参数资料
型号: ISL6323ACRZ
厂商: Intersil
文件页数: 5/36页
文件大小: 0K
描述: IC PWM CTRLR SYNC BUCK DL 48QFN
标准包装: 43
应用: 控制器,AMD SVI
输入电压: 5 V ~ 12 V
输出数: 2
输出电压: 最高 2V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 48-VFQFN 裸露焊盘
供应商设备封装: 48-QFN(7x7)
包装: 管件
ISL6323A
Functional Pin Description (Continued)
PIN NUMBER
39
40
41
42
49
SYMBOL
UGATE_NB
BOOT_NB
LGATE_NB
PVCC_NB
GND
DESCRIPTION
Connect this pin to the corresponding upper MOSFET gate. This pin provides the
PWM-controlled gate drive for the upper MOSFET and is monitored for shoot-through
prevention purposes.
This pin provides the bias voltage for the corresponding upper MOSFET drive. Connect
this pin to appropriately chosen external bootstrap capacitor. The internal bootstrap
diode connected to the PVCC_NB pin provides the necessary bootstrap charge.
Connect this pin to the corresponding MOSFET’s gate. This pin provides the
PWM-controlled gate drive for the lower MOSFET. This pin is also monitored by the
adaptive shoot-through protection circuitry to determine when the lower MOSFET has
turned off.
The power supply pin for the internal MOSFET driver for the Northbridge controller.
Connect this pin to any voltage from +5V to +12V depending on the desired MOSFET
gate-drive level. Decouple this pin with a quality 1.0μF ceramic capacitor.
GND is the bias and reference ground for the IC. The GND connection for the ISL6323A
is through the thermal pad on the bottom of the package.
Integrated Driver Block Diagram
PVCC
BOOT
UGATE
PWM
20K Ω
SOFT-START
GATE
SHOOT-
AND
FAULT LOGIC
CONTROL
LOGIC
THROUGH
PROTECTION
PHASE
10K Ω
LGATE
5
FN6878.1
May 12, 2010
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