參數資料
型號: ISL6566CRZA-T
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Three-Phase Buck PWM Controller with Integrated MOSFET Drivers for VRM9, VRM10, and AMD Hammer Applications
中文描述: SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PQCC40
封裝: 6 X 6 MM, ROHS COMPLIANT, PLASTIC, MO-220-VJJD, MLFP, QFN-40
文件頁數: 7/28頁
文件大?。?/td> 799K
代理商: ISL6566CRZA-T
7
FN9178.3
July 25, 2005
Timing Diagram
Simplified Power System Diagram
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.
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.
UGATE
LGATE
t
FLGATE
t
PDHUGATE
t
RUGATE
t
FUGATE
t
PDHLGATE
t
RLGATE
CHANNEL1
+5V
IN
V
OUT
Q1
Q2
ISL6566
CHANNEL2
Q3
Q4
DAC
5-6
VID
CHANNEL3
Q5
Q6
+12V
IN
ISL6566
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PDF描述
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