TL1451A-EP - 增强型产品双路脉宽调制控制电路

TL1451A-EP是TI德州仪器公司的一款控制器（外部开关）产品，TL1451A-EP是增强型产品双路脉宽调制控制电路，本站介绍了TL1451A-EP的封装应用图解、特点和优点、功能等，并给出了与TL1451A-EP相关的TI元器件型号供参考。

TL1451A-EP - 增强型产品双路脉宽调制控制电路 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品描述

产品特性

Controlled Baseline
- One Assembly/Test Site, One Fabrication Site
Enhanced Diminishing Manufacturing Sources (DMS) Support
Enhanced Product-Change Notification
Qualification Pedigree(1)
Complete Pulse-Width Modulation (PWM) Power-Control Circuitry
Completely Synchronized Operation
Internal Undervoltage Lockout Protection
Wide Supply-Voltage Range
Internal Short-Circuit Protection
Oscillator Frequency . . . 500 kHz Max
Variable Dead Time Provides Control Over Total Range
Internal Regulator Provides a Stable 2.5-V Reference Supply

(1)Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.

DESCRIPTION/ORDERING INFORMATION

The TL1451A-EP incorporates on a single monolithic chip all the functions required in the construction of two pulse-width modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A-EP contains an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and dual common-emitter output transistor circuits.

The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control (DTC) comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip oscillator can be operated by terminating RT and CT. During low VCC conditions, the undervoltage lockout control circuit feature locks the outputs off until the internal circuitry is operational.

The TL1451A-EP is characterized for operation from -55°C to 125°C.

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