ADUM6000ARWZ-RL Switching Voltage Regulators

Technical Specifications of ADUM6000ARWZ-RL

Datasheet	ADUM6000ARWZ-RL datasheet
Category	Power Supplies – Board Mount
Family	DC DC Converters
Manufacturer	Analog Devices Inc.
Series	IsoPower?, iCoupler?
Packaging	Tape & Reel (TR)
Part Status	Active
Type	Isolated Module
Number of Outputs	1
Voltage – Input (Min)	3V
Voltage – Input (Max)	5.5V
Voltage – Output 1	3.3V, 5V
Voltage – Output 2	–
Voltage – Output 3	–
Current – Output (Max)	80mA
Power (Watts) – Manufacture Series	–
Voltage – Isolation	5kV (5000V)
Applications	ITE (Commercial)
Features	OCP, OTP, UVLO
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.295″, 7.50mm Width)
Size / Dimension	0.41″ L x 0.29″ W x 0.10″ H (10.4mm x 7.3mm x 2.5mm)
Operating Temperature	-40°C ~ 105°C
Efficiency	31%
Power (Watts) – Max	400mW

ADUM6000ARWZ-RL General Description

The ADuM60001 uses the iCoupler® technology developed by Analog Devices, Inc. to function as an isolated dc-to-dc converter. This dc-to-dc converter is up to 31% efficient because of the iCoupler technology developed by Analog Devices for chip-scale transformers.

The end product is a compact, foolproof method of isolation. Connecting the ADuM6000 to an ADuM5401, ADuM5404, ADuM5403, ADuM5402, ADuM520x, or ADuM620x iCoupler, the output power of those devices can be increased to achieve higher output power levels using isoPower®. High-frequency switching components are used when transmitting electricity through the isoPower transformer.

ADUM6000ARWZ-RL Features

• Output at regulated 5 V or 3.3 V.
• 400 mW or more in output power.
• More than 7.6 mm creepage in a 16-lead SOIC package.
• Operation at high temperatures: 105°C maximum.
• >25 kV/s: high common-mode transient immunity.
• Protection from thermal overload.
• Regulatory and safety approvals UL approval is still pending. UL 1577 specifies 5000 V RMS for a minute.
• 125 V rms., CSA Component Acceptance Notice #5A, IEC 60601-1.

Applications Information

The ADuM6000’s dc-to-dc converter operates using the same principles as standard switching power supplies. It uses pulse-width modulation (PWM) feedback isolation and a controller architecture on the secondary side. An oscillating circuit receives VDD1 power and switches current into a chip-scale air-core transformer. The power voltage sent to the secondary is regulated and rectified before being sent there. The output is controlled by a PWM control signal generated by the secondary (VISO) side controller and transmitted to the primary (VDD1) side through a separate iCoupler data channel. The PWM controls the oscillator circuit when managing the energy delivered to the secondary side. Power and efficiency can be greatly increased with the use of feedback.

To interface with other isoPower devices, the ADuM6000 features a regulation control output (RCOUT) signal. In this way, a single regulator can independently regulate many power modules. The VISO pins can be chained together to function as a single supply when supplementary power modules are present. All the supplies mesh together without a hitch because there is only one feedback control path. In master mode, the ADuM6000 takes on the role of regulator, while in slave mode, it is at the command of another isoPower device.

The ADuM6000’s VDD1 input protection circuitry includes hysteresis-based under-voltage lockout (UVLO). To begin functioning, the dc-to-dc converter waits for the input voltage to surpass the UVLO threshold. To switch off the converter, the input voltage must be reduced by the hysteresis value below the turn-on threshold. This function aids the converter’s power-on procedure in numerous ways. So, for instance, UVLO makes sure the system supply is at least as high as the ADuM6000’s requirements before it starts drawing power. Further, it keeps the supply from going dead and creating oscillation should the voltage drop because of the converter current.

PCB Layout

The ADuM6000’s dc-to-dc converter operates using the same principles as standard switching power supplies. It uses pulse-width modulation (PWM) feedback isolation and a controller architecture on the secondary side. Using VDD1 power, an oscillating circuit switches current into a miniature air-core transformer on a chip. The power voltage sent to the secondary is regulated and rectified before being sent there. The output is controlled by a PWM control signal generated by the secondary (VISO) side controller and transmitted to the primary (VDD1) side through a separate iCoupler data channel. The PWM controls the oscillator circuit when managing the energy delivered to the secondary side. Power and efficiency can be greatly increased with the use of feedback.

To interface with other isoPower devices, the ADuM6000 features a regulation control output (RCOUT) signal. In this way, a single regulator can independently regulate many power modules. The VISO pins can be chained together to function as a single supply when supplementary power modules are present. All the supplies mesh together without a hitch because there is only one feedback control path.

The ADuM6000’s VDD1 input protection circuitry includes hysteresis-based under-voltage lockout (UVLO). To begin functioning, the dc-to-dc converter waits for the input voltage to surpass the UVLO threshold. To switch off the converter, the input voltage must be reduced by the hysteresis value below the turn-on threshold. This function aids the converter’s power-on procedure in numerous ways. So, for instance, UVLO makes sure the system supply is at least as high as the ADuM6000’s requirements before it starts drawing power. Further, it keeps the supply from going dead and creating oscillation should the voltage drop because of the converter current.

Start-Up Behavior

Unfortunately, a soft start circuit is not included in the ADuM6000 gadget. As a result, designers working with this device need to account for its start-up current and voltage characteristics. When the UVLO threshold voltage is reached, the input switching circuit draws current from VDD1. The output receives the full power rating from the switching circuit until it reaches the regulation voltage, at which point PWM control is activated. The load and the VDD1 slew rate determine the quantity of current and the time needed to attain regulation voltage.

EMI Considerations

For the ADuM6000’s dc-to-dc converter portion to transfer power efficiently through the tiny transformers, it must run at 180 MHz. As a result, edge emissions and dipole radiation between the primary and secondary ground planes are generated due to the propagation of high-frequency currents in the power planes and ground of the circuit board. Applications using these devices should consider installing them in grounded enclosures. When using grounded enclosures is not an option, proper RF design techniques should be applied to the PCB layout.

Thermal Analysis

The ADuM6000 has two die-attached paddles and a split lead frame with four silicon dies inside. The highest junction temperature is used to determine the JA value in Table 5, which is then used for thermal analysis.

The JA value is derived from measurements made with the component soldered to a 4-layer JEDEC-compliant board with fine-width traces and ambient air at room temperature. When used under typical settings, the ADuM6000 does not reduce its output current over its working temperature range. Nonetheless, the thermal margin can be enhanced at high ambient temperatures by adhering to the guidelines in the PCB Layout section, which reduce thermal resistance to the PCB.

Conclusion

Analog Devices’ ADUM6000ARWZ-RL DC-to-DC converter adjusts device voltage. This converter’s single output generates 0.08 A. This will power your circuit with a 3- to 5.5 V input voltage. Power management is ideal with a set output voltage of 5|3.3 V and maximum output power of 0.4 W. Programmable DC power supplies require 5% load regulation and 1mV/V(Typ) line regulation. This part requires a 180000(Typ) kHz switching frequency to function. Tape and reel packaging protects the goods during shipping and makes component attachment easy. The converter works best at 5000 V and isolated isolation. This converter operates between -40 and 105 °C.

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