参数资料
| 型号： | ISL62882BHRTZ-T |
| 厂商： | Intersil |
| 文件页数： | 29/42页 |
| 文件大小： | 0K |
| 描述： | IC REG PWM 2PHASE BUCK 48TQFN |
| 标准包装： | 4,000 |
| 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： | 48-WFQFN 裸露焊盘 |
| 供应商设备封装： | 48-TQFN-EP（6x6） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页当前第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页
ISL62882, ISL62882B
TABLE 6. LAYOUT CONSIDERATION (Continued)
TABLE 6. LAYOUT CONSIDERATION (Continued)
PIN
14
15
NAME
ISUM-
ISUM+
LAYOUT CONSIDERATION
Place the current sensing circuit in general
proximity of the controller.
Place C82 very close to the controller.
PIN
26
27
NAME
LGATE2
VSSP2
LAYOUT CONSIDERATION
Run these two traces in parallel fashion with
decent width (>30mil). Avoid any sensitive analog
signal trace from crossing over or getting close.
Place NTC thermistors R42 next to phase-1
inductor (L1) so it senses the inductor temperature
correctly.
Each phase of the power stage sends a pair of
Recommend routing VSSP2 to the phase-2 low-
side MOSFET (Q5 and Q1) source pins instead of
general power ground plane for better
performance.
VSUM+ and VSUM- signals to the controller. Run
these two signals traces in parallel fashion with
decent width (>20mil).
IMPORTANT: Sense the inductor current by routing
the sensing circuit to the inductor pads.
Route R63 and R71 to the phase-1 side pad of
inductor L1. Route R88 to the output side pad of
inductor L1.
Route R65 and R72 to the phase-2 side pad of
inductor L2. Route R90 to the output side pad of
inductor L2.
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
28
29
30
31~37
38
PHASE2
UGATE2
BOOT2
VID0~6
VR_ON
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 PHASE2 trace to the phase-2
high-side MOSFET (Q4 and Q10) source pins
instead of general phase-2 node copper.
Use decent wide trace (>30mil). Avoid any
sensitive analog signal trace from crossing over or
getting close.
No special consideration.
No special consideration.
via is allowed on the pad, consider routing the
39
DPRSLPVR No special consideration.
traces into the pads from the inside of the inductor.
The following drawings show the two preferred
40
CLK_EN#
No special consideration.
ways of routing current sensing traces.
Other Phase Node Minimize phase node copper area. Don’t let the
Inductor
Inductor
phase node copper overlap with/getting close to
other sensitive traces. Cut the power ground plane
to avoid overlapping with phase node copper.
Vias
Other
Minimize the loop consisting of input capacitor,
high-side MOSFETs and low-side MOSFETs
(e.g., C27, C33, Q2, Q8, Q3 and Q9).
Current-Sensing
Traces
Current-Sensing
Traces
16
17
18
19
20
21
22
23
24
25
VDD
VIN
IMON
BOOT1
UGATE1
PHASE1
VSSP1
LGATE1a
LGATE1b
VCCP
A capacitor (C16) decouples it to GND. Place it in
close proximity of the controller.
A capacitor (C17) decouples it to GND. Place it in
close proximity of the controller.
Place the filter capacitor (C21) close to the CPU.
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 PHASE1 trace to the phase-1
high-side MOSFET (Q2 and Q8) source pins instead
of general phase-1 node copper.
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 VSSP1 to the phase-1
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.
29
FN6890.4
June 21, 2011
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| ISL62882CEVAL2Z | 功能描述:EVAL BOARD FOR ISL62882C 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 |
| ISL62882CHRTZ | 功能描述:电流型 PWM 控制器 2 PHS PWM BUCKG FOR MICROPROC PWR SUP RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL62882CHRTZ-T | 功能描述:电流型 PWM 控制器 2 PHS PWM BUCKG FOR MICROPROC PWR SUP RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL62882CIRTZ | 功能描述:电流型 PWM 控制器 2 PHS PWM BUCKG FOR MICROPROC PWR SUP RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL62882CIRTZ-T | 功能描述:电流型 PWM 控制器 2 PHS PWM BUCKG FOR MICROPROC PWR SUP RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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