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参数资料
| 型号： | ADUM5403CRWZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 21/28页 |
| 文件大小： | 0K |
| 描述： | IC ISOLATOR 4CH DCDC CONV 16SOIC |
| 标准包装： | 1,000 |
| 系列： | IsoPower®, iCoupler® |
| 输入 - 1 侧/2 侧： | 3/1 |
| 通道数： | 4 |
| 电源电压： | 3.3V，5V |
| 电压 - 隔离： | 2500Vrms |
| 数据速率： | 25Mbps |
| 传输延迟： | 45ns |
| 输出类型： | 逻辑 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 105°C |
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Data Sheet
APPLICATIONS INFORMATION
ADuM5401/ADuM5402/ADuM5403/ADuM5404
The dc-to-dc converter section of the ADuM5401 / ADuM5402 /
ADuM5403 / ADuM5404 works on principles that are common to
most switching power supplies. It has a secondary side controller
architecture with isolated pulse-width modulation (PWM)
feedback. V DD1 power is supplied to an oscillating circuit that
switches current into a chip scale air core transformer. Power
transferred to the secondary side is rectified and regulated to
either 3.3 V or 5 V. The secondary (V ISO ) side controller regulates
BYPASS < 2mm
V DD1
GND 1
V IA /V OA
V IB /V OB
V IC /V OC
V OD
RC OUT
GND 1
V ISO
GND ISO
V OA /V IA
V OB /V IB
V OC /V IC
V ID
V SEL
GND ISO
the output by creating a PWM control signal that is sent to the
primary (V DD1 ) side by a dedicated i Coupler data channel. The
PWM modulates the oscillator circuit to control the power being
sent to the secondary side. Feedback allows for significantly higher
power and efficiency.
The ADuM5401 / ADuM5402 / ADuM5403 / ADuM5404 implement
undervoltage lockout (UVLO) with hysteresis on the V DD1 power
input. This feature ensures that the converter does not enter
oscillation due to noisy input power or slow power-on ramp rates.
PCB LAYOUT
The ADuM5401 / ADuM5402 / ADuM5403 / ADuM5404 digital
isolators with 0.5 W iso Power integrated dc-to-dc converter
require no external interface circuitry for the logic interfaces.
Power supply bypassing is required at the input and output
supply pins (see Figure 25). Note that low ESR bypass capacitors
are required between Pin 1 and Pin 2 and between Pin 15 and
Pin 16, as close to the chip pads as possible.
The power supply section of the ADuM5401 / ADuM5402 /
ADuM5403 / ADuM5404 uses a 180 MHz oscillator frequency
to pass power efficiently through its chip scale transformers. In
addition, the normal operation of the data section of the i Coupler
introduces switching transients on the power supply pins. Bypass
capacitors are required for several operating frequencies. Noise
suppression requires a low inductance, high frequency capacitor;
ripple suppression and proper regulation require a large value
capacitor. These are most conveniently connected between Pin 1
and Pin 2 for V DD1 and between Pin 15 and Pin 16 for V ISO .
To suppress noise and reduce ripple, a parallel combination of
at least two capacitors is required. The recommended capacitor
values are 0.1 μF and 10 μF for V DD1 and V ISO . The smaller
capacitor must have a low ESR; for example, use of a ceramic
capacitor is advised.
The total lead length between the ends of the low ESR capacitor
and the input power supply pin must not exceed 2 mm. Installing
the bypass capacitor with traces more than 2 mm in length may
result in data corruption. Consider bypassing between Pin 1 and
Pin 8 and between Pin 9 and Pin 16 unless both common ground
Figure 25. Recommended PCB Layout
In applications involving high common-mode transients, ensure
that board coupling across the isolation barrier is minimized.
Furthermore, design the board layout such that any coupling that
does occur affects all pins equally on a given component side.
Failure to ensure this can cause voltage differentials between
pins exceeding the absolute maximum ratings for the device
as specified in Table 19, thereby leading to latch-up and/or
permanent damage.
