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PDF ZL2005 Data sheet ( Hoja de datos )
| Número de pieza | ZL2005 | |
| Descripción | Digital-DC Integrated Power Management and Conversion IC | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Data Sheet
ZL2005
www.DataSheet4U.com
February 18, 2009
FN6848.0
Digital-DC™ Integrated Power Management and Conversion IC
Description
The ZL2005 is an innovative mixed-signal power
management and conversion IC that combines a com-
pact, efficient, synchronous DC/DC buck controller,
adaptive drivers and key power and thermal manage-
ment functions in one IC, providing flexibility and
scalability while decreasing board space requirements
and design complexity. Zilker Labs’ Digital-DC tech-
nology enables a unique blend of performance and
features not available in either traditional analog or
newer digital approaches, resolving the issues associ-
ated with providing multiple, low-voltage power
domains on a single PCB.
The ZL2005 is designed to be a flexible building block
for DC power and can be easily adapted to designs
ranging from a single-phase power supply operating
from a 3.3 V input to a multi-phase supply operating
from a 12 V input. The ZL2005 eliminates the need
for complicated power supply managers as well as
numerous external discrete components.
All operating features can be configured by simple
pin-strap selection, resistor selection or through the
on-board serial port. The PMBus™-compliant
ZL2005 uses the SMBus™ serial interface for com-
munication with other Digital-DC products or a host
controller.
DLY FC ILIM
EN PG (0,1) (0,1) (0,1) CFG UVLO V25 VR VDD
Features
Power Management
• Digital soft start/stop
• Precision delay and ramp-up
• Power good/enable
• Voltage tracking, sequencing and margining
• Voltage/current/temperature monitoring
• I2C/SMBus communication
• Output overvoltage and overcurrent protection
• PMBus compliant
Power Conversion
• Efficient synchronous buck controller
• 3 V to 14 V input range
• 0.6 V to 5.5 V output range
• ± 1% output accuracy
• Internal 3 A drivers support >30 A power stage
• Fast load transient response
• Phase interleaving
• RoHS compliant (6 x 6 mm) QFN package
Applications
• Servers/storage equipment
• Telecom/datacom equipment
• Power supplies (memory, DSP, ASIC, FPGA)
• Point of load converters
V (0,1)
SS (0,1)
VTRK
MGN
SYNC
SCL
SDA
SALRT
POWER
MANAGEMENT
LDO
NON-
VOLATILE
MEMORY
I2 C
PWM
CONTROLLER
MONITOR
ADC
DRIVER
CURRENT
SENSE
TEMP
SENSOR
BST
GH
SW
GL
ISENA
ISENB
SA (0,1)
VTRK VSEN
TACH XTEMP PGND SGND DGND
Figure 1. Block Diagram
Figure 2. Efficiency vs. Load Current
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ZL2005
Table 3. Electrical Specifications
www.DataSheet4U.com
Unless otherwise specified VDD = 12 V, TA = -40oC to +85oC. Typical values are at TA = 25oC. (Continued)
Parameter
Condition
Min Typ Max Unit
Soft start ramp duration range
Set using SS pin or resistor
Configurable via I2C/SMBus
0
0
– 200 ms
– 200 ms
Soft start ramp duration accuracy
– 100 – µs
Logic Input/Output Characteristics
Logic input bias current
EN, PG, SCL, SDA, SALRT,
TACH
During configuration restore
-10
-1
– 10 μA
– 1 mA
MGN input bias current
-1 – 1 mA
Logic input low threshold (VIL)
Logic input OPEN (N/C)
Multi-mode logic pins
Logic input high threshold (VIH)
Logic output low (VOL)
IOL <= 4 mA
Logic output high (VOH)
IOH >= - 2 mA
Oscillator and Switching Characteristics
– – 0.8 V
– 1.4 – V
2 – –V
– – 0.4 V
2.25 – – V
Switching frequency range
200 – 2000 kHz
Switching frequency setpoint
accuracy
Predefined settings
(See table 14)
-5 – 5 %
Maximum PWM duty cycle
Factory default
95 – – %
Minimum SYNC pulse width
150 – – ns
Input clock frequency drift tolerance
Tachometer Characteristics
External clock signal
-13 – 13 %
TACH pulse width
150 – – ns
TACH frequency range
1 – 500 Hz
TACH accuracy
-10 – 10 %
5 FN6848.0
February 18, 2009
5 Page 
4 ZL2005 Overview
ZL2005
4.1 Digital-DC Architecture
The ZL2005 is an innovative mixed-signal power con-
version and power management IC based on Zilker
Labs’ patented Digital-DC technology that provides
an integrated, high performance step-down converter
for a wide variety of power supply applications. Its
unique digital PWM loop utilizes an innovative
mixed-signal topology to enable precise control of the
power conversion process with no software required,
resulting in a very flexible device that is also easy to
use. An extensive set of power management functions
is fully integrated and can be configured using simple
pin connections or via the I2C/SMBus hardware inter-
face using standard PMBus commands. The user con-
figuration can be saved in an on-chip non-volatile
memory (NVM), allowing ultimate flexibility.
Once enabled, the ZL2005 is immediately ready to
regulate power and perform power management tasks
with no programming required. The ZL2005 can be
configured by simply connecting its pins according to
the tables provided in this document. Advanced con-
figuration options and real-time configuration changes
are available via the I2C/SMBus interface if desired,
and continuous monitoring of multiple operating
parameters is possible with minimal interaction from a
host controller. Integrated sub-regulation circuitry
enables single supply operation from any supply
between 3V and 14V with no secondary bias supplies
needed.
Zilker Labs provides a comprehensive set of on-line
tools and application notes to assist with power supply
design and simulation. An evaluation board is also
available to help the user become familiar with the
device. This board can be evaluated as a stand-alone
platform using pin configuration settings. Addition-
ally, a Windows™-based GUI is provided to enable
full configuration and monitoring capability via the
I2C/SMBus interface using an available computer and
the included USB cable.
Please refer to www.zilkerlabs.com for access to the
most up-to-date documentation and the PowerPilotTM
simulation tool, or call your local Zilker Labs’ sales
office to order an evaluation kit.
11
www.DataSheet4U.com
FN6848.0
February 18, 2009
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ZL2005.PDF ] | |
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