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Description
The ZL2005P is an innovative mixed-signal
power management and conversion IC that
combines a compact, efficient, synchronous buck
controller, adaptive drivers and key power and
thermal management functions in a single
package. The ZL2005PEV4 platform allows
evaluation of the features in the highly-
configurable ZL2005P via the SMBus interface
using
PMBus™
commands.
command set is accessed by using Zilker Labs
evaluation software from a PC running Microsoft
Windows.
This evaluation board is meant to enable rapid
evaluation of the functionality of the ZL2005P in
a 10 Amp configuration. It has been optimized for
ease of evaluation across a wide range of input
and
output conditions.
platform is provided as a reference design.
POWER IN
SMBus
The
PMBus
This
ZL2005PEV4
EN
ZL2005P
Address
select
Figure 1. Block Diagram
Features
PMBus control via SMBus
Pin-strap selection for stand-alone operation
V
settable from +0.8V to +3.3V
OUT
R
sensing
DS(ON)
Convenient power connection
Onboard enable switch
Power good indicator
External temperature sensor
Target Specifications
This board has been designed for the following
conditions:
V
= 12V (Board range 4.5V to 13.2V)
IN
V
= 1.2V (Board range is 0.8V to 3.3V)
OUT
I
= 0A - 10A
OUT
F
= 600kHz
SW
Output ripple: < 1%
Dynamic response 3% (7.5A - 10A step load) @ 2.5V
Temperature: 25°C
POWER OUT

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Summary of Contents for Intersil ZL2005P

  • Page 1 This evaluation board is meant to enable rapid • = 12V (Board range 4.5V to 13.2V) evaluation of the functionality of the ZL2005P in • = 1.2V (Board range is 0.8V to 3.3V) a 10 Amp configuration. It has been optimized for •...
  • Page 2: Functional Description

    J12. The SA1 pin is strapped The ZL2005PEV4 provides the circuit required by an 11k resistor to ground. The J12 jumper to demonstrate the features of the ZL2005P in a applies a different resistor to the SA0 pin to 10Amp configuration. The ZL2005PEV4 has a achieve the indicated SMBus address settings.
  • Page 3: Operation

    ZL2005P, choose a desired operating conditions and power train. Enter the When the input power supply is turned on, and the enable switch is set to enable, the ZL2005P selected power design parameters into Zilker Labs’ PID calculation/simulation tool. The will output the configured voltage.
  • Page 4: Stand-Alone Operation

    7. Invoke “Zilker_Labs_Eval” from the Start 4. Select a SMBus address with the jumper on menu under Zilker Labs 8. Monitor and configure EVB using the informative pages in the evaluation software 9. Test the ZL2005P operation Connect input Connect load voltage here here...
  • Page 5 ZL2005PEV4 Schematics Figure 3. ZL2005P Circuit ZL2005PEV4DSr1.0...
  • Page 6 ZL2005PEV4 Figure 4. ZL2005P Interface ZL2005PEV4DSr1.0...
  • Page 7: Board Layout

    ZL2005PEV4 Board Layout Figure 5. PCB – Silk Screen Top ZL2005PEV4DSr1.0...
  • Page 8 ZL2005PEV4 Figure 6. PCB – Top Layer ZL2005PEV4DSr1.0...
  • Page 9 ZL2005PEV4 Figure 7. PCB – Inner Layer 1 ZL2005PEV4DSr1.0...
  • Page 10 ZL2005PEV4 Figure 8. PCB – Inner Layer 2 ZL2005PEV4DSr1.0...
  • Page 11 ZL2005PEV4 Figure 9. PCB – Bottom Layer (Top view) ZL2005PEV4DSr1.0...
  • Page 12 ZL2005PEV4 Figure 10. PCB – Silk Screen Bottom (Top View - reversed) ZL2005PEV4DSr1.0...
  • Page 13: Bill Of Materials

