SLUSAO7C
September 2011 – July 2024
UCC28063
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and 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 Diagram
7.3
Feature Description
7.3.1
Principles of Operation
7.3.2
Natural Interleaving
7.3.3
On-Time Control, Maximum Frequency Limiting, and Restart Timer
7.3.4
Distortion Reduction
7.3.5
Zero-Current Detection and Valley Switching
7.3.6
Phase Management and Light-Load Operation
7.3.7
External Disable
7.3.8
Improved Error Amplifier
7.3.9
Soft Start
7.3.10
Brownout Protection
7.3.11
Dropout Detection
7.3.12
VREF
7.3.13
VCC
7.3.14
Control of Downstream Converter
7.3.15
System Level Protections
7.3.15.1
Failsafe OVP - Output Overvoltage Protection
7.3.15.2
Overcurrent Protection
7.3.15.3
Open-Loop Protection
7.3.15.4
VCC Undervoltage Lock-Out (UVLO) Protection
7.3.15.5
Phase-Fail Protection
7.3.15.6
CS-Open, TSET-Open and -Short Protection
7.3.15.7
Thermal Shutdown Protection
7.3.15.8
AC-Line Brownout and Dropout Protections
7.3.15.9
Fault Logic Diagram
7.4
Device Functional Modes
8
Applications 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
Inductor Selection
8.2.2.2
ZCD Resistor Selection (RZA, RZB)
8.2.2.3
HVSEN
8.2.2.4
Output Capacitor Selection
8.2.2.5
Selecting (RS) For Peak Current Limiting
8.2.2.6
Power Semiconductor Selection (Q1, Q2, D1, D2)
8.2.2.7
Brownout Protection
8.2.2.8
Converter Timing
8.2.2.9
Programming VOUT
8.2.2.10
Voltage Loop Compensation
8.2.3
Application Curves
8.2.3.1
Input Ripple Current Cancellation with Natural Interleaving
8.2.3.2
Brownout Protection
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Related Parts
11.1.2
Device Nomenclature
11.1.2.1
Detailed Pin Description
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
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)
D|16
MPDS178G
サーマルパッド・メカニカル・データ
D|16
QFND167D
発注情報
slusao7c_oa
slusao7c_pm
1
Features
Input filter and output capacitor ripple-current cancellation
Reduced current ripple for higher system reliability and smaller bulk capacitor
Reduced EMI filter size
Phase management capability
Fail-safe OVP with dual paths prevents output overvoltage conditions by voltage-sensing failures
Sensorless current-shaping simplifies board layout and improves efficiency
Advanced audible noise performance
Non-linear error-amplifier gain
Soft recovery on overvoltage
Integrated brownout and dropout handling
Reduced bias currents
Improved efficiency and design flexibility over traditional single-phase continuous conduction mode (CCM)
Inrush-safe current limiting:
Prevents MOSFET conduction during inrush
Eliminates reverse recovery events in output rectifiers
Enables use of low-cost diodes without extensive snubber circuitry
Improved light-load efficiency
Fast, smooth transient response
Expanded system-level protections
1A Source/1.8A sink gate drivers
–40°C to 125°C Operating Temperature Range in a 16-Lead SOIC Package