PeakSwitch is designed to address applications with high peak-to-continuous power ratio demands. The very high switching frequency during peak power loads and excellent load transient response reduce system cost as well as component count and size. PeakSwitch incorporates a 700 V power MOSFET, oscillator, high voltage switched current source for startup, current limit, and thermal shutdown onto a monolithic device. In addition, these devices incorporate auto-restart, line under-voltage sense and frequency jittering. An innovative design minimizes audio frequency components in the simple ON/OFF control scheme to practically eliminate audible noise with standard varnished transformer construction.
PKS607YN 亮点:
EcoSmart– Extremely Energy-Efficient
Standby output power ≥0.6 W for 1 W input (high line)
Sleep mode power ≥2.4 W at 3 W input (high line)
No-load consumption <200 mW at 265 VAC input
Surpasses California Energy Commission (CEC), ENERGY STAR, and EU requirements
PeakSwitch Features Reduce System Cost
Delivers peak power of up to three times maximum continuous output power
277 kHz operation during peak power significantly reduces transformer size
Programmable smart AC line sensing provides latching shutdown during short circuit, overload and open loop faults, and prevents glitches during power down or brownout
Adaptive current limit reduces output overload power
Frequency jittering reduces EMI filter cost
Tight I2f tolerances and negligible temperature variation of key parameters ease design and lower cost
Accurate hysteretic thermal shutdown with automatic recovery provides complete system level overload protection and eliminates need for manual reset
Better System Cost/Performance over RCC & Discrete
Simple ON/OFF control – no loop compensation needed
Very low component count – higher reliability and single side printed circuit board
High bandwidth provides fast turn on with no overshoot and excellent transient load response
Peak current limit operation rejects line frequency ripple
Built-in current limit and hysteretic thermal protection
PKS607YN 应用:
Inkjet printer
Data storage, audio amplifier, DC motor drives
图1.PKS607YN功能方框图
图2.采用PeakSwitch PKS606Y的 32 W(连续),81W(峰值)通用输入电源
54W(200W峰值)音频放大器电源参考设计RDR-203
Reference Design Report for a 54 W (200 W Peak) Audio Amplifier Power Supply Using PKS607YN This document is an engineering report describing a 54 W continuous, 200 W peak power supply design utilizing two PKS607YN power conversion ICs. This power supply is intended as a replacement for linear power supplies for audio amplifiers.
The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.