Overview
The ADM1041A, produced by Analog Devices Inc., is a secondary-side controller designed for use in power supply systems. This integrated circuit (IC) is specifically engineered to minimize the need for external components and eliminate manual calibration on the secondary side. It combines digital and analog circuitry, manufactured using a 5 V CMOS process, and includes an internal EEPROM for flexibility in trimming timing and voltage settings. The ADM1041A supports various control and monitoring functions, making it a versatile component for power supply management.
Key Specifications
| Parameter | Description |
|---|---|
| Operating Temperature | -40°C to +85°C |
| Package Type | 24-Lead QSOP (RQ-24) |
| Supply Voltage | 5 V |
| Communication Interface | SMBus serial port |
| Calibration Method | Digital calibration via internal EEPROM |
| Fault Detection | Comprehensive fault detection including overcurrent, overvoltage, and temperature monitoring |
| Current Sharing | Supports current sharing and current-limit adjustment |
Key Features
- Digital calibration via internal EEPROM for trimming timing and voltage settings.
- Supports SSI (Serial Service Interface) specification.
- Comprehensive fault detection including overcurrent, overvoltage, and temperature monitoring.
- Reduced component count on the secondary side.
- Standalone or microcontroller control capability.
- Generates error signal for primary-side PWM.
- Output voltage adjustment and margining.
- Current sharing and current-limit adjustment.
- OrFET control for higher efficiency and power density.
- Temperature monitoring via thermistor input.
Applications
The ADM1041A is primarily used in power supply systems, particularly in server power supplies and other high-reliability applications. It is suitable for:
- N+1 server power supplies where redundancy is critical.
- High-efficiency power supply designs requiring OrFET control.
- Systems needing precise output voltage adjustment and margining.
- Applications requiring comprehensive fault detection and protection.
- Power supplies that benefit from reduced external component counts and automated calibration.
Q & A
- What is the primary function of the ADM1041A?
The ADM1041A is a secondary-side controller designed to manage and control power supply output, including voltage adjustment, current sharing, and fault detection.
- What is the operating temperature range of the ADM1041A?
The operating temperature range is -40°C to +85°C.
- What type of package does the ADM1041A come in?
The ADM1041A comes in a 24-Lead QSOP (RQ-24) package.
- How does the ADM1041A support calibration?
The ADM1041A supports digital calibration via an internal EEPROM.
- What communication interface does the ADM1041A use?
The ADM1041A uses an SMBus serial port for communication.
- What are some key features of the ADM1041A?
Key features include comprehensive fault detection, current sharing, OrFET control, and temperature monitoring.
- Is the ADM1041A still in production?
No, the ADM1041AARQZ is obsolete and no longer manufactured.
- How does the ADM1041A handle fault conditions?
The ADM1041A can detect various fault conditions, including overcurrent and overvoltage, and can shut down the power supply via the OrFET to prevent damage.
- Can the ADM1041A be controlled by a microcontroller?
- What is the purpose of the OrFET in the ADM1041A?
The OrFET in the ADM1041A is used to disconnect the power supply from the load in the event of a fault, reducing power dissipation and preventing interruptions on the power supply bus.
