the ZL2008EVAL1Z operation using an
oscilloscope and the evaluation software.
AN1517.1
March 15, 2010
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