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TPS54494PWP PDF预览

TPS54494PWP

更新时间： 2024-12-01 12:47:11
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
23页 923K
描述
4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET

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TPS54494PWP 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HTSSOP-16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：1.71Samacsys Description：Texas Instruments TPS54494PWP, Dual Step Down, Synchronous DC-DC Converter, 4A, Adjustable, 0.76 → 7 V, 16-Pin
其他特性：OUTPUT VOLTAGE RANGE IS 0.76 TO 7V; OUTPUT CURRENT LIMIT IS 5A模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：18 V最小输入电压：4.5 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e4长度：5 mm
湿度敏感等级：2功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：7 A
最大输出电压：7 V最小输出电压：0.76 V
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.2 mm
子类别：Switching Regulator or Controllers最大供电电流 (Isup)：2 mA
标称供电电压 (Vsup)：12 V表面贴装：YES
切换器配置：BUCK最大切换频率：700 kHz
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

TPS54494PWP 数据手册

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TPS54494  
www.ti.com  
SLVSBH1 –JUNE 2012  
4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET  
Check for Samples: TPS54494  
1
FEATURES  
APPLICATIONS  
2
•
D-CAP2™ Control Mode  
•
Point-of-Load Regulation in Low Power  
Systems for Wide Range of Applications  
–
–
Fast Transient Response  
–
–
–
–
–
Digital TV Power Supply  
Networking Home Terminal  
Digital Set Top Box (STB)  
DVD Player/Recorder  
No External Parts Required For Loop  
Compensation  
–
Compatible with Ceramic Output  
Capacitors  
•
•
•
Wide Input Voltage Range : 4.5 V to 18 V  
Output Voltage Range : 0.76V to 7V  
Gaming Consoles and Other  
DESCRIPTION  
Highly Efficient Integrated FETs Optimized for  
Low Duty Cycle Applications  
The TPS54494 is a dual, adaptive on-time D-CAP2™  
mode synchronous buck converter. The TPS54494  
enables system designers to complete the suite of  
various end equipment’s power bus regulators with a  
cost effective, low component count, and low standby  
current solution. The main control loops of the  
TPS54494 use the D-CAP2™ mode control which  
provides a very fast transient response with no  
external compensation components. The adaptive on-  
time control supports seamless transition between  
PWM mode at higher load conditions and Eco-  
mode™ operation at light loads. Eco-mode™ allows  
the TPS54494 to maintain high efficiency during  
lighter load conditions. The TPS54494 is able to  
adapt to both low equivalent series resistance (ESR)  
output capacitors such as POSCAP or SP-CAP, and  
ultra-low ESR, ceramic capacitors. The device  
provides convenient and efficient operation with input  
voltages from 4.5V to 18V.  
–
90 mΩ (High Side) and 60 mΩ (Low Side)  
•
•
•
•
•
•
•
•
•
•
•
High Initial Reference Accuracy  
4A CH1 / 2A CH2 Continuous Load Current  
Low-Side rDS(on) Loss-Less Current Sensing  
Fixed Soft Start : 1.0ms  
Non-Sinking Pre-Biased Soft Start  
Powergood  
700 kHz Switching Frequency  
Cycle-by-Cycle Over-Current Limit Control  
OCL/UVLO/TSD Protections  
Hiccup Timer for Overload Protection  
Adaptive Gate Drivers with Integrated Boost  
PMOS Switch  
•
OCP Constant Due To Thermally Compensated  
rDS(on) with 4000ppm/℃  
The TPS54494 is available in a 4.4mm×5.0mm 16 pin  
TSSOP (PWP) package, and is specified for an  
ambient temperature range from –40°C to 85°C.  
•
•
16-Pin HTSSOP  
Auto-Skip Eco-mode™ꢀfor High Efficiency at  
Light Load  
Input Voltage  
V
= 1.5 V (50 mV/div)  
O2  
1
VIN2  
VIN1  
16  
15  
C12  
C11  
2
3
VBST1  
VBST2  
VO1  
C32  
C31  
L12  
L11  
VO2  
SW2 14  
SW1  
C22  
C21  
4
5
PGND1  
EN1  
PGND213  
EN2 12  
TPS54494  
Iout (1 A/div)  
HTSSOP16  
PGND  
PGND  
PG1  
6
7
8
PG2 11  
(PowerPAD)  
R11  
R21  
R12  
R22  
VFB1  
GND  
10  
VFB2  
C4  
9
t - Time - 100 ms/div  
VREG5  
PGND  
SGND  
SGND  
1
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.  
2
D-CAP2, Eco-mode, Eco-Mode 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.  
Copyright © 2012, Texas Instruments Incorporated  
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中文翻译

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TPS54494PWP 替代型号

型号 品牌 替代类型 描述 数据表
TPS54495PWP TI

完全替代

 4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET
TPS54495RSAT TI

类似代替

 4.5V 至 18V 输入、双路 4A/2A 输出、同步降压转换器 | RSA | 16
TPS54395PWP TI

类似代替

 3A Dual Channel Synchronous Step-Down Switche

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TPS54494PWPR TI

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 		4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET
TPS54494RSAR TI

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 		具有集成 FET 的 4A 双通道同步降压转换开关 | RSA | 16 | -40 to
TPS54494RSAT TI

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 		具有集成 FET 的 4A 双通道同步降压转换开关 | RSA | 16 | -40 to
TPS54495 TI

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 		4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET
TPS54495PWP TI

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 		4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET
TPS54495PWPR TI

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 		4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET
TPS54495RSAR TI

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 		4.5V 至 18V 输入、双路 4A/2A 输出、同步降压转换器 | RSA | 16
TPS54495RSAT TI

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 		4.5V 至 18V 输入、双路 4A/2A 输出、同步降压转换器 | RSA | 16
TPS544B20 TI

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 		具有 PMBus 编程功能和监控的 4.5V 至 18V、20A 同步 SWIFT™ 降压
TPS544B20_15 TI

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 		TPS544x20 4.5-V to 18-V, 20-A, and 30-A SWIFT

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