FDMF6707B

更新时间： 2024-01-07 07:25:45

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		服务器主板节能技术
页数	文件大小	规格书
18页	1493K
描述
Extra-Small, High-Performance, High- Frequency DrMOS Module

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

FDMF6707B 数据手册

Skip Mode (SMOD#)

The SMOD function allows for higher converter

efficiency under light-load conditions. During SMOD, the

low-side FET gate signal is disabled (held LOW),

preventing discharging of the output capacitors as the

filter inductor current attempts reverse current flow –

also known as “Diode Emulation” Mode.

Table 2. SMOD# Logic

DISB#

PWM

SMOD#

3-State

When the SMOD# pin is pulled HIGH, the synchronous

buck converter works in Synchronous Mode. This mode

allows for gating on the low-side FET. When the

SMOD# pin is pulled LOW, the low-side FET is gated

off. If the SMOD# pin is connected to the PWM

controller, the controller can actively enable or disable

SMOD when the controller detects light-load condition

from output current sensing. This pin is active LOW.

See Figure 26 for timing delays.

Note:

4. The SMOD feature is intended to have low

propagation delay between the SMOD signal and

the low-side FET VGS response time to control

diode emulation on a cycle-by-cycle basis.

SMOD#

V_{IH_SMOD}

V_{IL_SMOD}

V_{IH_PWM}

V_{IL_PWM}

PWM

90%

VSWH

10%

DCM

V_OUT

CCM

2.2V

VSWH

90%

1.0V

10%

t_{PD_PLGHL}

t_{PD_PHGLL}

t_{PD_PHGHH}

t_{PD_SHGLH}

t_{PD_SLGLL}

t_{D_DEADOFF}

t_{D_DEADON}

Delay from SMOD# going

LOW to LS V_GSLOW

Delay from SMOD# going

HIGH to LS V HIGH

HS turn -on with SMOD# LOW

Figure 26. SMOD# Timing Diagram

FDMF6707B • Rev. 1.0.2

www.fairchildsemi.com

1...10 11 121314 15 16...18

中文翻译

下载PDF

与FDMF6707B相关器件

型号	品牌	获取价格	描述	数据表
FDMF6707C	FAIRCHILD	获取价格	Extra-Small, High-Performance, High- Frequency DrMOS Module
FDMF6707V	FAIRCHILD	获取价格	Extra-Small, High-Performance, High-Frequency DrMOS Module
FDMF6708N	FAIRCHILD	获取价格	New Products, Tips and Tools for Power and Mobile Applications
FDMF6730	FAIRCHILD	获取价格	Driver plus FET Multi-chip Module
FDMF6820A	FAIRCHILD	获取价格	New Products, Tips and Tools for Power and Mobile Applications
FDMF6820A	ONSEMI	获取价格	超小型、高性能、高频率 DrMOS 模块
FDMF6820B	FAIRCHILD	获取价格	New Products, Tips and Tools for Power and Mobile Applications
FDMF6820B	ONSEMI	获取价格	超小型、高性能、高频DrMOS模块
FDMF6820C	FAIRCHILD	获取价格	New Products, Tips and Tools for Power and Mobile Applications
FDMF6820C	ONSEMI	获取价格	超小型，高性能，高频率 DrMOS 模块