ADP1071-1ARWZ-RL

The ADP1071-1/ADP1071-2 is a PWM current mode fixed frequency synchronous flyback controller designed for isolated DC...

Product Details

The ADP1071-1/ADP1071-2 is a PWM current mode fixed frequency synchronous flyback controller designed for isolated DC-to-DC power supplies. ’s proprietary iCouplers are integrated in the ADP1071-1/ADP1071-2 to eliminate the bulky signal transformers and opto-couplers while reducing system design complexity, cost and component count, and improving overall system reliability. With the integrated isolators and drivers on both the primary and secondary, the ADP1071-1/ADP1071-2 offers a compact system level design and yields a higher efficiency than a diode rectified flyback converter at heavy loads.

Output regulation is achieved by sensing the output voltage on the secondary side, where the feedback and the PWM signals are transmitted between the primary and secondary through the iCouplers.

The ADP1071-1/ADP1071-2 is offered in the 16L SOIC_W with an isolation voltage rating of 5 kVRMS. The ADP1071-2 is designed for isolated DC-DC applications for low input voltage applications, and the ADP1071-1 targets high input voltage applications, where the DC input voltage can exceed 60V.

The ADP1071-1/ADP1071-2 offers features such as input current protection, output over-voltage protection OVP, under voltage lockout UVLO, precision enable with adjustable hysteresis, over temperature protection OTP and light-load power saving mode LLM.

APPLICATIONS:

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Isolated DC/DC or AC/DC Power conversion

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Telecom, Industrial

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Small Cell

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PoE Powered Device

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Enterprise switches/routers

### Features and Benefits

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Current Mode Controller for flyback topology

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ADP1071-1: Programmable LLM or CCM. For high VIN applications

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Programmable slope compensation

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Integrated 5 kV isolation with Analog Devices patented iCoupler technology

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Wide voltage supply range

Secondary VDD2: Upto 36 V

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Integrated 1A primary side MOSFET driver

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Integrated 1A secondary side MOSFET driver for synchronous rectification

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Integrated error amplifier and < 1% accurate reference voltage

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Programmable frequency range: 50 kHz – 600 kHz

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Duty cycle clamp limit 85%

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Programmable soft start and soft start from pre-charged load

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Protection features such as short circuit, output overvoltage, and over temperature protection

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Power saving light load mode using MODE pin ADP1071-1 only

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Cycle-by-cycle input overcurrent protection

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Precision enable UVLO with hysteresis

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Frequency synchronization

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Power Good pin for system flagging

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Available in 24-pin SOIC_W package