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参数资料
| 型号： | ZL2106EVAL1Z |
| 厂商： | Intersil |
| 文件页数： | 10/29页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL STEP-DOWN ZL2106 |
| 标准包装： | 1 |
| 系列： | Zilker Labs™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3.3V |
| 电流 - 输出： | 6A |
| 输入电压： | 12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 400kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ZL2106 |
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ZL2106
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 DS(ON) synchronous power MOSFETs to provide an extremely
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
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 2 C/SMBus interface using an available computer and the
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 DS(ON) synchronous MOSFETs to minimize the circuit footprint.
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.
V IN
power and perform power management tasks with no
programming required. Advanced configuration options and
real-time configuration changes are available via the I 2 C/SMBus
LDO
D B
C IN
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
PWM
QH
QL
C B
L 1
V OUT
C OUT
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.
ZL
FIGURE 10. SYNCHRONOUS BUCK CONVERTER
>
INPUT VOLTAGE BUS
>
PG
EN MGN CFG
SS
VSET
VTRK
POWER MANAGEMENT
NVM
I SENSE
LDO
BST
FC
DIGITAL
COMPENSATOR
D-PWM
HS FET
DRIVER
SW
V OUT
SYNC
GEN
LS FET
DRIVER
SYNC
RESET
PLL
REF
ADC
ADC
Σ
+
-
I SENSE
DDC
VDD
SALRT
SDA
SCL
SA
COMMUNICATION
ADC
MUX
TEMP
SENSOR
VSEN
FIGURE 11. ZL2106 BLOCK DIAGRAM
10
FN6852.6
February 20, 2013
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