Datasheet > ISL6551IR-TEC

ISL6551IR-TEC

更新时间： 2024-09-25 07:02:55

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
23页	501K
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ZVS Full Bridge PWM Controller

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ISL6551IR-TEC 数据手册

ISL6551IREC

Data Sheet

September 2, 2008

FN6762.0

ZVS Full Bridge PWM Controller

Features

The ISL6551IREC 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.

• Full Traceability Through Assembly and Test by

Date/Trace Code Assignment

• Enhanced Process Change Notification per MIL-PRF-38535

• Enhanced Obsolescence Management

• High Speed PWM (up to 1MHz) for ZVS Full Bridge

Control

This IC integrates many features in a 28 lead 6mmx6mm

• 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

QFN package 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 undervoltage lockout with hysteresis.

Additionally, the ISL6551IREC 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% or ±1% tolerance

over recommended operating conditions, and a ±5% “in

regulation” monitor.

• 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 Undervoltage 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

In addition to the ISL6551IREC, 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

ISL6551IREC with companion Intersil ICs, Supervisor and

Monitor ISL6550 and Half-bridge Driver HIP2100, is

presented in Application Note AN1002.

Applications

• Full-Bridge and Push-Pull Converters

• Power Supplies for Off-line and Telecom/Datacom

• Power Supplies for High End Microprocessors and

Servers

In addition, the ISL6551IREC can also be designed in push-

pull converters using all of the features except the two upper

drivers and adjustable resonant delay features.

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.

All other trademarks mentioned are the property of their respective owners.

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与ISL6551IR-TEC相关器件

型号	品牌	获取价格	描述	数据表
ISL6551IRZ	INTERSIL	获取价格	ZVS Full Bridge PWM Controller
ISL6551IRZ-T	RENESAS	获取价格	DUAL SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC28, 6 X 6 MM, ROHS COMPLIANT, P
ISL6552	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552_04	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552CB	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552CB-T	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552CBZ	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552CBZ-T	RENESAS	获取价格	Microprocessor CORE Voltage Regulator Multiphase Buck PWM Controller; SOIC20; Temp Range:
ISL6552CR	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552CR-T	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller

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