JAJSC34B
March 2012 – December 2023
UCC28070A
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Pin Configuration and Functions
4.1
Pin Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Interleaving
6.3.2
Programming the PWM Frequency and Maximum Duty-Cycle Clamp
6.3.3
Frequency Dithering (Magnitude and Rate)
6.3.4
External Clock Synchronization
6.3.5
Multi-phase Operation
6.3.6
VSENSE and VINAC Resistor Configuration
6.3.7
VSENSE and VINAC Open-Circuit Protection
6.3.8
Current Synthesizer
6.3.9
Programmable Peak Current Limit
6.3.10
Linear Multiplier and Quantized Voltage Feed Forward
6.3.11
Enhanced Transient Response (VA Slew-Rate Correction)
6.3.12
Voltage Biasing (VCC and VVREF)
6.3.13
PFC Enable and Disable
6.3.14
Adaptive Soft Start
6.3.15
PFC Start-Up Hold Off
6.3.16
Output Overvoltage Protection (OVP)
6.3.17
Zero-Power Detection
6.3.18
Thermal Shutdown
6.3.19
Current Loop Compensation
6.3.20
Voltage Loop Compensation
6.4
Device Functional Modes
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Output Current Calculation
7.2.2.2
Bridge Rectifier
7.2.2.3
PFC Inductor (L1 and L2)
7.2.2.4
PFC MOSFETs (M1 and M2)
7.2.2.5
PFC Diode
7.2.2.6
PFC Output Capacitor
7.2.2.7
Current-Loop Feedback Configuration (Sizing of the Current-Transformer Turns-Ratio and Sense Resistor (RS))
7.2.2.8
Current-Sense Offset and PWM Ramp for Improved Noise Immunity
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Documentation Support
8.1.1
Related Documentation
8.2
Community Resources
8.3
Trademarks
9
Revision History
10
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)
PW|20
MPDS362A
サーマルパッド・メカニカル・データ
発注情報
jajsc34b_oa
jajsc34b_pm
5.2
ESD Ratings
VALUE
UNIT
V
(ESD)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
(1)
2000
V
Charged-device model (CDM), per JEDEC specification JESD22-C101
(2)
500
(1)
JEDEC document JEP155 states that 500V HBM allows safe manufacturing with a standard ESD control process.
(2)
JEDEC document JEP157 states that 250V CDM allows safe manufacturing with a standard ESD control process.