ADUM1234: Isolated, Precision Half-Bridge Driver, 0.1 A Output
The ADuM1234* is an isolated, half-bridge gate driver that employs the Analog Devices, Inc. iCoupler® technology to provide independent and isolated high-side and low-side ...More
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ADUM1234: Isolated, Precision Half-Bridge Driver, 0.1 A Output
Product Description
The ADuM1234* is an isolated, half-bridge gate driver that employs the Analog Devices, Inc. iCoupler® technology to provide independent and isolated high-side and low-side outputs. Combining high speed CMOS and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to optocoupler-based solutions.
By avoiding the use of LEDs and photodiodes, this iCoupler gate drive device is able to provide precision timing characteristics not possible with optocouplers. Furthermore, the reliability and performance stability problems associated with optocoupler LEDs are avoided.
In comparison to gate drivers employing high voltage level translation methodologies, the ADuM1234 offers the benefit of true, galvanic isolation between the input and each output. Each output can be operated up to ±700 VPEAK relative to the input, thereby supporting low-side switching to negative voltages. The differential voltage between the high side and low side can be as high as 700 VPEAK.
As a result, the ADuM1234 provides reliable control over the switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages.
*Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329. Other patents pending.
Applications
- Isolated IGBT/MOSFET gate drives
- Plasma displays
- Industrial inverters
- Switching power supplies
Features
- Isolated high-side and low-side outputs
- 0.1 A peak output current
- CMOS input threshold levels
- High frequency operation: 5 MHz maximum
- High common-mode transient immunity: >75 kV/µs
- High temperature operation: 105°C
- Wide body, RoHS compliant, 16-lead SOIC
- UL1577 2500 V rms input-to-output withstand voltage
Diagrams
- Enlarge
- Другие диаграммы
- Обозначения и трафареты для печатной платы
Functional Block Diagram for ADUM1234
Isolated, Precision Half-Bridge Driver, 0.1 A Output
Другие диаграммы для ADUM1234
Isolated, Precision Half-Bridge Driver, 0.1 A Output
ADUM1234 Pin Configuration
Functional Block Diagram for ADUM1234
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| Part# | Features | # Ch | Max Data Rate(Mbps) | Resolution (Bits) | Insulation Rating (kVrms) | Isolation Voltage (Vrms) | Max Operating Temp (°C) | Pulse Width Distort (ns) | Max Prop Delay (ns) | Pos Supply | Min Output Voltage (V) | Max Output Voltage (V) | Output Default State | Serial Clock | Package | Output Power (mW) | iCouplerType | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AD7400 | Isolated Sigma-Delta Modulator | - | 10 | 16 | - | - | - | - | - | +4.5V to +5.5V | - | - | - | - | 16-Lead SOIC | - | - | $4.05 |
| AD7401 | Isolated Sigma-Delta Modulator | - | 10 | 16 | - | - | - | - | - | +4.5V to +5.5V | - | - | - | - | 16-Lead SOIC | - | - | $4.05 |
| ADM2483 | RS-485 Transceiver/Half Duplex | 1 | 0.5 | - | 2.5 | - | 85 | - | - | +2.7V to +5.5V | 1.5 | 5 | Z | - | 16-Lead SOIC | - | - | $3.04 |
| ADM2485 | RS-485 Transeiver | 1 | 16 | - | 2.5 | - | 85 | - | - | +2.7V to +5.5V | 2.1 | 5 | Z | - | 16-Lead SOIC | - | - | $5.57 |
| ADM2486 | RS-485 Transceiver/Half Duplex w/ Transformer Driver | 1 | 20 | - | 2.5 | - | 85 | - | - | +2.7V to +5.5V | - | - | Z | - | 16-Lead SOIC | - | - | $5.04 |
| ADM2490E | RS-485 Transceiver/Full Duplex | 1 | 16 | - | 5 | - | 105 | - | - | +2.7V to +5.5V | - | - | High | - | 16-Lead SOIC | - | - | $4.55 |
| ADUM1100 | Standard Digital Isolator | 1 | 100 | - | 2.5 | 2.5 | 125 | 2 | 18 | +3V to +5.5V | 3 | 5.5 | High | - | 8-Lead SOIC | - | Standard | $1.63 |
| ADUM1200 | Standard Digital Isolator | 2 | 25 |