ZL2004-01 Datasheet, PDF (1/6 Pages) Intersil Corporation – Adaptive Digital DC-DC Controller with Current Sharing

Data Sheet
February 18, 2009
ZL2004-01
FN6847.0
Adaptive Digital DC-DC Controller with Current Sharing
Description
The ZL2004-01 is specialized version of the ZL2004
DC-DC controller that has been optimized for high
output accuracy within a given set of operating
conditions. The ZL2004-01 is otherwise identical to
the ZL2004 in features and functionality. The
ZL2004-01 has been optimized for use with the
ZL1505 MOSFET driver and discrete MOSFETs.
The ZL2004-01 integrates a proprietary Digital-DC
communication bus for current sharing and inter device
communication. Adaptive algorithms improve light
load efficiency. All operating features can be
configured by simple pin-strap selection, resistor
selection or through the on-board serial port. The
PMBus™-compliant ZL2004-01 uses the SMBus™
serial interface for communication with other Digital-
DC products or a host controller.
Features
Power Conversion
• Efficient synchronous buck controller
• ± 0.2% V_OUT set-point accuracy
• 8.0 V to 10.0 V input range
• 0.9 V to 1.1 V output range
• Adaptive performance optimization algorithms
• Fast load transient response
• Active current sharing
• DCR current sensing with digitally adjustable
current sense range
• RoHS compliant (5 x 5 mm) QFN package
Power Management
• Digital soft start/stop
• Precision delay and ramp-up
• Power good/enable
• Voltage tracking, sequencing and margining
• Voltage/current/temperature monitoring
• SMBus communication (PMBus compliant)
• Output voltage and current protection
• Internal non-volatile memory (NVM)
Applications
• Servers / storage equipment
• Telecom / datacom equipment
• Power supplies (memory, DSP, ASIC, FPGA)
EN PG SS FC ILIM CFG FLEX V25 VR VDD
V (0,1)
VMON
MGN
SYNC
DDC
SCL
SDA
SALRT
POWER
MANAGEMENT
NON-
VOLATILE
MEMORY
I² C
PWM
CONTROLLER
MONITOR
ADC
LDO
LEVEL
SHIFTER
CURRENT
SENSE
TEMP
SENSOR
PWMH
PWML
ISENA
ISENB
SA (0,1)
VTRK VSEN+/-
XTEMP
SGND DGND
Figure 1. Block Diagram
1
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