    CRCW040223K7FKED 23.7k SM0402 VISHAY 26.1k SM0402 VENKEL CR0402-16W-2612FT 28.7k SM0402 VISHAY CRCW040228K7FKED SW_SPDT SW_TOG_ULTRAMIN_SPDT G-13AP-RO ZL2005P MLF36 Zilker Labs ZL2005P MIC2920A-3.3BS SOT223_1234_FLD Micrel MIC2920A-3.3WS MPWB-ZL2005-016 J12-Addr22,JP1-ENbus CONN JUMPER SHORTING GOLD SULLINS SSC02SYAN SCREW MACHINE PHILLIPS 4-40X1/4 BUILDING FASTENERS PMS 440 0025 PH STANDOFF RD 4-40THR .750"...
  • Page 14 ZL2005PEV4 ZL2005P Characterization Data The following data was acquired using a ZL2005PEV4 rev 2 evaluation board. Test 1: Efficiency Efficiency data was collected for several output voltages for input voltages of 5 V and 12 V. Note that this data is for informational use only, as the board is optimized for 12 V input and 1.2 V output operation.
  • Page 15 ZL2005PEV4 Efficiency VIN=12V IOUT (Amp) Vout=1V Vout=1.2V Vout=1.5V Vout=1.8V Vout=2.5V Vout=3.3V Figure 12. Efficiency Test, V = 5 V, f = 600 kHz ZL2005PEV4DSr1.0...
  • Page 16 ZL2005PEV4 Test 2: Ramp-Up/Ramp-Down Characteristics Ramp-up and ramp-down data was acquired based on a nominal output voltage of 1.5 V and a preset ramp-up and ramp-down period of 10 ms. Ramp up 10ms VOUT=1.5V 1.75 1.25 0.75 0.25 10.0 20.0 30.0 40.0 50.0...
  • Page 17 ZL2005PEV4 Ramp Down 10ms VOUT=1.5V 1.75 1.25 0.75 0.25 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 Time in ms Ramp Down Amplitude (Volts) Figure 14. Ramp-Down Characteristic Test Results, Vin = 12 V, Vout = 1.5 V, Iout = 1 A ZL2005PEV4DSr1.0...
  • Page 18 ZL2005PEV4 Test 3: Dynamic Load Response For the dynamic load response test, the circuit was set to a nominal output voltage of 2.5 V and an input voltage of 6 V. A 7.5 A to 10 A load step (rate of 2.5 A/µs) was applied and then released, and the deviation from nominal output was captured in the charts below.
  • Page 19 ZL2005PEV4 Default Configuration Text The following PMBus commands have been loaded and stored into the Default Store of the ZL2005P device. Each PMBus can be accessed with the Zilker Labs Evaluation software. The # symbol is used for a comment line.
  • Page 20 ZL2005PEV4 IOUT_SCALE 3.65 IOUT_CAL_OFFSET -0.7 #Set temperature compensation at 4000ppm/ C internal temp sensor TEMPCO_CONFIG 0x28 #NLR_CONFIG Enable,2.5%,No Outer,3.0%,1,7,0 NLR_CONFIG 0xc530 #VOUT_DROOP #mV/A STORE_DEFAULT_ALL RESTORE_DEFAULT_ALL ZL2005PEV4DSr1.0...
  • Page 21: Revision History

    ZL2005PEV4 References AN10 – ZL2005 Thermal and Layout Guidelines for the ZL2005, Zilker Labs, Inc., 2007. ZL2005P Data Sheet, Zilker Labs, Inc., 2007. ™ AN13 – ZL2005 and PMBus , Zilker Labs, Inc., 2007. Revision History Date Rev. 1-29-2008 Initial Release...
  • Page 22 ZL2005PEV4 Zilker Labs, Inc. 4301 Westbank Drive Building A-100 Austin, TX 78746 Tel: 512-382-8300 Fax: 512-382-8329 www.zilkerlabs.com © 2008, Zilker Labs, Inc. All rights reserved. Zilker Labs, Digital-DC and the Zilker Labs Logo are trademarks of Zilker Labs, Inc. All other products or brand names mentioned herein are trademarks of their respective hold- ers.

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