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MIC2591B-2YTQ

更新时间： 2024-11-08 03:13:11

品牌	Logo	应用领域
麦瑞 - MICREL		控制器 PC
页数	文件大小	规格书
34页	1923K
描述
Dual-Slot PCI Express Hot-Plug Controller

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MIC2591B-2YTQ 数据手册

MIC2591B

Dual-Slot PCI Express Hot-Plug Controller

General Description

Features

The MIC2591B is a dual-slot power controller supporting the

power distribution requirements for Peripheral Component

Interconnect Express (PCI Express) Hot-Plug compliant

systems incorporating the Intelligent Platform Management

Interface (IPMI) Speciﬁcation v1.0. The MIC2591B provides

complete power control support for two PCI Express slots,

includingthe3.3VAUXdeﬁnedbythePCIExpressstandards.

Support for 12V, 3.3V, and 3.3VAUX supplies is provided

including programmable constant-current inrush limiting,

voltage supervision, programmable current limit, and circuit

breaker functions. These features provide comprehensive

system protection and fault isolation. The MIC2591B also

incorporates an SMBus interface via which complete status

of each slot is provided. Data such as voltage and current

fromeachsupplyofeachslotcanbeobtainedforIPMIsensor

records in addition to the power status of each slot.

• Supports two independent PCI Express slots

• SMBus interface for slot power control and status

• Voltage-tolerant I/O for compatibility with SMBus 2.0

systems

• 12V, 3.3V, and 3.3VAUX supplies supported per PCI

Express Speciﬁcation v1.0a

- Intergrated power MOSFETs for 3.3VAUX rails

- Standby operation for Wake-on-LAN applications with

low backfeed on Main +12V and +3.3V rails.

• On-chip circuitry for data collection of each rail output

voltage and output current for both slots

- Integral analog multiplexer and 8-bit ∆Σ ADC

- Compliant to the Intelligent Platform Management

Interface (IPMI) Speciﬁcation v1.0

- Conversion results available via an SMBus interface

• Programmable inrush current limiting

• Active current regulation controls inrush current

• Electronic circuit breaker for each supply to each slot

• High accuracies for both circuit breaker trip points and

nuisance trip prevention timers

All support documentation can be found on Micrel’s web site

at www.micrel.com.

• Dual level fault detection for quick fault response without

nuisance tripping

• Thermal isolation between circuitry for Slot A and Slot B

• Two General Purpose Input pins suitable for interface to

logic and switches.

Applications

• PCI Express v1.0a hot-plug power control

Ordering Information

Part Number

12V and 3V

3.3VAUX

Package

Standard

Pb-Free

Fast-Trip Thresholds

Current Limit

MIC2591B – 2BTQ MIC2591B – 2YTQ

MIC2591B – 3BTQ* MIC2591B – 3YTQ*

MIC2591B – 5BTQ* MIC2591B – 5YTQ*

* Contact factory for availability

100mV

150mV

0.375A

48 Pin TQFP

Disabled

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-033105

March 2005

12 3 4 5 6 7...34

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与MIC2591B-2YTQ相关器件

型号	品牌	获取价格	描述	数据表
MIC2591B-3BTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2591B-3YTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2591B-5BTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2591B-5YTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2592B	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2592B_05	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2592B-2BTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2592B-2YTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2592B-3BTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller
MIC2592B-3YTQ	MICREL	获取价格	Dual-Slot PCI Express Hot-Plug Controller

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