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参数资料
| 型号： | ISL6263CEVAL1 |
| 厂商： | Intersil |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD 1 FOR ISL6263C |
| 标准包装： | 1 |
| 系列： | * |
ISL6263C
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 KELVIN SENSE AND INDUCTOR DCR CURRENT SENSE
ICOMP pin minus the output voltage measured at the VO
VR_ON
pin, is proportional to the total inductor current. This
information is used for overcurrent protection and current
V SOFT /V OUT
~100μs
90%
monitoring. 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 sense, an NTC
compensation network is optional to compensate the
positive temperature coefficient of the copper winding, thus
PGOOD
13 SWITCHING CYCLES
FIGURE 4. ISL6263C START-UP TIMING
Static Regulation
The output voltage V OUT will be regulated to the value set
by the VID inputs per Table 1. A true differential amplifier
connected to the VSEN and RTN pins implements processor
Kelvin sense for precise core voltage regulation at the GPU
voltage sense points.
The ISL6263C can accommodate DCR current sense or
discrete resistor current sense. The DCR current sense uses
the intrinsic series resistance of the output inductor, as
shown in the application circuit of Figure 2. The discrete
resistor current sense uses a shunt resistor in series with the
output inductor, as shown in the application circuit in
Figure 3. In both cases, the signal is fed to the non-inverting
input of the current sense amplifier at the ISP pin, where it is
measured differentially with respect to the output voltage of
the converter at the VO pin and amplified. The voltage at the
10
maintaining the current sense accuracy.
Processor Kelvin Voltage Sense
The remote voltage sense input pins VSEN and RTN of the
ISL6263C are to be terminated at the die of the GPU. Kelvin
sense 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 ISL6263C 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 ? .
FN6745.1
July 8, 2010
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6263CHRZ | 功能描述:直流/直流开关调节器 1-PHS INT DC/DC BUCK CNTRLR IMVP-6 W/IMON 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 |
| ISL6263CHRZ-T | 功能描述:直流/直流开关调节器 1-PHS INT DC/DC BUCK CNTRLR IMVP-6 W/IMON 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 |
| ISL6263CRZ | 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 |
| 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 |
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