Datasheet > UCD8220-Q1

UCD8220-Q1

更新时间： 2024-10-14 12:16:55

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
29页	1075K
描述
DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

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UCD8220-Q1 数据手册

UCD8220-Q1

www.ti.com

SLUSB36A –JUNE 2012–REVISED JUNE 2012

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

Check for Samples: UCD8220-Q1

FEATURES

•

Digital Output Current Limit Flag

4.5-V to 15.5-V Supply Voltage Range

•

AEC-Q100 Qualified With the Following

Results:

APPLICATIONS

–

Device Temperature Grade 1: –40°C to

125°C Ambient Operating Temperature

Range

•

Digitally Managed Switch Mode Power

Supplies

–

Device HBM ESD Classification Level H2

Device CDM ESD Classification Level C3B

Push-Pull, Half-Bridge, or Full-Bridge

Converters

Battery Chargers

•

For Digitally Managed Power Supplies Using

μCs or the TMS320 ™ DSP Family

DESCRIPTION

The UCD8220-Q1 analog pulse-width modulator

device is used in digitally managed power supplies

using a microcontroller or the TMS320 DSP family.

Voltage or Peak Current Mode Control with

Cycle-by-Cycle Current Limiting

Clock Input from Digital Controller to Set

Operating Frequency and Max Duty Cycle

UCD8220-Q1 is a double-ended PWM controller

configured with push-pull drive logic.

•

Analog PWM Comparator

2-MHz Switching Frequency

Systems using the UCD8220-Q1 device close the

PWM feedback loop with traditional analog methods,

but the UCD8220-Q1 controller includes circuitry to

interpret a time-domain digital pulse train. The pulse

train contains the operating frequency and maximum

duty cycle limit which are used to control the power

supply operation. This eases implementation of a

converter with high level control features without the

added complexity or possible PWM resolution

limitations of closing the control loop in the discrete

time domain.

110-V Input Startup Circuit and Thermal

Shutdown (UCD8620)

•

Internal Programmable Slope Compensation

3.3-V, 10-mA Linear Regulator

DSP/μC Compatible Inputs

Dual ±4-A TrueDrive™ Integrated Circuit High

Current Drivers

•

10-ns Typical Rise and Fall Times with 2.2-nF

25-ns Input-to-Output Propagation Delay

25-ns Current Sense-to-Output Propagation

Delay

•

Programmable Current Limit Threshold

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

TMS320, TrueDrive, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...29

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UCD8220-Q1 替代型号

型号	品牌	替代类型	描述	数据表
UCD8220	TI	功能相似	DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

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