参数资料
| 型号： | ISL62881HRTZ |
| 厂商： | Intersil |
| 文件页数： | 24/35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 5. LAYOUT CONSIDERATIONS
NAME
GND
CLK_EN#
PGOOD
RBIAS
VR_TT#
NTC
VW
COMP
FB
VSEN
RTN
VDD
IMON
ISUM-
ISUM+
LAYOUT CONSIDERATION
Create analog ground plane underneath the controller and the analog signal processing components. Don’t let the power ground plane
overlap with the analog ground plane. Avoid noisy planes/traces (e.g.: phase node) from crossing over/overlapping with the analog plane.
No special consideration.
No special consideration.
Place the R BIAS resistor (R 16 ) in general proximity of the controller. Low impedance connection to the analog ground plane.
No special consideration.
The NTC thermistor (R9) needs to be placed close to the thermal source that is monitor to determine thermal throttling. Usually it’s placed
close to phase-1 high-side MOSFET.
Place capacitor (C4) across VW and COMP in close proximity of the controller.
Place compensator components (C3, C5, C6 R7, R11, R10 and C11) in general proximity of the controller.
Place the VSEN/RTN filter (C12, C13) in close proximity of the controller for good decoupling.
A capacitor (C16) decouples it to GND. Place it in close proximity of the controller.
Place the filter capacitor (C21) close to the CPU.
Place the current sensing circuit in general proximity of the controller.
Place C82 very close to the controller.
Place NTC thermistors R 42 next to inductor (L1) so it senses the inductor temperature correctly.
The power stage sends a pair of VSUM+ and VSUM- signals to the controller. Run these two signal traces in parallel fashion with decent
width (>20mil).
IMPORTANT: Sense the inductor current by routing the sensing circuit to the inductor pads.
Route R 63 to the phase-node side pad of inductor L1. Route the other current sensing trace to the output side pad of inductor L1.
If possible, route the traces on a different layer from the inductor pad layer and use vias to connect the traces to the center of the pads.
If no via is allowed on the pad, consider routing the traces into the pads from the inside of the inductor. The following drawings show the
two preferred ways of routing current sensing traces.
INDUCTOR
VIAS
CURRENT-
SENSING TRACES
INDUCTOR
CURRENT-
SENSING TRACES
VIN
BOOT
UGATE
PHASE
A capacitor (C17) decouples it to GND. Place it in close proximity of the controller.
Use decent wide trace (>30mil). Avoid any sensitive analog signal trace from crossing over or getting close.
Run these two traces in parallel fashion with decent width (>30mil). Avoid any sensitive analog signal trace from crossing over or getting
close. Recommend routing PHASE trace to the high-side MOSFET (Q2 and Q8) source pins instead of general phase node copper.
VSSP Run these two traces in parallel fashion with decent width (>30mil). Avoid any sensitive analog signal trace from crossing over or getting
LGATE
or
LGATEa and
LGATEb
VCCP
VID0~6
VR_ON
DPRSLPVR
close. Recommend routing VSSP to the low-side MOSFET (Q3 and Q9) source pins instead of general power ground plane for better
performance.
A capacitor (C22) decouples it to GND. Place it in close proximity of the controller.
No special consideration.
No special consideration.
No special consideration.
Phase Node Minimize phase node copper area. Don’t let the phase node copper overlap with/getting close to other sensitive traces. Cut the power
ground plane to avoid overlapping with phase node copper.
Minimize the loop consisting of input capacitor, high-side MOSFETs and low-side MOSFETs (e.g.: C27, C33, Q2, Q8, Q3 and Q9).
24
FN6924.3
June 16, 2011
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相关代理商/技术参数 |
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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 |
| ISL62882B | 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 |
| 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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