参数资料
型号: ADP1878ACPZ-0.6-R7
厂商: Analog Devices Inc
文件页数: 36/40页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 14LFCSP
标准包装: 1,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 600kHz
占空比: 65%
电源电压: 2.95 V ~ 20 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 14-WFDFN 裸露焊盘,CSP
包装: 带卷 (TR)
ADP1878/ADP1879
SW
PGND
Data Sheet
LAYER 1: SENSE LINE FOR SW
(DRAIN OF LOWER MOSFET)
LAYER 1: SENSE LINE FOR PGND
(SOURCE OF LOWER MOSFET)
Figure 91. Primary Current Pathways During the On State of the High-Side
MOSFET (Left Arrow) and the On State of the Low-Side MOSFET (Right Arrow)
DIFFERENTIAL SENSING
Because the ADP1878 / ADP1879 operate in valley current-mode
control, a differential voltage reading is taken across the drain
and source of the low-side MOSFET. Connect the drain of the
low-side MOSFET s as close as possible to the SW pin (Pin 13) of
the IC. Likewise, connect the source as close as possible to the
PGND pin (Pin 11) of the IC. When possible, keep both of
Figure 92. Drain/Source Tracking Tapping of the Low-Side MOSFET for CS
Amp Differential Sensing (Yellow Sense Line on Layer 2)
In addition, employ differential sensing between the outermost
output capacitor and the feedback resistor divider (see Figure 89
and Figure 90). Connect the positive terminal of the output
capacitor to the top resistor (R T ). Connect the negative terminal
of the output capacitor to the negative terminal of the bottom
resistor, which connects to the analog ground plane as well.
Keep both of these track lines, as previously mentioned, narrow
and away from any other active device or voltage/ current path.
these track lines narrow and away from any other active device
or voltage/current path.
Rev. B | Page 36 of 40
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ADP1878ACPZ-1.0-R7 功能描述:IC REG CTRLR BUCK PWM CM 14LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)
ADP1879-0.3-EVALZ 功能描述:BOARD EVAL FOR ADP1879-0.3 RoHS:是 类别:编程器,开发系统 >> 评估板 - DC/DC 与 AC/DC(离线)SMPS 系列:* 标准包装:1 系列:- 主要目的:DC/DC,步降 输出及类型:1,非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND
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ADP1879-1.0-EVALZ 功能描述:BOARD EVAL FOR ADP1879-1.0 RoHS:是 类别:编程器,开发系统 >> 评估板 - DC/DC 与 AC/DC(离线)SMPS 系列:* 标准包装:1 系列:- 主要目的:DC/DC,步降 输出及类型:1,非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND
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