参数资料
| 型号： | ISL6263CRZ |
| 厂商： | Intersil |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | IC VREG CORE 5BIT 1PHASE 32-QFN |
| 标准包装： | 60 |
| 应用： | 转换器，Intel IMVP-6 |
| 输入电压： | 5 V ~ 25 V |
| 输出数： | 1 |
| 输出电压： | 0.41 V ~ 1.29 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 |
ISL6263
DROOP pin minus the output voltage measured at the VO
pin, is proportional to the total inductor current. This
information is used exclusively to achieve the IMVP-6+ load
line as well as the overcurrent protection. It is important to
note that this current measurement should not be confused
with the synthetic current ripple information created within
the R 3 modulator.
When using inductor DCR current sensing, an NTC element
is used to compensate the positive temperature coefficient of
the copper winding thus maintaining the load-line accuracy.
Processor Socket Kelvin Voltage Sensing
The remote voltage sense input pins VSEN and RTN of the
ISL6263 are to be terminated at the die of the GPU through
connections that mate at the processor socket. (The signal
names are Vcc_sense and Vss_sense respectively.) Kelvin
sensing allows the voltage regulator to tightly control the
processor voltage at the die, compensating for various
resistive voltage drops in the power delivery path.
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 ISL6263 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 Ropn1 and
Ropn2 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 Ω to
100 Ω.
VDD
L OUT
DCR
OCP
?
+
10 μ A
↓
+
DROOP
?
OCSET
VSUM
DFB
R OCSET
PHASE
R S
C OUT
ESR
+
+
Σ
+
?
DROOP
VO
VDIFF
+
?
VSEN
RTN
C FILTER1
R FILTER1
R FILTER2
V CC_SNS
V SS_SNS
To
Processor
Socket
Kelvin
Connections
C FILTER2
C FILTER3
FIGURE 5. SIMPLIFIED VOLTAGE DROOP CIRCUIT WITH GPU SOCKET KELVIN SENSING AND INDUCTOR DCR CURRENT SENSING
High Efficiency Diode Emulation Mode
The ISL6263 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. Depending upon the VID and FDE pin states, an
improvement in light-load efficiency can be achieved by
operating in discontinuous-conduction-mode (DCM) where
the low-side MOSFET is operated in diode-emulation-mode
(DEM), forcing the low-side MOSFET 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
11
source of the high-side MOSFET, or 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 in CCM when the output load current
is less than ? the inductor ripple current. Sinking negative
inductor through the low-side MOSFET lowers efficiency
through unnecessary conduction losses. Upon entering
DEM the PWM switching frequency is automatically shifted
downward by an increase of the window voltage V W of 33%.
The PWM switching frequency will continue to decrease as
the load continues to decrease. The reduction of PWM
FN9213.2
June 10, 2010
相关PDF资料 |
PDF描述 |
|---|---|
| ISL6263DHRZ | IC VREG 3BIT 1PHASE 32-QFN |
| ISL6264CRZ | IC CORE CTRLR TWO-PHASE 40-QFN |
| ISL6265AHRTZ-T | IC CTRLR MULTI-OUTPUT 48-TQFN |
| ISL6265CHRTZ | IC CTRLR MULTI-OUTPUT 48TQFN |
| ISL6265HRTZ-T | IC CTLR MULTI-OUTPUT 48-TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6263CRZ-T | 功能描述:直流/直流开关调节器 1 PHS INT DC/DC BUCK CNTRLR FOR INTEL RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ISL6263DEVAL1Z | 功能描述:EVAL BAORD 1 FOR ISL6263D RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:* 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL6263DHRZ | 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:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| 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 |
发布紧急采购，3分钟左右您将得到回复。