参数资料
型号: ISL6610IRZ
厂商: Intersil
文件页数: 9/11页
文件大小: 0K
描述: IC MOSFET DRVR DUAL SYNC 16-QFN
标准包装: 75
配置: 高端和低端,同步
输入类型: PWM
延迟时间: 18ns
配置数: 2
输出数: 4
高端电压 - 最大(自引导启动): 36V
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-VQFN 裸露焊盘
供应商设备封装: 16-QFN-EP(4x4)
包装: 管件
ISL6610, ISL6610A
Therefore, if such a situation (when input bus powered up
before the bias of the controller and driver is ready) could
conceivably be encountered, it is a common practice to
– V
?
---------------------------------- ?
? dV ?
V GS_MILLER = ------- ? R ? C rss ? 1 – e dt
iss ?
------- ? R ? C
place a resistor (R UGPH ) across the gate and source of the
upper MOSFET to suppress the Miller coupling effect. The
value of the resistor depends mainly on the input voltage’s
rate of rise, the C GD /C GS ratio, as well as the gate-source
threshold of the upper MOSFET. A higher dV/dt, a lower
dV
DS
dt ? ?
? ?
? ?
(EQ. 5)
C DS /C GS ratio, and a lower gate-source threshold upper
FET will require a smaller resistor to diminish the effect of
R = R UGPH + R GI
C rss = C GD
C iss = C GD + C GS
the internal capacitive coupling. For most applications, the
integrated 20k Ω typically sufficient, not affecting normal
performance and efficiency.
The coupling effect can be roughly estimated with the
following equations, which assume a fixed linear input ramp
and neglect the clamping effect of the body diode of the
VCC
BOOT
C BOOT
C GD
VIN
D
upper drive and the bootstrap capacitor. Other parasitic
components such as lead inductances and PCB
capacitances are also not taken into account. These
DU
DL
UGATE
G
R GI
C DS
equations are provided for guidance purpose only.
Therefore, the actual coupling effect should be examined
using a very high impedance (10M Ω or greater) probe to
PHASE
C GS
S
Q UPPER
ensure a safe design margin.
FIGURE 6. GATE TO SOURCE RESISTOR TO REDUCE
UPPER MOSFET MILLER COUPLING
9
FN6395.0
November 22, 2006
相关PDF资料
PDF描述
ISL6612ACBZ IC DRIVER MOSFET SYNC BUCK 8SOIC
ISL6612BCBZ IC DRIVER MOSFET SYNC BUCK 8SOIC
ISL6613IR-T IC MOSFET DRVR SYNC BUCK 10-DFN
ISL6614AIR-T IC DRIVER DUAL SYNC BUCK 16-QFN
ISL6614BIRZ IC DRVR DUAL SYNC BUCK 16-QFN
相关代理商/技术参数
参数描述
ISL6610IRZ-T 功能描述:IC MOSFET DRVR DUAL SYNC 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET,电桥驱动器 - 外部开关 系列:- 标准包装:6,000 系列:*
ISL6611ACRZ 功能描述:IC REG CTRLR DOUBLER PWM 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:带卷 (TR)
ISL6611ACRZ-T 功能描述:IC REG CTRLR DOUBLER PWM 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:带卷 (TR)
ISL6611AIRZ 功能描述:IC REG CTRLR DOUBLER PWM 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:带卷 (TR)
ISL6611AIRZ-T 功能描述:IC REG CTRLR DOUBLER PWM 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:带卷 (TR)