ADUM4190High Stability Isolated Error Amplifier | Amplifiers | 4 | Active | The ADuM4190 is an isolated error amplifier based on ADI,iCoupler®technology. The ADuM4190 is ideal for linear feedback power supplies. The primary side controllers of the ADuM4190 enable improvements in transient response, power density, and stability as compared to commonly used optocoupler and shunt regulator solutions.Unlike optocoupler-based solutions, which have an uncertain current transfer ratio over lifetime and at high temperatures, the ADuM4190 transfer function does not change over its lifetime and is stable over a wide temperature range of −40°C to +125°C.Included in the ADuM4190 is a wideband operational amplifier for a variety of commonly used power supply loop compensation techniques. The ADuM4190 is fast enough to allow a feedback loop to react to fast transient conditions and overcurrent conditions. Also included is a high accuracy 1.225 V reference to compare with the supply output setpoint.The ADuM4190 is packaged in a wide body, 16-lead SOIC package for a reinforced 5 kV rms isolation voltage rating.ApplicationsLinear feedback power suppliesInvertersUninterruptible power supplies (UPS)DOSA-compatible modulesVoltage monitors |
ADUM4195-1Isolated Amplifier with Fixed Gain and Single-Ended Output | Evaluation Boards | 5 | Active | The ADuM4195-1 is an isolation amplifier based on Analog Devices, Inc.,iCoupler®technology. The ADuM4195-1 has very low offset and gain error, making it ideal for many isolated voltage sensing applications.Unlike optocoupler-based solutions, which have an uncertain current transfer ratio over a lifetime and is unstable at high temperatures, the ADuM4195-1 transfer function does not change over its lifetime, and is stable over a wide temperature range of −40°C to +125°C.The ADuM4195-1 has been certified to provide galvanic isolation up to 5 kV rms according to UL1577.The ADuM4195-1 is packaged in a small 8-lead wide body SOIC package with increased creepage.APPLICATIONSInvertersDC-DC converterOn-board chargers |
ADUM4221Isolated, Half Bridge Gate Driver with Adjustable Dead Time, Single Input, 4 A Output | Development Boards, Kits, Programmers | 9 | Active | The ADuM4221/ADuM4221-1/ADuM4221-2are 4 A isolated, half bridge gate drivers that employ the Analog Devices, Inc.,iCoupler®technology to provide independent and isolated high-side and low-side outputs. The ADuM4221/ADuM4221-1/ADuM4221-2 provide 5700 V rms isolation in an increased creepage wide body, 16-lead SOIC_IC. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to the alternatives, such as the combination of pulse transformers and gate drivers.The isolators operate with a logic input voltage ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. In comparison to gate drivers employing high voltage level translation methodologies, the ADuM4221/ADuM4221-1/ADuM4221-2 offer the benefit of true, galvanic isolation between the input and each output.The ADuM4221/ADuM4221-1/ADuM4221-2 each have built in overlap protection and allow dead time adjustment. A single resistor between the dead time pin (DT) and the GND1pin sets the dead time on the secondary side between the high-side and the low-side outputs.An internal thermal shutdown (TSD) sets outputs low if the internal temperature on the ADuM4221/ADuM4221-1/ADuM4221-2 exceeds the TSD temperature. As a result, the ADuM4221/ADuM4221-1/ADuM4221-2 provide reliable control over the switching characteristics of the insulated gate bipolar transistor (IGBT)/metal-oxide semiconductor field effect transistor (MOSFET) configurations over a wide range of positive or negative switching voltages.ApplicationsSwitching power suppliesIsolated IGBT/MOSFET gate drivesIndustrial invertersGallium nitride (GaN)/silicon carbide (SiC) compatible1Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,239. Other patents pending. |
| Isolators - Gate Drivers | 12 | Active | |
| Isolators - Gate Drivers | 6 | Active | |
| Isolators | 16 | Active | |
| Isolators | 16 | Active | |
| Digital Isolators | 15 | Active | |
ADUM4470Isolated Switch Regulator with Quad-Channel Isolators (4/0 Channel Directionality) | Digital Isolators | 4 | Active | The ADuM4470 /ADuM4471/ADuM4472/ADuM4473/ADuM4474are quad-channel, digital isolations with a regulated DC/DC isolated power supply controller with an internal MOSFET driver. The DC/DC controller has an internal isolated PWM feedback from the secondary side based on theiCoupler®chip scale transformer technology and complete loop compensation. This eliminates the need to use an optocoupler for feedback and compensates the loop for stability.The ADuM447x isolator provides a more stable output voltage and higher efficiency compared to unregulated isolated DC/DC jpower supplies. The fully integrated feedback and loop compensation in a wide-body SOIC package provide a smaller form factor and 8.3 mm creepage distance solution. The regulated feedback provides a relatively flat efficiency curve over the full output power range. The ADuM3070 enables a DC/DC converter with a 3.3 V to 24 V isolated output voltage range from either a 5.0 V or a 3.3 V input voltage, with an output power of up to 2.5 W.The ADuM447x isolators provide four independent isolation channels in a variety of channel configurations and data rates. (The x in ADuM447x throughout this data sheet stands for the ADuM4470 / ADuM4471 / ADuM4472 / ADuM4473 / ADuM4474).APPLICATIONSPower supply startup bias and gate drivesIsolated sensor interfacesProcess controlsRS-232/RS-422/RS-485 transceivers |
ADUM4471Isolated Switch Regulator with Quad-Channel Isolators (3/1 Channel Directionality) | Isolators | 4 | Active | TheADuM4470/ ADuM4471 /ADuM4472/ADuM4473/ADuM4474are quad-channel, digital isolations with a regulated DC/DC isolated power supply controller with an internal MOSFET driver. The DC/DC controller has an internal isolated PWM feedback from the secondary side based on theiCoupler®chip scale transformer technology and complete loop compensation. This eliminates the need to use an optocoupler for feedback and compensates the loop for stability.The ADuM447x isolator provides a more stable output voltage and higher efficiency compared to unregulated isolated dc-to-dc power supplies. The fully integrated feedback and loop compensation in a wide-body SOIC package provide a smaller form factor and 8.3 mm creepage distance solution.The regulated feedback provides a relatively flat efficiency curve over the full output power range. The ADuM3070 enables a DC/DC converter with a 3.3 V to 24 V isolated output voltage range from either a 5.0 V or a 3.3 V input voltage, with an output power of up to 2.5 W.The ADuM447x isolators provide four independent isolation channels in a variety of channel configurations and data rates. (The x in ADuM447x throughout this data sheet stands for the ADuM4470 / ADuM4471 / ADuM4472 / ADuM4473 / ADuM4474).APPLICATIONSPower supply startup bias and gate drivesIsolated sensor interfacesProcess controlsRS-232/RS-422/RS-485 transceivers |
