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SC1214TSTRT

更新时间： 2024-02-18 06:10:36

品牌	Logo	应用领域
商升特 - SEMTECH		驱动器 MOSFET驱动器驱动程序和接口接口集成电路光电二极管
页数	文件大小	规格书
8页	170K
描述
High Speed, Combi-SenseTM Two-Phase, Synchronous MOSFET Driver

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SC1214TSTRT 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	TSSOP
包装说明：	ROHS COMPLIANT, MO-153AC, TSSOP-20	针数：	20
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
Is Samacsys：	N	高边驱动器：	YES
接口集成电路类型：	HALF BRIDGE BASED MOSFET DRIVER	JESD-30 代码：	R-PDSO-G20
JESD-609代码：	e3	长度：	6.5 mm
功能数量：	1	端子数量：	20
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装等效代码：	TSSOP20,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	12 V	认证状态：	Not Qualified
座面最大高度：	1.2 mm	子类别：	MOSFET Drivers
最大供电电压：	15 V	最小供电电压：	9 V
标称供电电压：	12 V	表面贴装：	YES
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4.4 mm
Base Number Matches：	1

SC1214TSTRT 数据手册

SC1214

High Speed, Combi-Sense^TM

Two-Phase, Synchronous MOSFET Driver

POWER MANAGEMENT

Description

Features

ꢀ High efficiency

ꢀ +12V gate drive voltage

ꢀ High peak drive current

ꢀ Adaptive non-overlapping gate drives provide

shoot-through protection

ꢀ Support Combi-Sense^TMand VID-on-fly operations

ꢀ Fast rise and fall times (15ns typical with 3000pf

load)

ꢀ Ultra-low (<30ns) propagation delay (BG going low)

ꢀ Floating top gate drive

ꢀ Crowbar function for over voltage protection

ꢀ High frequency (to 1.5 MHz) operation allows use

of small inductors and low cost ceramic capacitors

ꢀ Under-voltage-lockout

The SC1214 is a high speed, Combi-Sense^TM, two-phase

driver designed to drive high-side and low-side MOSFETs

in two synchronous Buck converters. The driver com-

bined with Combi-Sense PWM controllers, such as

Semtech SC2643VX or SC2643, provides a cost effec-

tive two-phase voltage regulator for advanced micro-

processors

The Combi-Sense^TMis a technique to sense the inductor

current for peak current mode control of voltage regula-

tor without using sensing resistor. It provides the follow-

ing advantages:

- No costly precision sensing resistor

- Lossless current sensing

- High level noise free signal

- Fast response

ꢀ Low quiescent current

- Suitable for wide range of duty cycle

The detailed explanation of the technique can be found

in the Applications Information section.

A 30ns max propagation delay from input transition to

the gate of the power FET’s guarantees operation at high

switching frequencies. Internal overlap protection circuit

prevents shoot-through from Vin to PGND in the main

and synchronous MOSFETs. The adaptive overlap pro-

tection circuit ensures the bottom FET does not turn on

until the top FET source has reached 1V, to prevent cross-

conduction.

Applications

ꢀ Intel Pentium® processor power supplies

ꢀ AMD Athlon^TMand AMD-K8^TMprocessor power

supplies

ꢀ High current low voltage DC-DC converters

High current drive capability allows fast switching, thus

reducing switching losses at high (up to 1.5MHz) frequen-

cies without causing thermal stress on the driver.

Under-voltage-lockout and over-temperature shutdown

features are included for proper and safe operation.

Timed latches and improved robustness are built into

the housekeeping functions such as the Under Voltage

Lockout and adaptive Shoot-through protection circuitry

to prevent false triggering and to assure safe operation.

The SC1214 is offered in a TSSOP-20 package.

www.semtech.com

May 9, 2005

12 3 4 5 6 7 8

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