The ADuM5401 / ADuM5402 / ADuM5403 / ADuM5404 are power
devices that dissipate approximately 1 W of power when fully
loaded and running at maximum speed. Because it is not possible
to apply a heat sink to an isolation device, the devices primarily
depend on heat dissipation into the PCB through the GND
pins. If the devices are used at high ambient temperatures, provide
a thermal path from the GND pins to the PCB ground plane.
The board layout in Figure 25 shows enlarged pads for Pin 8 and
Pin 9. Large diameter vias should be implemented from the pad to
the ground, and power planes should be used to reduce inductance.
Multiple vias should be implemented from the pad to the ground
plane to significantly reduce the temperature inside the chip.
The dimensions of the expanded pads are at the discretion of
the designer and depend on the available board space.
THERMAL ANALYSIS
The ADuM5401 / ADuM5402 / ADuM5403 / ADuM5404 parts
consist of four internal die attached to a split lead frame with two
die attach paddles. For the purposes of thermal analysis, the die
is treated as a thermal unit, with the highest junction temperature
reflected in the θ JA from Table 14. The value of θ JA is based on
measurements taken with the parts mounted on a JEDEC standard,
4-layer board with fine width traces and still air. Under normal
operating conditions, the ADuM5401 / ADuM5402 / ADuM5403 /
ADuM5404 devices operate at full load across the full temperature
range without derating the output current. However, following the
recommendations in the PCB Layout section decreases thermal
resistance to the PCB, allowing increased thermal margins in
high ambient temperatures.
pins are connected together close to the package.
Rev. C | Page 21 of 28
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADUM5403W | 制造商:AD 制造商全称:Analog Devices 功能描述:Quad-Channel Isolators with Integrated DC-to-DC Converter |
| ADUM5403WCRWZ | 功能描述:IC ISOLATOR 4CH DCDC CONV 16SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:IsoPower®, iCoupler® 产品培训模块:IsoLoop® Isolator 标准包装:50 系列:IsoLoop® 输入 - 1 侧/2 侧:5/0 通道数:5 电源电压:3 V ~ 5.5 V 电压 - 隔离:2500Vrms 数据速率:110Mbps 传输延迟:12ns 输出类型:CMOS 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 工作温度:-40°C ~ 85°C 其它名称:390-1053-5 |
| ADUM5403WCRWZ-1 | 功能描述:ISOLATOR 4CH DCDC CONV 16SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:* 产品培训模块:IsoLoop® Isolator 标准包装:50 系列:IsoLoop® 输入 - 1 侧/2 侧:5/0 通道数:5 电源电压:3 V ~ 5.5 V 电压 - 隔离:2500Vrms 数据速率:110Mbps 传输延迟:12ns 输出类型:CMOS 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 工作温度:-40°C ~ 85°C 其它名称:390-1053-5 |
| ADUM5403WCRWZ-1RL | 功能描述:ISOLATOR 4CH DCDC CONV 16SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:* 产品培训模块:IsoLoop® Isolator 标准包装:50 系列:IsoLoop® 输入 - 1 侧/2 侧:5/0 通道数:5 电源电压:3 V ~ 5.5 V 电压 - 隔离:2500Vrms 数据速率:110Mbps 传输延迟:12ns 输出类型:CMOS 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 工作温度:-40°C ~ 85°C 其它名称:390-1053-5 |
| ADUM5403WCRWZ-RL | 功能描述:IC ISOLATOR 4CH DCDC CONV 16SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:IsoPower®, iCoupler® 产品培训模块:IsoLoop® Isolator 标准包装:50 系列:IsoLoop® 输入 - 1 侧/2 侧:5/0 通道数:5 电源电压:3 V ~ 5.5 V 电压 - 隔离:2500Vrms 数据速率:110Mbps 传输延迟:12ns 输出类型:CMOS 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 工作温度:-40°C ~ 85°C 其它名称:390-1053-5 |
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