Intersil ZL2005P, Руководство пользователя

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ZL2005PEV4
ZL2005PEV4DSr1.0 3
Operation
Stand-Alone Operation
The ZL2005PEV4 is easy to setup and operate. It
is configured, out of the box, to provide 1.2V at
10A from a 12V source. All input and output
connections should be made before turning the
input supply on.
When the input power supply is turned on, and
the enable switch is set to enable, the ZL2005P
will output the configured voltage. A load can
be applied to the output and the circuit can be
tested.
PMBus Operation
The ZL2005P utilizes the PMBus protocol. The
PMBus functionality can be accessed via USB
from a PC running the Zilker Labs Evaluation
software on a Windows-XP or Windows-
2000/NT operating system.
Install the Zilker Labs Evaluation software using
the CD included in the ZL2005PEV4 kit or
download it from the web at
www.zilkerlabs.com .
For PMBus operation, connect a USB/SMBus
adaptor (J2) to the EVB (J10). Apply a USB
cable between the USB/SMBus adaptor and the
PC. Connect the output of the ZL2005PEV4 to
the desired load. Then connect an appropriate
power supply to the input. Place the enable
switch in “DISABLE” and turn on the power.
Invoke the ZL2005P interface software.
The Zilker Labs Evaluation software allows
modification of all ZL2005P PMBus parameters.
Manually configure the ZL2005P with the
interface software or load a predefined
configuration from a configuration text file.
Use the mouse-over pop-ups for help with the
Zilker Labs Evaluation software. Refer to the
Zilker Labs Application Note AN13 (Reference
3 on page 21) for PMBus details.
The enable switch can then be moved to
“ENABLE” and the ZL2005P can be tested.
Alternatively, the PMBus commands
ON_OFF_CONFIG and OPERATION may be
used to manipulate the enable state.
Modifying the ZL2005PEV4
In order to design and test an alternative power
train circuit with the ZL2005P, choose a desired
operating conditions and power train. Enter the
selected power design parameters into Zilker
Labs’ PID calculation/simulation tool. The
results from the simulation tool provide
appropriate compensation values to configure the
new ZL2005P circuit. Apply the new power
train circuit to the evaluation board. Power the
board and invoke the evaluation software. Then
configure the new PID coefficients using the
“PMBus: Basic” command page or loading a
configuration text file with the new
compensation coefficients in it.