JAJSHM6E
june 2019 – february 2021
UCC256402
,
UCC256403
,
UCC256404
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Revision History
Device Comparison Table
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
Switching Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Hybrid Hysteretic Control
7.3.2
Regulated 13-V Supply
7.3.3
Feedback Chain
7.3.3.1
Optocoupler Feedback Signal Input and Bias
7.3.3.2
FB Pin Voltage Clamp
7.3.3.3
"Pick Lower Value" Block and Soft Start Multiplexer
7.3.3.4
Pick Higher Block and Burst Mode Multiplexer
7.3.3.5
VCR Comparators
7.3.4
Resonant Capacitor Voltage Sensing
7.3.5
Resonant Current Sensing
7.3.6
Bulk Voltage Sensing
7.3.7
Output Voltage Sensing
7.3.8
High Voltage Gate Driver
7.3.8.1
Adaptive Dead Time Control
7.3.9
Protections
7.3.9.1
ZCS Region Prevention
7.3.9.2
Over Current Protection (OCP)
7.3.9.3
Bias Winding Over Voltage Protection (BWOVP)
7.3.9.4
Input Under Voltage Protection (VINUVP)
7.3.9.5
Input Over Voltage Protection (VINOVP)
7.3.9.6
Boot UVLO
7.3.9.7
RVCC UVLO
7.3.9.8
Over Temperature Protection (OTP)
7.4
Device Functional Modes
7.4.1
High Voltage Start-Up
7.4.2
X-Capacitor Discharge
7.4.3
Burst Mode Control
7.4.3.1
Soft-Start and Burst-Mode Threshold
7.4.3.2
BMTL/BMTH Ratio Programming
7.4.4
System State Machine
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
LLC Power Stage Requirements
8.2.2.2
LLC Gain Range
8.2.2.3
Select Ln and Qe
8.2.2.4
Determine Equivalent Load Resistance
8.2.2.5
Determine Component Parameters for LLC Resonant Circuit
8.2.2.6
LLC Primary-Side Currents
8.2.2.7
LLC Secondary-Side Currents
8.2.2.8
LLC Transformer
8.2.2.9
LLC Resonant Inductor
8.2.2.10
LLC Resonant Capacitor
8.2.2.11
LLC Primary-Side MOSFETs
8.2.2.12
LLC Rectifier Diodes
8.2.2.13
LLC Output Capacitors
8.2.2.14
HV Pin Series Resistors
8.2.2.15
BLK Pin Voltage Divider
8.2.2.16
ISNS Pin Differentiator
8.2.2.17
VCR Pin Capacitor Divider
8.2.2.18
BW Pin Voltage Divider
8.2.2.19
Soft Start and Burst Mode Programming
8.2.3
Application Curves
8
Power Supply Recommendations
8.1
VCC Pin Capacitor
8.2
Boot Capacitor
8.3
RVCC Pin Capacitor
9
Layout
9.1
Layout Guidelines
9.2
Layout Example
10
Device and Documentation Support
10.1
Documentation Support
10.1.1
Related Documentation
10.2
Related Links
10.3
Receiving Notification of Documentation Updates
10.4
Community Resources
10.5
Trademarks
Mechanical, Packaging, and Orderable Information
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)
DDB|14
MPDC008
サーマルパッド・メカニカル・データ
発注情報
jajshm6e_oa
Data Sheet
UCC25640x 超低可聴ノイズ、超低スタンバイ電力の
LLC 共振コントローラ