參數(shù)資料
型號(hào)： ISL6551ABZ
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： 500-mA Peak Step-Up, Step-Down, Inverting Switching Voltage Regulator 14-PDIP -40 to 85
中文描述： DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28
封裝： ROHS COMPLIANT, PLASTIC, MS-013AE, SOIC-28
文件頁(yè)數(shù)： 1/26頁(yè)
文件大小： 619K
代理商： ISL6551ABZ
1
FN9066.4
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. 2003-2005. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
ISL6551
ZVS Full Bridge PWM Controller
The ISL6551 is a zero voltage switching (ZVS) full-bridge
PWM controller designed for isolated power systems. This
part implements a unique control algorithm for fixed-
frequency ZVS current mode control, yielding high efficiency
with low EMI. The two lower drivers are PWM-controlled on
the trailing edge and employ resonant delay while the two
upper drivers are driven at a fixed 50% duty cycle.
This IC integrates many features in both 6x6 mm
2
QFN and
28-lead SOIC packages to yield a complete and
sophisticated power supply solution. Control features include
programmable soft-start for controlled start-up,
programmable resonant delay for zero voltage switching,
programmable leading edge blanking to prevent false
triggering of the PWM comparator due to the leading edge
spike of the current ramp, adjustable ramp for slope
compensation, drive signals for implementing synchronous
rectification in high output current, ultra high efficiency
applications, and current share support for paralleling up to
10 units, which helps achieve higher reliability and
availability as well as better thermal management. Protective
features include adjustable cycle-by-cycle peak current
limiting for overcurrent protection, fast short-circuit protection
(in hiccup mode), a latching shutdown input to turn off the IC
completely on output overvoltage conditions or other
extreme and undesirable faults, a non-latching enable input
to accept an enable command when monitoring the input
voltage and thermal condition of a converter, and VDD under
voltage lockout with hysteresis. Additionally, the ISL6551
includes high current high-side and low-side totem-pole
drivers to avoid additional external drivers for moderate gate
capacitance (up to 1.6nF at 1MHz) applications, an
uncommitted high bandwidth (10MHz) error amplifier for
feedback loop compensation, a precision bandgap reference
with ±1.5% (ISL6551AB) or ±1% (ISL6551IB) tolerance over
recommended operating conditions, and a ±5% “in
regulation” monitor.
In addition to the ISL6551, other external elements such as
transformers, pulse transformers, capacitors, inductors and
Schottky or synchronous rectifiers are required for a
complete power supply solution. A detailed 200W telecom
power supply reference design using the ISL6551 with
companion Intersil ICs, Supervisor And Monitor ISL6550 and
Half-bridge Driver HIP2100, is presented in Application Note
AN1002.
In addition, the ISL6551 can also be designed in push-pull
converters using all of the features except the two upper
drivers and adjustable resonant delay features.
Features
High Speed PWM (up to 1MHz) for ZVS Full Bridge
Control
Current Mode Control Compatible
High Current High-Side and Low-Side Totem-Pole Drivers
Adjustable Resonant Delay for ZVS
10MHz Error Amplifier Bandwidth
Programmable Soft-Start
Precision Bandgap Reference
Latching Shutdown Input
Non-latching Enable Input
Adjustable Leading Edge Blanking
Adjustable Dead Time Control
Adjustable Ramp for Slope Compensation
Fast Short-Circuit Protection (Hiccup Mode)
Adjustable Cycle-by-Cycle Peak Current Limiting
Drive Signals to Implement Synchronous Rectification
VDD Under-voltage Lockout
Current Share Support
±5% “In Regulation” Indication
QFN Package:
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat
No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Full-Bridge and Push-Pull Converters
Power Supplies for Off-line and Telecom/Datacom
Power Supplies for High End Microprocessors and
Servers
Data Sheet
July 8, 2005
相關(guān)PDF資料
PDF描述
ISL6551ARZ Wide-Range Power-Supply Controller 8-PDIP -20 to 85
ISL6551EVAL1 Wide-Range Power-Supply Controller 8-PDIP -20 to 85
ISL6551IR Wide-Range Power-Supply Controller 8-SO -20 to 85
ISL6551IR-T ZVS Full Bridge PWM Controller
ISL6552CBZ Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL6551ABZ-T 功能描述:IC REG CTRLR FLYBACK PWM 28-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR)
ISL6551AR 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL6551AR-T 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL6551ARZ 功能描述:IC REG CTRLR FLYBACK PWM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR)
ISL6551ARZ-T 功能描述:IC REG CTRLR FLYBACK PWM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR)
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