ZHCSJG2A
March 2019 – September 2019
TPS7A78
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
半桥配置典型原理图
全桥配置典型原理图
4
修订历史记录
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Active Bridge Control
7.3.2
Full-Bridge (FB) and Half-Bridge (HB) Configurations
7.3.3
4:1 Switched-Capacitor Voltage Reduction
7.3.4
Undervoltage Lockout Circuits (VUVLO_SCIN) and (VUVLO_LDO_IN)
7.3.5
Dropout Voltage Regulation
7.3.6
Current Limit
7.3.7
Programmable Power-Fail Detection
7.3.8
Power-Good (PG) Detection
7.3.9
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Normal Operation
7.4.2
Dropout Mode
7.4.3
Disabled Mode
8
Application and Implementation
8.1
Application Information
8.1.1
Recommended Capacitor Types
8.1.2
Input and Output Capacitors Requirements
8.1.3
Startup Behavior
8.1.4
Load Transient
8.1.5
Standby Power and Output Efficiency
8.1.6
Reverse Current
8.1.7
Switched-Capacitor Stage Output Impedance
8.1.8
Power Dissipation (PD)
8.1.9
Estimating Junction Temperature
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Calculating the Cap-Drop Capacitor CS
8.2.2.1.1
CS Calculations for the Typical Design
8.2.2.2
Calculating the Surge Resistor RS
8.2.2.2.1
RS Calculations for the Typical Design
8.2.2.3
Checking for the Device Maximum ISHUNT Current
8.2.2.3.1
ISHUNT Calculations for the Typical Design
8.2.2.4
Calculating the Bulk Capacitor CSCIN
8.2.2.4.1
CSCIN Calculations for the Typical Design
8.2.2.5
Calculating the PFD Pin Resistor Dividers for a Power-Fail Detection
8.2.2.5.1
PFD Pin Resistor Divider Calculations for the Typical Design
8.2.2.6
Summary of the Typical Application Design Components
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
器件和文档支持
11.1
器件支持
11.1.1
开发支持
11.1.1.1
评估模块
11.1.1.2
SIMPLIS 模型
11.1.2
器件命名规则
11.2
文档支持
11.2.1
相关文档
11.3
接收文档更新通知
11.4
社区资源
11.5
商标
11.6
静电放电警告
11.7
Glossary
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
PWP|14
MPDS370A
散热焊盘机械数据 (封装 | 引脚)
PWP|14
PPTD393
订购信息
zhcsjg2a_oa
zhcsjg2a_pm
11.1.2
器件命名规则
Table 5.
器件命名规则
(1)
(2)
米6体育平台手机版_好二三四
V
LDO_OUT
TPS7A78
xx(x)yyyz
xx(x)
是标称输出电压。对于分辨率为 50mV 的输出电压,订购编号中使用两位数字;否则,使用三位数字(例如,33 = 3.3V;135 = 1.35V)。
yyy
为封装标识符。
z
为封装数量。R 表示大数量卷带,T 表示小数量卷带。
(1)
要获得最新的封装和订货信息,请参阅本文档末尾的封装选项附录,或者访问器件米6体育平台手机版_好二三四文件夹(
www.yogichopra.com
)。
(2)
可提供 1.3V 至 5.0V 范围内的输出电压(以 50mV 为单位增量)。有关器件的详细信息和供货情况,请联系制造商。
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