- 您现在的位置：买卖IC网 > Datasheet目录333 > ISL6208CBZ-T (Intersil)IC MOSFET DRVR SYNC BUCK 8-SOIC Datasheet资料下载
参数资料
| 型号： | ISL6208CBZ-T |
| 厂商： | Intersil |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | IC MOSFET DRVR SYNC BUCK 8-SOIC |
| 标准包装： | 2,500 |
| 配置： | 高端和低端，同步 |
| 输入类型： | PWM |
| 延迟时间： | 20ns |
| 电流 - 峰： | 2A |
| 配置数： | 1 |
| 输出数： | 2 |
| 高端电压 - 最大（自引导启动）： | 33V |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -10°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
ISL6208, ISL6208B
Timing Diagram
2.5V
PWM
t PDHU
t PDLU
t TSSHD
t RU
t FU
t RU
t FU
t PTS
1V
UGATE
LGATE
t FL
1V
t RL
t TSSHD
t PTS
t PDLL
t PDHL
t FL
Functional Pin Description
UGATE
The UGATE pin is the upper gate drive output. Connect to the
gate of high-side power N-Channel MOSFET.
BOOT
BOOT is the floating bootstrap supply pin for the upper gate
drive. Connect the bootstrap capacitor between this pin and
the PHASE pin. The bootstrap capacitor provides the charge to
turn on the upper MOSFET. See “Internal Bootstrap Diode” on
page 8 for guidance in choosing the appropriate capacitor
value.
PWM
The PWM signal is the control input for the driver. The PWM signal
can enter three distinct states during operation. See “Three-State
PWM Input” on page 8 for further details. Connect this pin to the
PWM output of the controller.
GND
GND is the ground pin for the IC.
LGATE
LGATE is the lower gate drive output. Connect to gate of the
low-side power N-Channel MOSFET.
VCC
Connect the VCC pin to a +5V bias supply. Place a high quality
bypass capacitor from this pin to GND.
FCCM
The FCCM pin enables or disables Diode Emulation. When
FCCM is LOW, diode emulation is allowed. Otherwise,
continuous conduction mode is forced. See “Diode Emulation”
on page 8 for more detail.
6
PHASE
Connect the PHASE pin to the source of the upper MOSFET and
the drain of the lower MOSFET. This pin provides a return path
for the upper gate driver.
Description
Theory of Operation
Designed for speed, the ISL6208 dual MOSFET driver controls
both high-side and low-side N-Channel FETs from one
externally provided PWM signal.
A rising edge on PWM initiates the turn-off of the lower MOSFET
(see “Timing Diagram” above). After a short propagation delay
[t PDLL ], the lower gate begins to fall. Typical fall times [t FL ] are
provided in the “Electrical Specifications” section. Adaptive shoot-
through circuitry monitors the LGATE voltage. When LGATE has
fallen below 1V, UGATE is allowed to turn ON. This prevents both
the lower and upper MOSFETs from conducting simultaneously, or
shoot-through.
A falling transition on PWM indicates the turn-off of the upper
MOSFET and the turn-on of the lower MOSFET. A short
propagation delay [t PDLU ] is encountered before the upper gate
begins to fall [t FU ]. The upper MOSFET gate-to-source voltage is
monitored, and the lower gate is allowed to rise after the upper
MOSFET gate-to-source voltage drops below 1V. The lower gate
then rises [t RL ], turning on the lower MOSFET.
This driver is optimized for converters with large step-down
compared to the upper MOSFET because the lower MOSFET
conducts for a much longer time in a switching period. The
lower gate driver is therefore sized much larger to meet this
application requirement.
The 0.5 Ω ON-resistance and 4A sink current capability enable
the lower gate driver to absorb the current injected to the lower
gate through the drain-to-gate capacitor of the lower MOSFET
and prevent a shoot-through caused by the high dv/dt of the
phase node.
FN9115.6
January 31, 2012
相关PDF资料 |
PDF描述 |
|---|---|
| ISL6209CB-T | IC MOSFET DRVR SYNC BUCK 8-SOIC |
| ISL6210CRZ | IC MOSFET DRIVER DUAL SYNC 16QFN |
| ISL6244EVAL1 | EVALUATION BOARD ISL6244 |
| ISL6261AEVAL1Z | EVAL BOARD 1 FOR ISL6261A |
| ISL6261EVAL1Z | EVAL BOARD FOR ISL6261 1 QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6208CHRZ-T | 制造商:Intersil Corporation 功能描述:LEAD-FREE VERSION OF ISL6208CR - COST IMPROVEMENT - JAZZ FAB - Tape and Reel 制造商:Intersil Corporation 功能描述:IC MOSFET DRVR SYNC BUCK 8DFN |
| ISL6208CIRZ-T | 制造商:Intersil Corporation 功能描述:LEAD-FREE VERSION OF ISL6208CR - COST IMPROVEMENT - JAZZ FAB - Tape and Reel 制造商:Intersil Corporation 功能描述:IC MOSFET DRVR SYNC BUCK 8DFN |
| ISL6208CR | 功能描述:IC MOSFET DRVR SYNC BUCK 8-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:50 系列:- 配置:低端 输入类型:非反相 延迟时间:40ns 电流 - 峰:9A 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:- 电源电压:4.5 V ~ 35 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-6，D²Pak（5 引线+接片），TO-263BA 供应商设备封装:TO-263 包装:管件 |
| ISL6208CR-T | 功能描述:IC MOSFET DRVR SYNC BUCK 8-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:50 系列:- 配置:低端 输入类型:非反相 延迟时间:40ns 电流 - 峰:9A 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:- 电源电压:4.5 V ~ 35 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-6，D²Pak（5 引线+接片），TO-263BA 供应商设备封装:TO-263 包装:管件 |
| ISL6208CRZ | 功能描述:功率驱动器IC VER OF ISL6208CR IBM FAB RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。