ZL2102 Datasheet, PDF (1/58 Pages) Intersil Corporation – 6A Digital Integrated Synchronous Step-Down DC/DC Regulator with Auto Compensation

6A Digital Integrated Synchronous Step-Down DC/DC
Regulator with Auto Compensation
ZL2102
The ZL2102 is an integrated digital power regulator with auto
compensation and power management functions in a small
package, resulting in a flexible and integrated solution which
can be configured using the Power Navigator graphical user
interface. This synchronous buck converter operates from a
4.5V to 14V input supply and provides from 0.54V to 5.5V
output voltage at up to 6A.
The ZL2102 can be configured for most applications using only
hardware pin straps to adjust switching frequency, output
voltage, UVLO, soft start ramp/delay settings, sequencing
options, and SMBus address. For more advanced
configurations, the ZL2102 supports over 70 PMBus
commands. Output voltage/current is factory calibrated.
Internal synchronous power MOSFETs enable the ZL2102 to
deliver continuous loads up to 6A with high efficiency. An
internal Schottky bootstrap diode reduces discrete component
count. The ZL2102 also supports phase spreading to reduce
system input capacitance.
The ZL2102 uses the SMBus™ with PMBus™ protocol for
communication with a host controller and the Zilker's
proprietary Digital-DC bus for interoperability between other
Zilker Labs devices.
Features
• Integrated MOSFET Switches
• 6A Continuous Output Current
• Adjustable 0.54V to 5.5V Output Range
• 4.5V to 14V Input Range
• Up to 90% Efficiency
• Auto Compensation for Fast Transient Response
• SMBus Compliant Serial Interface
• Snapshot™ Parametric Capture
• Internal Non-Volatile Memory
• Small footprint QFN Package (6mm x 6mm)
Applications
• Servers/storage equipment
• Telecom/datacom equipment
• Power supplies (memory, DSP, ASIC, FPGA)
Related Literature
• AN2010 "Thermal and Layout Guidelines for Digital-DC™
Products"
• AN2035 "Compensation Using CompZL™"
• TB389 "PCB Land Pattern and Surface Mount Guidelines for
QFN Packages"
INTERFACE
HARDWARE
CONTROL
HARDWARE
CONFIG
DDC Bus
SMBus
DDC
V2P5
SCL
VRA
10µF
4.7µF
SDA ZL2102
VR
4.7µF
SALRT
VDDS
PG
MGN
EN
VDDP
BST
CB
0.1µF
CIN
100µF
LOUT
2.2µH
SYNC
VSET
SA
FC
CFG
SS
SW
VSEN
PGND
SGND
DGND
ePAD
COUT
200µF
FIGURE 1. TYPICAL APPLICATION DIAGRAM
VIN
12V
VOUT
3.3V
6A
August 22, 2013
1
FN8440.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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