ZL6105_14 Datasheet, PDF (1/35 Pages) Intersil Corporation – Digital DC/DC Controller with Drivers and Auto Compensation

Digital DC/DC Controller with Drivers and Auto
Compensation
ZL6105
The ZL6105 is a digital power controller with integrated
MOSFET drivers. Auto compensation eliminates the need for
manual compensation design work. Adaptive performance
optimization algorithms improve power conversion efficiency.
Zilker Labs Digital-DC™ technology enables a blend of power
conversion performance and power management features.
The ZL6105 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 3.3V to a
multiphase current sharing supply operating from a 12V input.
The ZL6105 eliminates the need for complicated power supply
managers as well as numerous external discrete components.
The ZL6105 uses the I²C/SMBus™ with PMBus™ protocol for
communication with a host controller and the Digital-DC bus
for communication between Zilker Labs devices.
The ZL6105 is pin for pin compatible with the ZL2008. The
POLA V_OUT table and compensation table have been removed.
A new single resistor V_OUT table and the Auto Compensation
feature have been added.
Related Literature
• AN2032, “NLR Configuration for DDC Products”
• AN2033, “Zilker Labs PMBus Command Set - DDC Products”
• AN2034, “Configuring Current Sharing on the ZL2004 and
ZL2006”
• AN2035, “Compensation Using CompZL™”
Features
Power Conversion
• Efficient Synchronous Buck Controller
• Auto Compensating PID Filter
• Adaptive Light Load Efficiency Optimization
• 3V to 14V Input Range
• 0.54V to 5.5V Output Range (with margin)
• ±1% Output Voltage Accuracy
• Internal 3A MOSFET Drivers
• Fast Load Transient Response
• Current Sharing and Phase Interleaving
• Snapshot™ Parameter Capture
• Pb-Free (RoHs Compliant)
Power Management
• Digital Soft-start/stop
• Power-Good/Enable
• Voltage Tracking, Sequencing and Margining
• Voltage, Current and Temperature Monitoring
• I²C/SMBus Interface, PMBus Compatible
• Output Voltage and Current Protection
• Internal Non-volatile Memory (NVM)
Applications
• Servers/Storage Equipment
• Telecom/Datacom Equipment
• Power Supply Modules
EN PG PH_EN FC ILIM CFG UVLO V25 VR VDD
V
SS
VTRK
MGN
SYNC
DDC
SCL
SDA
SALRT
POWER
MANAGEMENT
NON-
VOLATILE
MEMORY
PWM
CONTROLLER
I² C
MONITOR
ADC
LDO
DRIVER
CURRENT
SENSE
TEMP
SENSOR
BST
GH
SW
GL
VSEN+
VSEN-
ISENA
ISENB
SA
XTEMP
PGND SGND DGND
FIGURE 1. BLOCK DIAGRAM
100
V_OUT = 3.3V
95
V_OUT = 1.5V
90
85
80
75
70
65
60
V_IN = 12V
55 _{fSW = 400kHz}
Circuit of Figure ³4
50
02 4 6 8
10 12 14 16 18 20
Load Current (A)
FIGURE 2. EFFICIENCY vs LOAD CURRENT
December 19, 2013
1
FN6906.5
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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