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参数资料
| 型号： | ISL6615IBZ |
| 厂商： | Intersil |
| 文件页数： | 8/11页 |
| 文件大小： | 0K |
| 描述： | IC MOSFET DRVR SYNC HF 6A 8-SOIC |
| 标准包装： | 980 |
| 配置： | 高端和低端，同步 |
| 输入类型： | PWM |
| 延迟时间： | 10ns |
| 电流 - 峰： | 2.5A |
| 配置数： | 1 |
| 输出数： | 2 |
| 高端电压 - 最大（自引导启动）： | 36V |
| 电源电压： | 6.8 V ~ 13.2 V |
| 工作温度： | -40°C ~ 70°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： | 管件 |
ISL6615
PVCC
BOOT
P Qg_TOT = P Qg_Q1 + P Qg_Q2 + I Q ? VCC
(EQ. 2)
D
P Qg_Q1 = --------------------------------------- ? F SW ? N Q1
Q G1 ? PVCC 2
V GS1
R HI1
G
C GD
C DS
P Qg_Q2 = --------------------------------------- ? F SW ? N Q2
Q G2 ? PVCC 2
V GS2
R LO1
R G1
R GI1
C GS
S
Q1
PHASE
I DR = ? ----------------------------------------------------- + ----------------------------------------------------- ? ? F SW + I Q
? Q G1 ? PVCC ? N Q1 Q G2 ? PVCC ? N Q2 ?
? V GS1 V GS2 ?
(EQ. 3)
where the gate charge (Q G1 and Q G2 ) is defined at a
particular gate to source voltage (V GS1 and V GS2 ) in the
corresponding MOSFET datasheet; I Q is the driver ’s total
FIGURE 3. TYPICAL UPPER-GATE DRIVE TURN-ON PATH
PVCC
D
quiescent current with no load at both drive outputs; N Q1
and N Q2 are the number of upper and lower MOSFETs,
respectively; PVCC is the drive voltage for both upper and
lower FETs. The I Q *VCC product is the quiescent power of
the driver without capacitive load and is typically 200mW at
300kHz and VCC = PVCC = 12V.
R HI2
R LO2
G
R G2
C GD
R GI2
C GS
C DS
Q2
S
The total gate drive power losses are dissipated among the
resistive components along the transition path. The drive
resistance dissipates a portion of the total gate drive power
losses, the rest will be dissipated by the external gate
resistors (R G1 and R G2 ) and the internal gate resistors
(R GI1 and R GI2 ) of MOSFETs. Figures 3 and 4 show the
typical upper and lower gate drives turn-on transition path.
The power dissipation on the driver can be roughly
estimated, as shown in Equation 4.
FIGURE 4. TYPICAL LOWER-GATE DRIVE TURN-ON PATH
Application Information
Layout Considerations
The parasitic inductances of the PCB and of the power
devices’ packaging (both upper and lower MOSFETs) can
P DR_UP = ? -------------------------------------- + ---------------------------------------- ? ? ---------------------
? R HI1 + R EXT1 R LO1 + R EXT1 ?
P DR_LOW = ? ? ? ---------------------
? R HI2 + R EXT2 R LO2 + R EXT2 ?
P DR = P DR_UP + P DR_LOW + I Q ? VCC
? R HI1 R LO1 ? P Qg_Q1
? R HI2 R LO2 ? P Qg_Q2
-------------------------------------- + ----------------------------------------
2
2
(EQ. 4)
cause serious ringing, exceeding the device’s absolute
maximum ratings. A good layout helps reduce the ringing on
the switching node (PHASE) and significantly lowers the
stress applied to the output drives. The following advice is
meant to lead to an optimized layout and performance:
? Keep decoupling loops (VCC-GND, PVCC-GND and
BOOT-PHASE) short and wide (at least 25 mils). Avoid
using vias on decoupling components other than their
R EXT1 = R G1 + -------------
R EXT2 = R G2 + -------------
R GI1
N Q1
8
R GI2
N Q2
ground terminals, which should be on a copper plane with
at least two vias.
? Minimize trace inductance, especially on low-impedance
lines. All power traces (UGATE, PHASE, LGATE, GND,
PVCC, VCC, GND) should be short and wide (at least
25 mils). Try to place power traces on a single layer,
otherwise, two vias on interconnection are preferred
where possible. For no connection (NC) pins on the QFN
part, connect it to the adjacent net (LGATE2/PHASE2) can
reduce trace inductance.
FN6481.0
April 24, 2008
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| ISL6615IBZ-T | 功能描述:IC MOSFET DRVR SYNC HF 6A 8-SOIC 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:50 系列:- 配置:高端 输入类型:非反相 延迟时间:200ns 电流 - 峰:250mA 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:600V 电源电压:12 V ~ 20 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-DIP 包装:管件 其它名称:*IR2127 |
| ISL6615IRZ | 功能描述:IC MOSFET DRVR SYNC HF 6A 10-DFN 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:50 系列:- 配置:高端 输入类型:非反相 延迟时间:200ns 电流 - 峰:250mA 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:600V 电源电压:12 V ~ 20 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-DIP 包装:管件 其它名称:*IR2127 |
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| ISL6617CRZ | 功能描述:功率驱动器IC PHS SPLITTER COM 10LD 3X3 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 |
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