参数资料
| 型号： | ISL6217CVZ-T |
| 厂商： | Intersil |
| 文件页数： | 9/19页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM INTEL PENT 38-TSSOP |
| 标准包装： | 2,500 |
| 应用： | 控制器，Intel Pentium? IMVP-IV，IMVP+ |
| 输入电压： | 5.5 V ~ 25 V |
| 输出数： | 1 |
| 工作温度： | -10°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-TFSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 38-TSSOP |
| 包装： | 带卷 (TR) |
ISL6217
ISL6217
250
I
1
I
2
200
Error
I DROOP
+
Amplifier
150
100
SOFT
R DROOP
+ V DROOP
C SOFT
EA+
50
0
250 500 750
Channel Switching Frequency, Fsw,
1000
( )
FIGURE 3.
SOFT-START TRACKING CIRCUITRY SHOWING
INTERNAL CURRENT SOURCES AND "DROOP"
FIGURE 4.
CHANNEL SWITCHING FREQUENCY VS. RFSET
FOR ACTIVE, DEEP AND DEEPER SLEEP
MODES OF OPERATION
The “Droop” current source, IDROOP, is proportional to
load current. This current source is used to reduce the
reference voltage on EA+ by the voltage drop across the
“Droop” resistor. A more in-depth explanation of “Droop”,
and the sizing of this resistor, can be found in the “Droop
Compensation” section of this document.
The choice of value for soft start capacitor is determined by
the maximum slew rate required for the application. An
example calculation is shown below. Using the combined I1
and I2 current sources on the SOFT pin as 130mA, and the
worst case slew rate of (10mV/μs), the SOFT capacitor is
calculated as follows:
PWRCH pin
A HIGH logic level on this pin enables two channel
operation and a LOW logic signal enables single channel
operation. By tying this pin to the STP_CPU# system
signal, (DSEN# pin on ISL6217) single channel operation
will be invoked during the light loading of both Deep and
Deeper Sleep. If single channel operation is desired only
during Deeper Sleep, the inversion of system signal
DPRSLPVR can be connected to this pin.
The aggressive gate-drive capability of ISL6217, coupled
with the single channel operation feature results in superior
efficiency performance over both light and heavy loads.
Frequency Setting
C SOFT = SOURCE = 130 μA ×
I
SlewRate
1 μs
10 mV
= 0 . 013 μF ≈ 0 . 012 μF
(EQ. 1)
Both channel switching frequencies are set up by a resistor
from the FSET pin to ground. The choice of FSET
resistance for a desired switching frequency can be
Gate-Drive Signals
The ISL6217 provides internal gate-drive for a two channel,
Synchronous Buck, Core Regulator. During two channel
mode of operation, the PWM drive signals are switched
180° out of phase to reduce ripple current delivered from
the DC rail and to the load.
The ISL6217 was designed with a 4 amp, low-side gate
current sinkability, and a 2 amp low-side gate current
source ability, to efficiently drive the latest, high-
performance MOSFETs. This feature will provide the
system designer with flexibility in MOSFET selection, as
well as optimum efficiency during Active mode of operation.
9
approximated using Figure 4. The switching frequency is
designed to operate between 250kHz and 1MHz per
phase.
CORE Voltage Programming
The voltage identification pins (VID0, VID1, VID2, VID3,
VID4 and VID5) set the DAC output voltage. These pins do
not have internal pull-up or pull-down capability. These pins
will recognize 1.0V, 3.3V, or 5.0V CMOS logic. Table 1
shows the command voltage, VDAC for the 6 bit VID
codes.
The IC responds to VID code changes as shown in
Figure 5. PGOOD is masked between these transitions.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6217EVAL2 | 制造商:Intersil Corporation 功能描述:PURCHASE ISL6216EVAL1, ISL6217EVAL2 OR ISL6218EVAL2 WITH IS - Bulk |
| ISL6218 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Precision Single-Phase Buck PWM Controller for Intel Mobile Voltage Positioning IMVP-IV and IMVP-IV |
| ISL6218CRZ | 功能描述:电流型 PWM 控制器 P6 MULTIPHS BUCK PWM CNTRLR FOR IMVP4 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6218CRZ-T | 功能描述:电流型 PWM 控制器 P6 MULTIPHS BUCK PWM CNTRLR FOR IMVP4 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6218CV | 功能描述:IC CTRLR INTEL PENT M 38-TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
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