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| 型号： | ADP2114-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 24/40页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 3.3V/1.8V |
| 设计资源： | Powering AD9268 with ADP2114 for Increased Efficiency (CN0137) |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 可调 |
| 电流 - 输出： | 4A，2A |
| 输入电压： | 2.75 ~ 5.5 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz，600kHz，1.2MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP2114 |
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ADP2114
CONVERTER CONFIGURATION
Data Sheet
SELECTING THE OUTPUT VOLTAGE
To set the output voltage, V OUT1 (V OUT2 ), select one of the six
fixed voltages, as shown in Table 4, by connecting the V1SET
(V2SET) pin to GND through an appropriate value resistor (see
Channel 1 and Channel 2, respectively. The feedback pin FB1
To limit output voltage accuracy degradation due to FB bias
current to less than 0.05% (0.5% maximum), ensure that the
divider string current is greater than 20 μA. To calculate the
desired resistor values, first determine the value of the bottom
divider string resistor, R1, by
R1 = V REF / I STRING
(2)
(3)
? V ? V REF ?
(FB2) should be directly connected to V OUT1 (V OUT2 ).
Table 4. Output Voltage Programming
R V1SET (?) ± 5% V OUT1 (V) R V2SET (?) ± 5% V OUT2 (V)
0 to GND 0.8 0 to GND 0.8
4.7 k to GND 1.2 4.7 k to GND 1.2
8.2 k to GND 1.5 8.2 k to GND 1.5
15 k to GND 1.8 15 k to GND 1.8
where:
V REF is 0.6 V, the internal reference.
I STRING is the resistor divider string current.
When R1 is determined, calculate the value of the top resistor,
R2, by
R2 = R1 ? OUT ?
? V REF ?
27 k to GND
47 k to GND
2.5
3.3
27 k to GND
47 k to GND
2.5
3.3
R FREQ
V IN
82 k to GND
0 to VDD
0.6 to <1.6
(adjustable)
1.6 to 3.3
(adjustable)
82 k to GND
0 to VDD
0.6 to <1.6
(adjustable)
1.6 to 3.3
(adjustable)
V1SET/
V2SET
VINx
ADP2114
R V1SET /
R V2SET
V OUT1 /V OUT2
If the required output voltage V OUT1 (V OUT2 ) is in the adjustable
range, from 0.6 V to less than 1.6 V, connect V1SET (V2SET)
through an 82 k? resistor to GND. For the adjustable output
voltage range of 1.6 V to 3.3 V, tie V1SET (V2SET) to VDD (see
GND
SWx
FB1/FB2
PGNDx
COMP1/
COMP2
L
set by a resistive voltage divider from the output voltage to the
feedback pin (see Figure 71). The ratio of the resistive voltage
divider sets the output voltage, while the absolute value of those
Figure 70. Configuration for Fixed Outputs
V IN
R FREQ
resistors sets the divider string current. For lower divider string
currents, the small 10 nA (0.1 μA maximum) FB bias current
should be taken into account when calculating the resistor
values. The FB bias current can be ignored for a higher divider
string current; however, this degrades efficiency at very light loads.
V1SET/
V2SET
VINx
ADP2114
SWx
R V1SET /
R V2SET
L
V OUT1 /V OUT2
R2
FB1/FB2
PGNDx
R1
GND
COMP1/
COMP2
Figure 71. Configuration for Adjustable Outputs
Rev. B | Page 24 of 40
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP2114-EVALZ | 制造商:Analog Devices 功能描述:4A Step-Down DC/DC Converter Evaluation 制造商:Analog Devices 功能描述:ADP2114, DC TO DC CONVERTER, STEP DOWN, EVAL BOARD |
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| ADP2116ACPZ-R7 | 功能描述:IC REG BUCK SYNC ADJ 32LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| ADP2116ACPZ-R7 | 制造商:Analog Devices 功能描述:DC/DC CONVERTER IC |
| ADP2116-BL1-EVZ | 功能描述:EVAL BOARD FOR ADP2116 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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