参数资料
型号: ISL6566CR
厂商: Intersil
文件页数: 8/29页
文件大小: 0K
描述: IC CTRLR PWM BUCK 3PHASE 40-QFN
标准包装: 50
应用: 控制器,Intel VRM9,VRM10,AMD Hammer 应用
输入电压: 3 V ~ 12 V
输出数: 1
输出电压: 0.8 V ~ 1.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 40-VFQFN 裸露焊盘
供应商设备封装: 40-QFN(6x6)
包装: 管件
ISL6566
Timing Diagram
t PDHUGATE
UGATE
LGATE
t FLGATE
t RUGATE
t FUGATE
t RLGATE
t PDHLGATE
Simplified Power System Diagram
+12V IN
+5V IN
Q1
CHANNEL1
Q2
VID
5-6
DAC
ISL6566
CHANNEL2
Q3
Q4
V OUT
Q5
CHANNEL3
Q6
Functional Pin Description
VCC
VCC is the bias supply for the ICs small-signal circuitry.
Connect this pin to a +5V supply and locally decouple using
a quality 1.0 μ F ceramic capacitor.
PVCC1, PVCC2, PVCC3
These pins are the power supply pins for the corresponding
channel MOSFET drive, and can be connected to any
voltage from +5V to +12V, depending on the desired
MOSFET gate drive level.
The number of active channels is determined by the state of
PVCC2 and PVCC3. Leave PVCC3 unconnected or
grounded for 2-phase operation. For 1-phase operation
leave both PVCC3 and PVCC2 unconnected or grounded.
8
GND
GND is the bias and reference ground for the IC.
ENLL
This pin is a threshold-sensitive (approximately 0.66V) enable
input for the controller. Held low, this pin disables controller
operation. Pulled high, the pin enables the controller for
operation. ENLL has a internal 1.0 μ A pull-up to 5V.
FS
A resistor, placed from FS to ground, will set the switching
frequency. Refer to Equation 34 for proper resistor
calculation.
FN9178.4
March 9, 2006
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