大聯(lián)大品佳集團(tuán)推出Richtek高整合度USB充電電源適配器解決方案
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致力于亞太地區(qū)市場的領(lǐng)先半導(dǎo)體元器件分銷商---大聯(lián)大控股宣布,其旗下品佳推出基于Richtek(立锜科技) RT7786和RT7207的高整合USB充電電源適配器解決方案。
大聯(lián)大品佳代理的Richtek(立锜科技)推出RT7786+RT7207為一高整合度PWM +USB-PD Controller,它具備許多特征能提升低功率反馳式(Low-power Flyback)變壓器的性能,特別針對(duì)于USB充電的應(yīng)用方面,已取得USB-PD 協(xié)會(huì)認(rèn)證。該方案能以最簡化的回路設(shè)計(jì)完成。使用RT7786+RT7207將能夠同時(shí)實(shí)現(xiàn)低成本、體積小、重量輕的產(chǎn)品設(shè)計(jì)。
為降低待機(jī)功耗,Richtek(立锜科技)采用專有的Green-Mode 設(shè)計(jì)模式,以線性降頻方式低于Light-Load 狀態(tài)。使用專有的Green-Mode設(shè)計(jì)產(chǎn)品將能輕易的符合電源相關(guān)法規(guī)要求。而RT7207為高整合度IC,同時(shí)內(nèi)建CC/CV、LDO、TL431、OVP、OTP、SR、Cable Comp、Charge Pump、PMOS drive、Quick Discharge、Single Fault、PWM Off @ OVP,且不需在額外增加線路。
圖示1-大聯(lián)大品佳代理的Richtek(立锜科技)RT7786+RT7207USB充電電源適配器解決方案框架圖
RT7786 Features
• Designed for adaptive power
• Wide Vdd Range ( 7V~38V)
• Adaptive Vo OVP , UVP for < 3V
• Feedback Loop Fault Protection
• Adaptive Loop Gain for Loop Stability
• Adoptive Current Limit to meet LPS
• High Efficiency:
• CCM/QR Hybrid Control
• Power Saving < 30mW @ 5V
• Other Protection:
• Vdd OVP, OCP, OLP, OTP, Adjustable Constant Output Power , Brown in/out protection, Secondary Rectifier Short Protection , Adaptive Vo OVP
RT7207 Features
• USB PD 2.0 Type-C Compliant , Other protocol is optional
• Highly Integration:
• ARM M0 MCU embedded
• Transceiver embedded for BMC.
• Programmable Type C current mode setting. (default, 1.5A, 3A)
• CV and CC Control
• Synchronous rectifier driver and controller (Operate in both DCM and CCM for wide output voltage range (RT7207T)
• BLD pin for quick discharge
• Shut regulator and Programmable cable compensation built in
• Charge pump built in for wide VDD operation range ( 3V to 20V ).
• USBP pin to directly drive external isolation P-MOSFETs .
• Green mode in standby for power saving
• Protection:
• OTP, Adaptive OVP, Programmable UVP, SCP