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| 型号： | ADUM6201ARIZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/28页 |
| 文件大小： | 0K |
| 描述： | IC ISOLATOR DGTL 2CH 16SOIC |
| 标准包装： | 37 |
| 系列： | IsoPower®, iCoupler® |
| 输入 - 1 侧/2 侧： | 1/1 |
| 通道数： | 2 |
| 电源电压： | 3.3V，5V |
| 电压 - 隔离： | 5000Vrms |
| 数据速率： | 1Mbps |
| 传输延迟： | 100ns |
| 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-IC |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 105°C |
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ADuM6200/ADuM6201/ADuM6202
APPLICATIONS INFORMATION
The dc-to-dc converter section of the ADuM620x 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
Data Sheet
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 pins are connected together close to the package.
rectified and regulated to either 3.3 V or 5 V. The secondary
(V ISO ) side controller regulates 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 ADuM620x implements undervoltage lockout (UVLO)
BYPASS < 2mm
V DD1
GND 1
V IA /V OA
V IB /V OB
RC IN
RC SEL
V E1 /NC
V ISO
GND ISO
V OA /V IA
V OB /V IB
NC
V SEL
V E2 /NC
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.
The ADuM620x can accept an external regulation control
signal (RC IN ) that can be connected to other iso Power devices.
This feature allows a single regulator to control multiple power
modules without contention. When accepting control from a
master power module, the V ISO pins can be connected together,
adding their power. Because there is only one feedback control
path, the supplies work together seamlessly. The ADuM620x
can only regulate itself or accept regulation (slave device) from
another device in this product line; it cannot provide a
regulation signal to other devices.
PCB LAYOUT
The ADuM620x digital isolators with 0.4 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 23). 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 ADuM620x 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 induc-
tance, high frequency capacitor, whereas ripple suppression and
proper regulation require a large value capacitor. These capacitors
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.
GND 1 GND ISO
Figure 23. 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 ADuM620x is a power device that dissipates 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 device primarily depends on heat dissipation into the PCB
through the GND pins. If the device is used at high ambient
temperatures, provide a thermal path from the GND pins to the
PCB ground plane. The board layout in Figure 23 shows enlarged
pads for Pin 8 (GND 1 ) and Pin 9 (GND ISO ). 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.
START-UP BEHAVIOR
The ADuM620x devices do not contain a soft start circuit.
Therefore, the start-up current and voltage behavior must be
taken into account when designing with this device.
When power is applied to V DD1 , the input switching circuit begins
to operate and draw current when the UVLO minimum voltage
is reached. The switching circuit drives the maximum available
power to the output until it reaches the regulation voltage where
PWM control begins. The amount of current and the time
required to reach regulation voltage depends on the load and
the V DD1 slew rate.
With a fast V DD1 slew rate (200 μs or less), the peak current draws
up to 100 mA/V of V DD1 . The input voltage goes high faster than
the output can turn on, so the peak current is proportional to
the maximum input voltage.
Rev. C | Page 18 of 28
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相关代理商/技术参数 |
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| ADUM6201ARIZ-RL | 功能描述:IC ISOLATOR DGTL 2CH 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 |
| ADUM6201ARWZ | 功能描述:ISOLAT DGTL 5KVRMS 2CH 16SOIC-W 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 |
| ADUM6201ARWZ | 制造商:Analog Devices 功能描述:DIGITAL ISOLATOR, 2CH, 55NS, WSOIC-16 |
| ADUM6201ARWZ-RL | 功能描述:隔离器接口集成电路 5kV 2-Ch Isolator w/ Int DC/DC Converter RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube |
| ADUM6201CRIZ | 功能描述:ISOLATED DC-DC CONV 2CH 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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