Datasheet > RT7220DLP

RT7220DLP

更新时间： 2024-11-13 17:00:39

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
1页	143K
描述
Synchronous Rectifier Controller with Zero Voltage Switching for Wide Output Voltage Operating Range

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

RT7220DLP 数据手册

RT7220D

Synchronous Rectifier Controller with Zero Voltage

Switching for Wide Output Voltage Operating Range

General Description

Features

⚫ Suitable for Flyback Converter in CCM, DCM and

The RT7220D is a Synchronous Rectifier (SR)

controller for Flyback converters operating in

Continuous Conduction Mode (CCM), Discontinuous

Conduction Mode (DCM) and Quasi-Resonant (QR)

mode. The RT7220D will sense the drain voltage of

MOSFET to determine SR gate on/off so as to minimize

turn-off dead-time and enhance efficiency.

Quasi-Resonant (QR) Mode

⚫ Suitable for 3V to 21V V

Range

OUT

⚫ ZVS Function to Optimize Efficiency

(Work with the Primary-Side Controller RT7757)

⚫ <1.65mA Operating Current in ZVS Mode

⚫ <250A Operating Current in Green Mode

The RT7220D supports the wide output voltage range

from 3V to 21V, and a HV LDO is especially built-in for

the MOSFET gate driver at low output voltage. When it

works with the primary-side controller RT7757, the

Zero-Voltage-Switching (ZVS) control can be enabled to

optimize the efficiency at high line.

⚫ Built-in HV LDO to Supply SR Driver when V

Lower than 5V

OUT

⚫ Automatic Dead-Time Tracking Control to

Optimize Efficiency

⚫ Protection

 SR Gate Driver with 6V Clamp

 SR Gate Initial Pull-Low before Start-Up

 SR Minimum Off-Time

Furthermore, the RT7220D provides a green mode

operation in light load condition, which reduces

operation current to be under 250A.

 Fast Turn-Off (<50ns) Gate Driver

Ordering Information

Applications

⚫ USB PD Power Converters

RT7220D

Package Type

QW: WQFN-16L 3x3

⚫ Fast-Charger Power Adapeters

⚫ General Purpose High-Efficiency and/or Compact-

Lead Plating System

G: Green

Size Flyback Power Converters

(Halogen Free and Pb Free)

RT7220D Version

(Refer to Version Table)

Note:

The products are:

 RoHS compliant and compatible with the current

requirements of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

is a registered trademark of Richtek Technology Corporation.

DS7220D-01T02 May 2023

www.richtek.com

中文翻译

下载PDF

与RT7220DLP相关器件

型号	品牌	获取价格	描述	数据表
RT7231	RICHTEK	获取价格	4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7231GCP	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 14TSSOP
RT7231GQW	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 10WDFN
RT7232	RICHTEK	获取价格	4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7232GCP	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 14TSSOP
RT7233	RICHTEK	获取价格	4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7234	RICHTEK	获取价格	4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7234GSP	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 8SOP
RT7235	RICHTEK	获取价格	5A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7235GCP	RICHTEK	获取价格	IC REG BUCK ADJ 5A SYNC 14TSSOP