ZL2106 Datasheet, PDF (1/35 Pages) Intersil Corporation – 6A Digital-DC Synchronous Step-Down DC-DC Converter

Data Sheet
February 19, 2009
ZL2106
FN6852.0
6A Digital-DC Synchronous Step-Down DC-DC Converter
Description
The ZL2106 is an innovative power conversion and
management IC that combines an integrated
synchronous step-down DC-DC converter with key
power management functions in a small package,
resulting in a flexible and integrated solution.
Zilker Labs Digital-DC™ technology enables
unparalleled power management integration while
delivering industry-leading performance in a tiny
footprint.
The ZL2106 can provide an output voltage from
0.54 V to 5.5 V (with margin) from an input
voltage between 4.5 V and 14 V. Internal low
R_DS(ON) synchronous power MOSFETs enable the
ZL2106 to deliver continuous loads up to 6 A with
high efficiency. An internal Schottky bootstrap
diode reduces discrete component count. The
ZL2106 also supports phase spreading to reduce
system input capacitance.
Power management features such as digital soft-
start delay and ramp, sequencing, tracking, and
margining can be configured by simple pin-
strapping or through an on-chip serial port. The
ZL2106 uses the PMBus™ protocol for
communication with a host controller and the
Digital-DC bus for interoperability between other
Zilker Labs devices.
Features
Power Conversion
ƒ Efficient synchronous buck controller
ƒ Integrated MOSFET switches
ƒ 6 A continuous output current
ƒ 4.5 V to 14 V input range
ƒ 0.54 V to 5.5 V output range (with margin)
ƒ ±1% output voltage accuracy
ƒ 200 kHz to 1 MHz switching frequency
ƒ Phase spreading and Fault spreading
ƒ Snapshot™ parametric capture
ƒ Small footprint QFN package (6 x 6 mm)
Power Management
ƒ Digital soft start/stop
ƒ Precision delay and ramp-up
ƒ Power good/enable
ƒ Voltage tracking, sequencing, and margining
ƒ Voltage / current / temperature monitoring
ƒ Output voltage and current protection
ƒ I²C/SMBus interface, PMBus compatible
ƒ Internal non-volatile memory (NVM)
Applications
ƒ Telecom, Networking, Storage equipment
ƒ High-density servers
ƒ Test & Measurement equipment
ƒ Industrial control equipment
ƒ 5V & 12V distributed power systems
Figure 1. Block Diagram
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