參數(shù)資料
型號： TL1454ACNS
廠商： Texas Instruments, Inc.
英文描述： DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT
中文描述： 雙通道脈寬調(diào)制（PWM）控制電路
文件頁數(shù)： 1/27頁
文件大小： 409K
代理商： TL1454ACNS
TL1454A, TL1454AY
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)
CONTROL CIRCUIT
SLVS423 A– MAY 2002 – REVISED SEPTEMBER 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
description
The TL1454A is a dual-channel pulse-width-mod-
ulation (PWM) control circuit, primarily intended
for low-power, dc/dc converters. Applications
include LCD displays, backlight inverters, note-
book 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.
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP FORM
(Y)
TA
SMALL OUTLINE
(D)
PLASTIC DIP
(N)
TSSOP
(PW)
SSOP
(DB)
SOP-EIAJ
(NS)
–20
°
C to 85
°
C
The D, DB and NS packages are available taped and reeled. Add the suffix R to the device name (e.g., TL1454ACDR). The PW package is
available only left-end taped and reeled (indicated by the R suffix on the device type; e.g., TL1454ACPWR).
TL1454ACD
TL1454ACN
TL1454ACPWR
TL1454ACDB
TL1454ACNS
TL1454AY
Copyright
2002, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CT
RT
DTC1
IN1+
IN1–
COMP1
GND
OUT1
D, N OR PW PACKAGE
(TOP VIEW)
REF
SCP
DTC2
IN2+
IN2–
COMP2
V
CC
OUT2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TL1454ACNSR 功能描述:DC/DC 開關(guān)控制器 Dual ch PWM Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TL1454ACNSRG4 功能描述:DC/DC 開關(guān)控制器 Dual ch PWM Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TL1454ACPW 功能描述:DC/DC 開關(guān)控制器 Dual-Ch PWM Control Circuit RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TL1454ACPWG4 功能描述:DC/DC 開關(guān)控制器 Dual-Ch PWM Control Circuit RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TL1454ACPWR 功能描述:DC/DC 開關(guān)控制器 Dual ch PWM Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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