JAJS124Q
December 1999 – October 2019
UCC1895
,
UCC2895
,
UCC3895
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
アプリケーション概略図
4
改訂履歴
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
デバイスおよびドキュメントのサポート
11.1
ドキュメントのサポート
11.1.1
関連資料
11.1.2
関連リンク
11.2
ドキュメントの更新通知を受け取る方法
11.3
コミュニティ・リソース
11.4
商標
11.5
静電気放電に関する注意事項
11.6
Glossary
12
メカニカル、パッケージ、および注文情報
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
DW|20
MPDS173B
PW|20
MPDS362A
N|20
MPDI002C
サーマルパッド・メカニカル・データ
発注情報
jajs124q_oa
jajs124q_pm
11
デバイスおよびドキュメントのサポート