ZHCSKB9Q
December 1999 – October 2019
UCC1895
,
UCC2895
,
UCC3895
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
简化应用示意图
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagrams
7.3
Feature Description
7.3.1
ADS (Adaptive Delay Set)
7.3.2
CS (Current Sense)
7.3.3
CT (Oscillator Timing Capacitor)
7.3.4
DELAB and DELCD (Delay Programming Between Complementary Outputs)
7.3.5
EAOUT, EAP, and EAN (Error Amplifier)
7.3.6
OUTA, OUTB, OUTC, and OUTD (Output MOSFET Drivers)
7.3.7
PGND (Power Ground)
7.3.8
RAMP (Inverting Input of the PWM Comparator)
7.3.9
REF (Voltage Reference)
7.3.10
RT (Oscillator Timing Resistor)
7.3.11
GND (Analog Ground)
7.3.12
SS/DISB (Soft Start/Disable)
7.3.13
SYNC (Oscillator Synchronization)
7.3.14
VDD (Chip Supply)
7.4
Device Functional Modes
7.5
Programming
7.5.1
Programming DELAB, DELCD and the Adaptive Delay Set
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Power Loss Budget
8.2.2.2
Preliminary Transformer Calculations (T1)
8.2.2.3
QA, QB, QC, QD FET Selection
8.2.2.4
Selecting LS
8.2.2.5
Selecting Diodes DB and DC
8.2.2.6
Output Inductor Selection (LOUT)
8.2.2.7
Output Capacitance (COUT)
8.2.2.8
Select Rectifier Diodes
8.2.2.9
Input Capacitance (CIN)
8.2.2.10
Current Sense Network (CT, RCS, RR, DA)
8.2.2.10.1
Output Voltage Setpoint
8.2.2.10.2
Voltage Loop Compensation
8.2.2.10.3
Setting the Switching Frequency
8.2.2.10.4
Soft Start
8.2.2.10.5
Setting the Switching Delays
8.2.2.10.6
Setting the Slope Compensation
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
文档支持
11.1.1
相关文档
11.1.2
相关链接
11.2
接收文档更新通知
11.3
社区资源
11.4
商标
11.5
静电放电警告
11.6
Glossary
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
DW|20
MPDS173B
PW|20
MPDS362A
N|20
MPDI002C
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcskb9q_oa
zhcskb9q_pm
6
Specifications
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