参数资料
| 型号： | ISL6263DHRZ |
| 厂商： | Intersil |
| 文件页数： | 10/17页 |
| 文件大小： | 0K |
| 描述： | IC VREG 3BIT 1PHASE 32-QFN |
| 标准包装： | 60 |
| 应用： | 转换器，GPU 内核电源 |
| 输入电压： | 5 V ~ 25 V |
| 输出数： | 1 |
| 输出电压： | 0.7 V ~ 1.09 V |
| 工作温度： | -10°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN（5x5） |
| 包装： | 管件 |
ISL6263D
TABLE 1. VID AND OFFSET TRUTH TABLE
DAC OUTPUT VOLTAGE (V SOFT ) (mV)
VID CODE
OFFSET1 = 0
OFFSET1 = 1
VID2
0
0
0
0
1
1
1
1
VID1
0
0
1
1
0
0
1
1
VID0
0
1
0
1
0
1
0
1
OFFSET0 = 0
1050
1000
950
900
850
800
750
700
OFFSET0 = 1
1062.5
1012.5
962.5
912.5
862.5
812.5
762.5
712.5
OFFSET0 = 0
1075
1025
975
925
875
825
775
725
OFFSET0 = 1
1087.5
1037.5
987.5
937.5
887.5
837.5
787.5
737.5
Since the voltage feedback is sensed at the processor die,
removing the GPU will open the voltage feedback path of the
regulator, causing the output voltage to rise towards VIN.
The ISL6263D will shut down when the voltage between the
VO and VSS pins exceeds the severe overvoltage protection
threshold V OVPS of 1.55V. To prevent this issue from
occurring, it is recommended to install resistors R OPN1 and
R OPN2 , as shown in Figure 5. These resistors provide
voltage feedback from the regulator local output in the
absence of the GPU. These resistors should be in the range
of 20 ? to 100 ? .
Diode Emulation Mode and Audio Filter Operation
The ISL6263D operates in continuous-conduction-mode
(CCM) during heavy load for minimum conduction loss by
forcing the low-side MOSFET to operate as a synchronous
rectifier. An improvement in light-load efficiency is achieved
by allowing the converter to operate in diode-emulation
mode (DEM) where the low-side MOSFET behaves as a
smart-diode, forcing the device to block negative inductor
current flow.
Positive-going inductor current flows from either the source of
the high-side MOSFET, or the drain of the low-side MOSFET.
Negative-going inductor current flows into the source of the
high-side MOSFET, or into the drain of the low-side MOSFET.
When the low-side MOSFET conducts positive inductor
current, the phase voltage will be negative with respect to the
VSS pin. Conversely, when the low-side MOSFET conducts
negative inductor current, the phase voltage will be positive
with respect to the VSS pin. Negative inductor current occurs
when the output DC load current is less than ? the inductor
ripple current. Sinking negative inductor current through the
low-side MOSFET lowers efficiency through unnecessary
VDD
L OUT
DCR
-
OCP
+
10μA
↓
+
Isense
-
OCSET
ISP
ISN
R OCSET
PHASE
R S
C OUT
ESR
+
-
ICOMP
VO
+
-
VSEN
RTN
C FILTER1
R FILTER1
R FILTER2
V OUT
V GND
TO
PROCESSOR
KELVIN
CONNECTIONS
VDIFF
C FILTER2
C FILTER3
FIGURE 5. SIMPLIFIED GPU VOLTAGE KELVIN SENSE AND INDUCTOR DCR CURRENT SENSE
10
FN6753.1
July 8, 2010
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6263DHRZ-T | 功能描述:IC VREG 3BIT 1PHASE 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°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 |
| ISL6263EVAL1 | 制造商:Intersil Corporation 功能描述:ISL6263 EVALUATION BOARD 1 - IMVP LICENSE REQUIRED - Bulk |
| ISL6264 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Two-Phase Core Controller for AMD Mobile Turion CPUs |
| ISL6264CRZ | 功能描述:IC CORE CTRLR TWO-PHASE 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°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 |
| ISL6264CRZ-T | 功能描述:IC CORE CTRLR TWO-PHASE 40-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°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 |
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