参数资料
型号: ZL2004ALNNT1
厂商: Intersil
文件页数: 10/42页
文件大小: 0K
描述: IC REG CTRLR BUCK SYNC ADJ 32QFN
标准包装: 1,000
PWM 型: 电压模式
输出数: 1
频率 - 最大: *
占空比: 95%
电源电压: 4.5 V ~ 14 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 带卷 (TR)
ZL2004
4.2 Power Conversion Overview
>
Input Voltage Bus
PG
EN
MGN ILIM SS
VMON V(0,1)
FC
VDD
LDO
VR
VTRK
Power Management
NVM
SYNC
GEN
Digital
Compensator
D-PWM
MOSFET
Pre
Drivers
PWMH
PWML
Driver
MOSFET
V OUT
NLR
SYNC
PLL
ADC
-
VSEN
ADC
+
ISENA
ISENB
REFCN
DAC
I 2 C
DDC
SALRT
SDA
SCL
Communication
ADC
MUX
VDD
Voltage
Sensor
TEMP
VSEN+
VSEN-
XTEMP
SA(0,1)
Sensor
Figure 4. ZL2004 Block Diagram
The ZL2004 operates as a voltage-mode, synchronous
buck converter with a selectable constant frequency
pulse width modulator (PWM) control scheme that
uses external driver, MOSFETs, capacitors, and an
inductor to perform power conversion.
V IN
Dual output PWM ZL2004
The ZL2004 provides a dual PWM signal which
removes the need of a tri-state function and
significantly improves conversion performance.
The ZL2004 has been designed to drive the QH and
QL independently, allowing greater control of the
MOSFETs and higher overall performance. A special
ZL2004
DRIVER
V OUT
driver with two PWM inputs is required (ZL1505).
Using two PWM signals (PWMH and PWML) offers
more options during fault event and pre-bias
conditions, eliminating the need for a tri-state driver
and reducing the delays associated with this scheme.
Figure 5. Synchronous Buck Converter
Figure 5 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.
10
The ZL2004 has several features to improve the power
conversion efficiency. A non-linear response (NLR)
loop improves the response time and reduces the
output deviation as a result of a load transient. The
ZL2004 monitors the power converter’s operating
conditions and continuously adjusts the turn-on and
turn-off timing of the high-side and low-side
MOSFETs to optimize the overall efficiency of the
power supply. Adaptive performance optimization
algorithms such as dead-time control, diode emulation,
FN6846.3
February 15, 2011
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相关代理商/技术参数
参数描述
ZL2004ALNNT1-01 功能描述:IC REG CTRLR BUCK SYNC ADJ 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP(0.300",7.62mm) 包装:管件 产品目录页面:1316 (CN2011-ZH PDF)
ZL2004EVK1 功能描述:KIT EVAL FOR ZL2004 RoHS:否 类别:编程器,开发系统 >> 评估板 - DC/DC 与 AC/DC(离线)SMPS 系列:* 标准包装:1 系列:- 主要目的:DC/DC,步降 输出及类型:1,非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND
ZL2005 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Digital-DC? Integrated Power Management and Conversion IC
ZL2005ALNF 制造商:Intersil Corporation 功能描述:DIGITAL DC-DC CONTROLLER W/ DRIVERS - TRAY100 - Trays 制造商:Intersil Corporation 功能描述:IC REG CNTRLR BUCK PWM 36-QFN 制造商:Intersil Corporation 功能描述:Digital DC-DC Controller w/ Drivers - BULK 50
ZL2005ALNFT 功能描述:电压模式 PWM 控制器 DIGTL DC-DC CNTRLR W/DRVRS TR100 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel