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| 型号： | ISL8120IRZ-TEC |
| 厂商： | Intersil |
| 文件页数： | 1/33页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 32-QFN |
| 标准包装： | 6,000 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 1.5MHz |
| 占空比： | 90% |
| 电源电压： | 3 V ~ 22 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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ISL8120IR
Data Sheet
November 11, 2011
FN6763.2
Dual/n-Phase Buck PWM Controller with
Integrated Drivers
The ISL8120IRZEC integrates two voltage-mode
synchronous buck PWM controllers to control a dual
independent voltage regulator or a 2-phase single output
regulator. It has PLL circuits and can output a phase-shift-
programmable clock signal for the system to be expanded to
3-, 4-, 6-, 12- phases with desired interleaving phase shift. It
also integrates current sharing control for the power module
to operate in parallel, which offers high system flexibility.
It has voltage feed forward compensation to maintain a
constant loop gain for optimal transient response, especially
for applications with a wide input voltage range. Its
integrated high speed MOSFET drivers and multi-feature
functions provide complete control and protection for a
2/n-phase synchronous buck converter, dual independent
regulators, or DDR tracking applications (VDDQ and VTT
outputs).
The output voltage of a ISL8120IRZEC-based converter can be
precisely regulated to as low as the internal reference voltage
0.6V, with a system accuracy of ±0.9% over industrial
temperature and line load variations. Channel 2 can track an
external ramp signal for DDR/tracking applications.
The ISL8120IRZEC integrates an internal linear regulator,
which generates VCC from input rail for applications with
only one single supply rail. The internal oscillator is
adjustable from 150kHz to 1.5MHz, and is able to track an
external clock signal for frequency synchronization and
phase paralleling applications. The integrated Pre-Biased
Digital Soft-Start, Differential Remote Sensing Amplifier, and
Programmable Input Voltage POR features enhance the
value of ISL8120IRZEC.
The ISL8120IRZEC protects against overcurrent conditions
by inhibiting the PWM operation while monitoring the current
with r DS(ON) of the lower MOSFET, DCR of the output
inductor, or a precision resistor. It also has a PRE-POR
Overvoltage Protection option, which provides some
protection to the load device if the upper MOSFET(s) is
The ISL8120IRZEC’s Fault Hand Shake feature protects any
channel from overloading/stressing due to system faults or
phase failure. The undervoltage fault protection features are
also designed to prevent a negative transient on the output
voltage during falling down. This eliminates the Schottky
diode that is used in some systems for protecting the load
device from reversed output voltage damage.
Features
? Full Traceability Through Assembly and Test by
Date/Trace Code Assignment
? Enhanced Process Change Notification per MIL-PRF-38535
? Enhanced Obsolescence Management
? Wide VIN Range Operation: 3V to 22V
- VCC Operation from 3V to 5.60V
? Fast Transient Response
- 80MHz Bandwidth Error Amplifier
- Voltage-Mode PWM Leading-Edge Modulation Control
- Voltage Feed-Forward
? Dual Channel 5V High Speed 4A MOSFET Gate Drivers
- Internal Bootstrap Diodes
? Internal Linear Regulator Provides a 5.4V Bias from VIN
? External Soft-Start Ramp Reference Input for
DDR/Tracking Applications
? Excellent Output Voltage Regulation
- 0.6V ±0.6%/±0.9% Internal Reference Over Industrial
Temperature
- True Differential Remote Voltage Sensing
? Oscillator Programmable from 150kHz to 1.5MHz
? Frequency Synchronization
? Scale for 1-, 2-, 3-, 4-, 6-, up to 12- Phase with Single
Output
- Excellent Phase Current Balancing
- Programmable Phase Shift Between the 2 Phases
Controlled by the ISL8120IRZEC and Programmable
Phase Shift for Clockout Signal
- Interleaving Operation Results in Minimum Input RMS
Current and Minimum Output Ripple Current
? Fault Hand Shake Capability for High System Reliability
? Overcurrent Protection
- DCR, r DS(ON) , or Precision Resistor Current Sensing
- Independent and Average Phase Current OCP
? Output Overvoltage and Undervoltage Protections
? Programmable Phase Shift in Dual Mode Operation
? Digital Soft-Start with Pre-Charged Output Start-up Capability
? Power-Good Indication
? Dual Independent Channel Enable Inputs with Precision
Voltage Monitor and Voltage Feed-Forward Capability
- Programmable Input Voltage POR and its Hysteresis
with a Resistor Divider at EN Input
? Over-Temperature Protection
? Pre-Power-On-Reset Overvoltage Protection Option
? 32 Ld 5x5 QFN Package - Near Chip-Scale Footprint
- Enhanced Thermal Performance for MHz Applications
? Pb-Free (RoHS compliant)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008, 2009, 2011. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL8120IRZ-TK | 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL8121 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers |
| ISL8121EVAL1 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers |
| ISL8121EVAL1Z | 制造商:Intersil Corporation 功能描述:- Bulk |
| ISL8121IRZ | 功能描述:IC REG CTRLR BUCK PWM VM 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
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