参数资料
| 型号： | ISL62881HRTZ |
| 厂商： | Intersil |
| 文件页数： | 15/35页 |
| 文件大小： | 0K |
| 描述： | IC REG PWM SGL PHASE 28TQFN |
| 标准包装： | 75 |
| 应用： | 控制器，Intel IMVP-6.5? |
| 输入电压： | 5 V ~ 25 V |
| 输出数： | 1 |
| 输出电压： | 0.013 V ~ 1.5 V |
| 工作温度： | -10°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 管件 |
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ISL62881, ISL62881B
TABLE 1. VID TABLE (Continued)
TABLE 1. VID TABLE (Continued)
VID6
1
1
1
1
1
1
1
1
1
VID5
0
0
0
0
0
0
0
0
0
VID4
0
0
0
1
1
1
1
1
1
VID3
1
1
1
0
0
0
0
0
0
VID2
1
1
1
0
0
0
0
1
1
VID1
0
1
1
0
0
1
1
0
0
VID0
1
0
1
0
1
0
1
0
1
V O
(V)
0.5375
0.5250
0.5125
0.5000
0.4875
0.4750
0.4625
0.4500
0.4375
VID6
1
1
1
1
1
1
1
1
1
VID5
1
1
1
1
1
1
1
1
1
VID4
1
1
1
1
1
1
1
1
1
VID3
0
1
1
1
1
1
1
1
1
VID2
1
0
0
0
0
1
1
1
1
VID1
1
0
0
1
1
0
0
1
1
VID0
1
0
1
0
1
0
1
0
1
V O
(V)
0.0125
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
1
1
0
0
1
1
0
0
1
1
1
1
0
1
0.4250
0.4125
1
1
0
0
1
1
1
1
0
0
0
0
0
1
0.4000
0.3875
R DROOP
VCC SENSE
1
1
0
0
1
1
1
1
0
0
1
1
0
1
0.3750
0.3625
FB
V DROOP
I DROOP
VR LOCAL VO
“CATCH ” RESISTOR
1
1
0
0
1
1
1
1
1
1
0
0
0
1
0.3500
0.3375
COMP
E/A
Σ
VDAC
DAC
VIDS
VID<0:6>
1
0
1
1
1
1
0
0.3250
RTN
1
1
0
1
1
0
1
0
1
0
1
0
1
0
0.3125
0.3000
INTERNAL TO IC
X1
VSS
VSS SENSE
1
1
1
1
1
1
1
1
1
1
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
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
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
0.2875
0.2750
0.2625
0.2500
0.2375
0.2250
0.2125
0.2000
0.1875
0.1750
0.1625
0.1500
0.1375
0.1250
“CATCH”
RESISTOR
FIGURE 12. DIFFERENTIAL SENSING AND LOAD LINE
IMPLEMENTATION
As the load current increases from zero, the output voltage will
droop from the VID table value by an amount proportional to the
load current to achieve the load line. The ISL62881 can sense
the inductor current through the intrinsic DC Resistance (DCR)
resistance of the inductors as shown in Figure 1 or through
resistors in series with the inductors as shown in Figure 2. In both
methods, capacitor C n voltage represents the inductor total
currents. A droop amplifier converts C n voltage into an internal
current source with the gain set by resistor R i . The current source
is used for load line implementation, current monitor and
overcurrent protection.
Figure 12 shows the load line implementation. The ISL62881
drives a current source I droop out of the FB pin, described by
Equation 1.
I droop = ----------------
1
1
1
1
0
1
1
0
1
0
1
0
1
0
0.1125
0.1000
2xV Cn
R i
(EQ. 1)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
0
1
1
0
0
1
0
1
0
1
0.0875
0.0750
0.0625
0.0500
0.0375
When using inductor DCR current sensing, a single NTC element
is used to compensate the positive temperature coefficient of the
copper winding thus sustaining the load line accuracy with
reduced cost.
I droop flows through resistor R droop and creates a voltage drop,
as shown in Equation 2.
1
1
1
0
1
1
0
0.0250
V droop = R droop × I droop
(EQ. 2)
15
FN6924.3
June 16, 2011
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| ISL62881HRTZ-T | 功能描述:直流/直流开关调节器 1 PHS PWM BUCKG FOR MICROPROCESR PWR SUP 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 |
| ISL62882 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multiphase PWM Regulator for IMVP-6.5 Mobile CPUs and GPUs |
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| ISL62882BHRTZ | 功能描述:直流/直流开关调节器 2 PHS PWM BUCKG FOR MICROPROC PWR SUP 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 |
| ISL62882BHRTZR5411 | 制造商:Intersil Corporation 功能描述: |
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