Overview
The ADP1074ACCZ-RL, produced by Analog Devices Inc., is a current mode, fixed frequency, active clamp, synchronous forward controller. It is specifically designed for isolated DC to DC power supplies. This controller integrates Analog Devices' proprietary iCouplers to eliminate the need for bulky signal transformers and optocouplers, thereby reducing system design complexity, cost, and component count while improving overall system reliability. The ADP1074 offers a compact system-level design and achieves higher efficiency compared to non-synchronous forward converters, especially at heavy loads.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VIN | 4.7 µF capacitor from VIN to PGND1, 1 µF capacitor from VREG1 to PGND1 | 4.7 | 24 | 60 | V |
| Quiescent Supply Current | IVIN | VIN > VIN UVLO, NGATE and PGATE unloaded at 100 kHz | 5.3 mA | |||
| VIN > VIN UVLO, NGATE and PGATE unloaded at 300 kHz | 5.8 mA | |||||
| VIN > VIN UVLO, NGATE and PGATE unloaded at 600 kHz | 6.8 mA | |||||
| Switching Frequency | fS | 50 kHz | 600 kHz | |||
| Operating Temperature | TJ | -40°C | 125°C | |||
| Dielectric Isolation Voltage | LGA package | 3.0 kV | ||||
| Wide body SOIC package | 5 kV |
Key Features
- Current mode controller for active clamp forward topology
- Integrated 3.0 kV (LGA package) or 5 kV (wide body SOIC package) rated dielectric isolation voltage with Analog Devices' iCouplers
- Compact system-level design with integrated MOSFET drivers on both primary and secondary sides
- Programmable switching frequency, maximum duty cycle, external frequency synchronization, and slope compensation
- Differential output voltage sensing, overvoltage protection, power good, tracking, and programmable light load mode setting on the secondary side
- Input current protection, undervoltage lockout (UVLO), precision enable with adjustable hysteresis, overtemperature protection (OTP), and power saving light load mode (LLM)
Applications
- Isolated DC to DC power conversion
- Intermediate bus voltage generation
- Telecom and industrial applications
- Base station and antenna RF power
- Small cell and PoE powered devices
- Enterprise switches/routers and core/edge/metro/optical routing
- Power modules
Q & A
- What is the ADP1074ACCZ-RL used for?
The ADP1074ACCZ-RL is used for isolated DC to DC power supplies, particularly in applications requiring high efficiency and compact design.
- What is the switching frequency range of the ADP1074?
The switching frequency range of the ADP1074 is from 50 kHz to 600 kHz.
- What type of isolation does the ADP1074 provide?
The ADP1074 provides dielectric isolation with ratings of up to 3.0 kV for LGA packages and up to 5 kV for wide body SOIC packages.
- What are the key features of the ADP1074's protection mechanisms?
The ADP1074 includes input current protection, undervoltage lockout (UVLO), overtemperature protection (OTP), and power saving light load mode (LLM).
- What are the typical applications of the ADP1074?
The ADP1074 is typically used in telecom, industrial, base station and antenna RF power, small cell, PoE powered devices, and enterprise switches/routers.
- How does the ADP1074 improve system reliability?
The ADP1074 improves system reliability by integrating iCouplers, which eliminate the need for bulky signal transformers and optocouplers, reducing system design complexity and component count.
- What is the operating temperature range of the ADP1074?
The operating temperature range of the ADP1074 is from -40°C to 125°C.
- What type of package is the ADP1074ACCZ-RL available in?
The ADP1074ACCZ-RL is available in an LGA-24 package.
- Does the ADP1074 support external frequency synchronization?
Yes, the ADP1074 supports external frequency synchronization.
- What is the supply voltage range for the ADP1074?
The supply voltage range for the ADP1074 is from 4.7 V to 60 V.
