参数资料
| 型号： | ISL8101IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC PWM CTRLR BUCK 2PHASE 24-QFN |
| 标准包装： | 6,000 |
| 应用： | 控制器，Intel VRM9，VRM10，AMD Hammer 应用 |
| 输入电压： | 4.6 V ~ 12 V |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 2.3 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN（4x4） |
| 包装： | 带卷 (TR) |
ISL8101
TABLE 3. VRM10 VOLTAGE IDENTIFICATION CODES
(Continued)
DYNAMIC VID (VID-ON-THE-FLY)
The ISL8101 is capable of executing on-the-fly output
VID4
0
1
1
1
1
1
1
1
1
VID3
0
1
1
1
1
1
1
1
1
VID2
0
1
1
1
1
1
1
0
0
VID1
0
1
1
0
0
0
0
1
1
VID0
0
0
0
1
1
0
0
1
1
VID5
0
1
0
1
0
1
0
1
0
VDAC
1.0875
1.1000
1.1125
1.1250
1.1375
1.1500
1.1625
1.1750
1.1875
voltage changes. The way the ISL8101 reacts to a change in
the VID code is dependent on the VID configuration. In
VRM9 or AMD Hammer settings, the ISL8101 checks for a
change in the VID code four times each switching cycle. The
VID code is the bit pattern present at pins VID4-VID0. If a
new code is established and it stays the same for 12
switching cycles, the ISL8101 begins changing the reference
by making one step change every four switching cycles until
it reaches the new VID code. Figure 5 depicts such a
transition, from 1.5V to 1.7V
1
1
1
1
0
0
1
1
0
0
1
0
1.2000
1.2125
01110
00110
V VID
VID CHANGE OCCURS HERE
1
1
1
1
0
0
0
0
1
1
1
0
1.2250
1.2375
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1.2500
1.2625
1.2750
1.2875
1.300
1.3125
1.3250
1.3375
1.3500
1.3625
1.3750
1.3875
1.4000
1.4125
1.4250
1.4375
1.4500
1.4625
1.4750
1.4875
1.5000
1.5125
1.5250
1.5375
1.5500
1.5625
1.5750
1.5875
1.6000
V REF (100mV/DIV)
1.5V
V OUT (100mV/DIV)
1.5V
FIGURE 5. TYPICAL DYNAMIC-VID OPERATION, VRM9 DAC
SETTING
In VRM10 setting, the ISL8101 checks for a change in the VID
code six times each switching cycle. If a new code is
established and it stays the same for 3 consecutive readings,
the ISL8101 recognizes the change and increments the
reference. Specific to VRM10, the processor controls the VID
transitions and is responsible for incrementing or
decrementing one VID step at a time. In VRM10 setting, the
ISL8101 will immediately change the reference to the new
requested value as soon as the request is validated; in cases
where the reference step is too large, the sudden change can
trigger overcurrent or overvoltage events.
In non-VRM10 settings, due to the way the ISL8101
recognizes VID code changes, up to one full switching
period may pass before a VID change registers. Thus, the
total time required for a VID change, t DVID , is dependent on
the switching frequency (f S ), the size of the change ( Δ V ID ),
and the time required to register the VID change. The
approximate time required for a ISL8101-based converter in
VRM9 configuration running at typical f S (222kHz) to
perform a 1.5V-to-1.7V reference voltage change is about
196μs, as calculated using Equation 6. (this example is also
illustrated in Figure 5).
t DVID ? ----- ? --------------------- + 13 ?
11
1 ? 4 Δ V VID ?
f S ? 0.025 ?
(EQ. 6)
FN9223.1
July 28, 2008
相关PDF资料 |
PDF描述 |
|---|---|
| MIC39501-2.5WU | IC REG LDO 2.5V 5A TO-263-5 |
| ISL6324CRZ-T | IC HYBRID CTRLR PWM DUAL 48-QFN |
| LT1963AEFE-3.3#PBF | IC REG LDO 3.3V 1.5A 16TSSOP |
| HIP6004DCRZ-T | IC CTRLR PWM VOLTAGE MON 20-QFN |
| LT1963AEFE-1.8#PBF | IC REG LDO 1.8V 1.5A 16TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL8102 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Two-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers |
| ISL8102CRZ | 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
| ISL8102CRZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL8102EVAL1 | 功能描述:EVAL BOARD 1 FOR ISL8102 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:* 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
| ISL8102IRZ | 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
发布紧急采购，3分钟左右您将得到回复。