Digital DC/DC Controller with Drivers and Auto
Compensation
ZL6105
Features
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.
Power Conversion
• Efficient Synchronous Buck Controller
• Auto Compensating PID Filter
• Adaptive Light Load Efficiency Optimization
• 3V to 14V Input Range
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.
• 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)
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 VOUT table and compensation table have been removed.
A new single resistor VOUT table and the Auto Compensation
feature have been added.
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)
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”
Applications
• Servers/Storage Equipment
• Telecom/Datacom Equipment
• Power Supply Modules
• AN2035, “Compensation Using CompZL™”
100
EN PG PH_EN FC ILIM CFG UVLO V25 VR VDD
VOUT = 3.3V
VOUT = 1.5V
95
90
85
80
75
70
65
60
55
V
SS
VTRK
MGN
LDO
POWER
MANAGEMENT
BST
GH
SYNC
DDC
DRIVER
SW
GL
NON-
VOLATILE
MEMORY
VSEN+
VSEN-
ISENA
PWM
CONTROLLER
CURRENT
SENSE
ISENB
SCL
SDA
SALRT
VIN = 12V
fSW = 400kHz
Circuit of Figure 4
TEMP
SENSOR
MONITOR
ADC
I2C
3
50
0
4
10
14 16 18 20
2
6
8
12
SA
XTEMP
PGND SGND DGND
Load Current (A)
FIGURE 2. EFFICIENCY vs LOAD CURRENT
FIGURE 1. BLOCK DIAGRAM
December 19, 2013
FN6906.5
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011-2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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