Datasheet > ISL6559CBZ

ISL6559CBZ

更新时间： 2024-11-30 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		多相元件控制器
页数	文件大小	规格书
21页	602K
描述
Multi-Phase PWM Controller

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ISL6559CBZ 数据手册

ISL6559

Data Sheet

December 29, 2004

FN9084.8

Multi-Phase PWM Controller

Features

• Multi-Phase Power Conversion

- 2, 3 or 4 Phase Operation

• Active Channel Current Balancing

The ISL6559 provides core-voltage regulation by driving 2 to

4 interleaved synchronous-rectified buck-converter channels

in parallel. Interleaving the channel timing results in

increased ripple frequency which reduces input and output

ripple currents. The reduction in ripple results in lower

component cost, reduced dissipation, and a smaller

implementation area.

• Precision r

Current Sharing

DS(ON)

- Lossless

- Low Cost

• Input Voltage: 12V or 5V Bias

• Precision CORE Voltage Regulation

The ISL6559 uses cost and space-saving r

sensing

DS(ON)

- ±1% System Accuracy Over Temperature

- Differential Remote Output Voltage Sensing

- Programmable Reference Offset

• Microprocessor Voltage Identification Input

- 5-Bit VID Input

for channel current balance, active voltage positioning, and

over-current protection. Output voltage is monitored by an

internal differential remote sense amplifier. A high-bandwidth

error amplifier drives the output voltage to match the

programmed 5-bit DAC reference voltage. The resulting

compensation signal guides the creation of pulse width

modulated (PWM) signals to control companion Intersil

MOSFET drivers. The OFS pin allows direct offset of the

DAC voltage from 0V to 50mV using a single external

resistor. The entire system is trimmed to ensure a system

accuracy of ±1% over temperature.

- 0.800V to 1.550V in 25mV Steps

- Dynamic VID Technology

• Programmable Droop Voltage

• Fast Transient Recovery Time

• Over Current Protection

• Digital Soft Start

• Threshold Sensitive Enable Input

• High Ripple Frequency (160kHz to 4MHz)

Outstanding features of this controller IC include

Dynamic VID^TMtechnology allowing seamless on-the-fly VID

changing without the need of any external components.

Output voltage “droop” or active voltage positioning is

optional. When employed, it allows the reduction in size and

cost of the output capacitors required to support load

transients. A threshold-sensitive enable input allows the use

of an external resistor divider for start-up coordination with

Intersil MOSFET drivers or any other devices powered from

a separate supply.

• 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 Available (RoHS Compliant)

Applications

• AMD Hammer Family Processor Voltage Regulator

• Low Output Voltage, High Current DC-DC Converters

• Voltage Regulator Modules

Superior over-voltage protection is achieved by gating on the

lower MOSFET of all phases to crowbar the output voltage.

An optional second crowbar on V , formed with an external

MOSFET or SCR gated by the OVP pin, is triggered when

an over-voltage condition is detected. Under-voltage

conditions are detected, but PWM operation is not disrupted.

Over-current conditions cause a hiccup-mode response as

the controller repeatedly tries to restart. After a set number

of failed startup attempts, the controller latches off. A power

good logic signal indicates when the converter output is

between the UV and OV thresholds.

Pinouts

ISL6559CB (28 LEAD SOIC)

ISL6559CR (32 LEAD QFN)

TOP VIEW

GND

OVP

28 EN

27 FS/DIS

26 PGOOD

25 PWM4

24 ISEN4

23 ISEN1

22 PWM1

21 PWM2

20 GND

VID4

VID3

VID2

VID1

VID0

OFS

32 31 30 29 28 27 26 25

VID2

VID1

VID0

24 PWM4

23 ISEN4

22 ISEN1

21 PWM1

20 PWM2

19 GND

OFS

COMP

FB 10

IOUT 11

VDIFF 12

VSEN 13

RGND 14

19 ISEN2

18 ISEN3

17 PWM3

16 VCC

18 ISEN2

17 ISEN3

10 11 12 13 14 15 16

NC = NO CONNECT

15 GND

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

Dynamic VID is a trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...21

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ISL6559CBZ 替代型号

型号	品牌	替代类型	描述	数据表
ISL6559CB	INTERSIL	完全替代	Multi-Phase PWM Controller
ISL6559CBZ-T	INTERSIL	完全替代	Multi-Phase PWM Controller
ISL6559CB-T	INTERSIL	完全替代	Multi-Phase PWM Controller

与ISL6559CBZ相关器件

型号	品牌	获取价格	描述	数据表
ISL6559CBZ-T	INTERSIL	获取价格	Multi-Phase PWM Controller
ISL6559CBZ-T	RENESAS	获取价格	Multiphase PWM Controller; SOIC28; Temp Range: 0° to 70°
ISL6559CR	INTERSIL	获取价格	Multi-Phase PWM Controller
ISL6559CR-T	INTERSIL	获取价格	Multi-Phase PWM Controller
ISL6559CR-T	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, PLASTIC, MO-220-VHHD,
ISL6559CRZ	INTERSIL	获取价格	Multi-Phase PWM Controller
ISL6559CRZ	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, LEAD FREE, PLASTIC, MO
ISL6559CRZ-T	INTERSIL	获取价格	Multi-Phase PWM Controller
ISL6559CRZ-T	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, LEAD FREE, PLASTIC, MO
ISL6560	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller

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