Overview
The NCV887103D1R2G is an automotive-grade, non-synchronous boost controller IC produced by onsemi. This device is designed to drive an external N-channel MOSFET and features peak current mode control with internal slope compensation. It is part of the NCV8871 family, which is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other applications requiring high reliability.
The IC includes a range of protection features such as internally-set soft-start, undervoltage lockout, cycle-by-cycle current limiting, hiccup-mode short-circuit protection, and thermal shutdown. It also offers low quiescent current in sleep mode and externally synchronizable switching frequency, enhancing its efficiency and versatility.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Dc Supply Voltage (VIN) | VIN | -0.3 | - | 40 | V |
| Peak Transient Voltage (Load Dump on VIN) | - | - | - | 45 | V |
| Switching Frequency | fs | 306 | 340 | 374 | kHz |
| Maximum Duty Cycle | Dmax | 91 | 93 | 95 | % |
| Soft-Start Time | tss | 3.0 | 3.7 | 4.4 | ms |
| Current Limit Trip Voltage | Vcl | 180 | 200 | 220 | mV |
| Gate Drive Sourcing Current | Isrc | 575 | 600 | 800 | mA |
| Gate Drive Sinking Current | Isink | 250 | 350 | 500 | mA |
| Drive Voltage | VDRV | 8.0 | 8.4 | 8.8 | V |
| Operating Junction Temperature | TJ | -40 | - | 150 | °C |
Key Features
- Peak Current Mode Control with Internal Slope Compensation: Ensures stable and efficient operation by directly controlling the power switch current.
- Fixed Frequency Operation: Maintains a constant switching frequency, which is externally synchronizable.
- Wide Input Voltage Range: Supports input voltages from 3.2 V to 40 Vdc, with a peak transient voltage of 45 V.
- Protection Features: Includes undervoltage lockout, cycle-by-cycle current limiting, hiccup-mode short-circuit protection, and thermal shutdown.
- Low Quiescent Current in Sleep Mode: Reduces power consumption during idle states.
- Internal Soft-Start: Prevents inrush current and ensures smooth startup.
- AEC-Q100 Qualified and PPAP Capable: Meets stringent automotive reliability standards.
Applications
- Automotive Systems: Suitable for various automotive applications due to its AEC-Q100 qualification and robust protection features.
- Industrial Power Supplies: Can be used in industrial power supplies requiring high reliability and efficiency.
- Consumer Electronics: Applicable in consumer electronics that need stable and efficient power conversion.
- Railway and Aerospace: Meets the reliability and performance requirements of railway and aerospace applications.
Q & A
- What is the input voltage range of the NCV887103D1R2G?
The input voltage range is from 3.2 V to 40 Vdc, with a peak transient voltage of 45 V.
- What is the switching frequency of the NCV887103D1R2G?
The switching frequency is typically 340 kHz, with a range of 306 kHz to 374 kHz.
- What protection features does the NCV887103D1R2G have?
The device includes undervoltage lockout, cycle-by-cycle current limiting, hiccup-mode short-circuit protection, and thermal shutdown.
- Is the NCV887103D1R2G suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other high-reliability applications.
- How does the soft-start feature work in the NCV887103D1R2G?
The soft-start feature prevents inrush current by gradually increasing the output voltage during startup, ensuring a smooth and controlled start-up process.
- What is the maximum duty cycle of the NCV887103D1R2G?
The maximum duty cycle is typically 93%, with a range of 91% to 95%.
- Can the switching frequency of the NCV887103D1R2G be synchronized externally?
Yes, the switching frequency can be externally synchronized.
- What is the quiescent current in sleep mode for the NCV887103D1R2G?
The quiescent current in sleep mode is typically 2.0 μA.
- How does the hiccup-mode short-circuit protection work in the NCV887103D1R2G?
The hiccup-mode short-circuit protection reduces the switching frequency during a short-circuit event to prevent overheating and damage to the device.
- What is the operating junction temperature range of the NCV887103D1R2G?
The operating junction temperature range is from -40°C to 150°C.
