ZL2106ALCFTK Intersil, ZL2106ALCFTK Datasheet - Page 10

• Manufacturer Part Number: ZL2106ALCFTK
• Description: 6A Digital DC-DC Converter W/ DDC - TR1K
• Manufacturer: Intersil
• Series: -r
• Type: Step-Down (Buck), PWM - Voltage Moder

Specifications of ZL2106ALCFTK

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.54 V ~ 5.5 V
• Current - Output: 6A
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 4.5 V ~ 14 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-VFQFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

ZL2106 Overview
Digital-DC Architecture
The ZL2106 is an innovative mixed-signal power conversion and
power management IC based on Zilker Labs patented Digital-DC
technology that provides an integrated, high performance
step-down converter for point of load applications. The ZL2106
integrates all necessary PWM control circuitry as well as low
r
small solution for supplying load currents up to 6A.
Its unique PWM loop utilizes an ideal mix of analog and digital
blocks to enable precise control of the entire power conversion
process with no software required, resulting in a very flexible
device that is also very easy to use. An extensive set of power
management functions are fully integrated and can be
configured using simple pin connections. The user configuration
can be saved in an internal non-volatile memory (NVM).
Additionally, all functions can be configured and monitored via
the SMBus hardware interface using standard PMBus
commands, allowing ultimate flexibility.
Once enabled, the ZL2106 is immediately ready to regulate
power and perform power management tasks with no
programming required. Advanced configuration options and
real-time configuration changes are available via the I
interface if desired and continuous monitoring of multiple
operating parameters is possible with minimal interaction from a
host controller. Integrated sub-regulation circuitry enables single
supply operation from any external supply between 4.5V and 14V
with no secondary bias supplies needed. The ZL2106 can also be
configured to operate from a 3.3V or 5V standby supply when the
main power rail is not present, allowing the user to configure
and/or read diagnostic information from the device when the
main power has been interrupted or is disabled.
DS(ON)
synchronous power MOSFETs to provide an extremely
SALRT
SALRT
VTRK
VTRK
SYNC
SYNC
>
>
DDC
DDC
SDA
SDA
SCL
SCL
FC
FC
SA
SA
10
RESET
RESET
COMMUNICATION
COMMUNICATION
PG
PG
SYNC
SYNC
GEN
GEN
POWER MANAGEMENT
POWER MANAGEMENT
EN
EN
COMPENSATOR
COMPENSATOR
COMPENSATOR
COMPENSATOR
REF
REF
MGN
MGN
DIGITAL
DIGITAL
PLL
PLL
DIGITAL
DIGITAL
FIGURE 11. ZL2106 BLOCK DIAGRAM
INPUT VOLTAGE BUS
INPUT VOLTAGE BUS
CFG
CFG
2
C/SMBus
SS
SS
ZL2106
ADC
ADC
ADC
ADC
D-PWM
D-PWM
ADC
ADC
NVM
NVM
VSET
VSET
The ZL2106 can be configured by simply connecting its pins
according to the tables provided in the following sections.
Additionally, a comprehensive set of application notes are
available to help simplify the design process. An evaluation
board is also available to help the user become familiar with the
device. This board can be evaluated as a standalone platform
using pin configuration settings. A Windows™-based GUI is also
provided to enable full configuration and monitoring capability
via the I
included USB cable.
Power Conversion Overview
The ZL2106 operates as a voltage-mode, synchronous buck
converter with a selectable constant frequency pulse width
modulator (PWM) control scheme. The ZL2106 integrates dual low
r
Figure 10 illustrates the basic synchronous buck converter
topology showing the primary power train components. This
converter is also called a step-down converter, as the output
voltage must always be lower than the input voltage.
DS(ON)
MUX
MUX
synchronous MOSFETs to minimize the circuit footprint.
I
I
SENSE
SENSE
2
+
+
VDD
VDD
Σ
Σ
C/SMBus interface using an available computer and the
FIGURE 10. SYNCHRONOUS BUCK CONVERTER
HS FET
HS FET
DRIVER
DRIVER
DRIVER
DRIVER
LS FET
LS FET
SENSOR
SENSOR
-
-
TEMP
TEMP
LDO
LDO
I
I
SENSE
SENSE
ZL
PWM
LDO
D
B
V
QH
IN
QL
VSEN
VSEN
C
BST
BST
SW
SW
B
C
IN
L
1
>
>
C
OUT
V
OUT
V
V
OUT
OUT
FN6852.4