TL1451A-EP 增强型产品双路脉宽调制控制电路

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.

	TL1451A-EP
Switching Frequency (Max) (kHz)	500
Regulated Outputs (#)	2
Duty Cycle (Max) (%)	100
Iq (Typ) (mA)	1.7
Vin (Min) (V)	3.6
Vin (Max) (V)	50
Iout (Max) (A)	3
Thermal Shutdown	No
Vout (Min) (V)	1
Vout (Max) (V)	50
Vout2 (Min) (V)	1
Vout2 (Max) (V)	50
Vdo (Typ) (mV)	200
Iout2 (A)	3
Topology	Buck, Boost, Flyback
Pin/Package	16SOIC
Operating Temperature Range (C)	-55 to 125
Rating	HiRel Enhanced Product

TL1451A-EP 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

TL1451A-EP 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
TL1451AMDREP	ACTIVE	-55 to 125	3.05 \| 100u	SOIC (D) \| 16	2500 \| LARGE T&R
V62/06611-01XE	ACTIVE	-55 to 125	3.05 \| 100u	SOIC (D) \| 16	2500 \| LARGE T&R

TL1451A-EP 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
TL1451AMDREP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TL1451AMDREP	TL1451AMDREP
V62/06611-01XE	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	V62/06611-01XE	V62/06611-01XE

TL1451A-EP 工具与软件

培训内容	型号	软件/工具类型
最常用开关模式电源的功率级设计器	POWERSTAGE-DESIGNER	分析软件