ZL2005_14 Datasheet, PDF (1/40 Pages) Intersil Corporation – Digital-DC™ Integrated Power Management and Conversion IC

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February 23, 2011
Digital-DC™ Integrated Power Management and Conversion IC
ZL2005
FN6848.2
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
LDO
POWER
MANAGEMENT
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.
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