主页 电源管理 交流/直流和直流/直流控制器（外部 FET）
主页
电源管理
交流/直流和直流/直流控制器（外部 FET）

TL1454A

正在供货

双通道脉宽调制 (PWM) 控制电路

立即订购
数据表

可提供此产品的更新版本

open-in-new 比较替代产品
功能与比较器件相似
LM5155 正在供货 2.2MHz 宽输入电压、1.5A MOSFET 驱动器、非同步升压控制器 Up to 2.2MHz fSW, higher efficiency and up to 45V input operating voltage

TL1454A

正在供货
数据表 立即订购

产品详情

Rating Catalog Topology Boost, Buck, Flyback, Forward, SEPIC Vin (max) (V) 20 Vin (min) (V) 3.6 Vout (max) (V) 20 Vout (min) (V) 1.26 Control mode Voltage mode Operating temperature range (°C) -20 to 85 Iq (typ) (µA) 3500 Duty cycle (max) (%) 100
Rating Catalog Topology Boost, Buck, Flyback, Forward, SEPIC Vin (max) (V) 20 Vin (min) (V) 3.6 Vout (max) (V) 20 Vout (min) (V) 1.26 Control mode Voltage mode Operating temperature range (°C) -20 to 85 Iq (typ) (µA) 3500 Duty cycle (max) (%) 100
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6 SOP (NS) 16 79.56 mm² 10.2 x 7.8 SSOP (DB) 16 48.36 mm² 6.2 x 7.8 TSSOP (PW) 16 32 mm² 5 x 6.4
  • Two Complete PWM Control Circuits
  • Outputs Drive MOSFETs Directly
  • Oscillator Frequency . . . 50 kHz to 2 MHz
  • 3.6-V to 20-V Supply-Voltage Range
  • Low Supply Current . . . 3.5 mA Typ
  • Adjustable Dead-Time Control, 0% to 100%
  • 1.26-V Reference
  • Two Complete PWM Control Circuits
  • Outputs Drive MOSFETs Directly
  • Oscillator Frequency . . . 50 kHz to 2 MHz
  • 3.6-V to 20-V Supply-Voltage Range
  • Low Supply Current . . . 3.5 mA Typ
  • Adjustable Dead-Time Control, 0% to 100%
  • 1.26-V Reference

The TL1454A is a dual-channel pulse-width-modulation (PWM) control circuit, primarily intended for low-power, dc/dc converters. Applications include LCD displays, backlight inverters, notebook computers, and other products requiring small, high-frequency, dc/dc converters.

Each PWM channel has its own error amplifier, PWM comparator, dead-time control comparator, and MOSFET driver. The voltage reference, oscillator, undervoltage lockout, and short-circuit protection are common to both channels.

Channel 1 is configured to drive n-channel MOSFETs in step-up or flyback converters, and channel 2 is configured to drive p-channel MOSFETs in step-down or inverting converters. The operating frequency is set with an external resistor and an external capacitor, and dead time is continuously adjustable from 0 to 100% duty cycle with a resistive divider network. Soft start can be implemented by adding a capacitor to the dead-time control (DTC) network. The error-amplifier common-mode input range includes ground, which allows the TL1454A to be used in ground-sensing battery chargers as well as voltage converters.

The TL1454A is a dual-channel pulse-width-modulation (PWM) control circuit, primarily intended for low-power, dc/dc converters. Applications include LCD displays, backlight inverters, notebook computers, and other products requiring small, high-frequency, dc/dc converters.

Each PWM channel has its own error amplifier, PWM comparator, dead-time control comparator, and MOSFET driver. The voltage reference, oscillator, undervoltage lockout, and short-circuit protection are common to both channels.

Channel 1 is configured to drive n-channel MOSFETs in step-up or flyback converters, and channel 2 is configured to drive p-channel MOSFETs in step-down or inverting converters. The operating frequency is set with an external resistor and an external capacitor, and dead time is continuously adjustable from 0 to 100% duty cycle with a resistive divider network. Soft start can be implemented by adding a capacitor to the dead-time control (DTC) network. The error-amplifier common-mode input range includes ground, which allows the TL1454A to be used in ground-sensing battery chargers as well as voltage converters.
filter 查找其他 交流/直流和直流/直流控制器（外部 FET）
下载

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 1
类型 标题 下载最新的英语版本 日期
* 数据表 Dual-Channel Pulse-Width-Modulation (PWM) Control Circuit 数据表 (Rev. A) 2002年 9月 25日

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训