Overview
The NCP1072STBT3G is a high-voltage switcher integrated circuit (IC) from onsemi, designed for low-power offline Switch-Mode Power Supplies (SMPS). This IC integrates a fixed frequency current mode controller with a 700 V MOSFET, offering a high level of integration and various protection features. It is available in a SOT-223 package, making it suitable for compact and efficient power supply designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Drain Voltage (BVdss) | 700 | V |
| Drain Current Peak (IDS(PK)) at TJ = 25°C | 250 | mA |
| Drain Current Peak (IDS(PK)) at TJ = 150°C | 200 | mA |
| On-State Resistance (RDS(on)) | 11 | Ω |
| Oscillation Frequency | 65, 100, 130 | kHz |
| Maximum Duty Cycle | 62-68% | % |
| Soft-Start Duration | 1 | ms |
| Temperature Shutdown | 150 | °C |
| Package Type | SOT-223 |
Key Features
- Built-in 700 V MOSFET: With an on-state resistance (RDS(on)) of 11 Ω, ensuring efficient power switching.
- Current-Mode Fixed Frequency Operation: Available frequencies include 65 kHz, 100 kHz, and 130 kHz.
- Peak Current Limitation: Maximum peak current set point of 250 mA.
- Soft-Start and Frequency Foldback: Reduces standby consumption and improves efficiency at light loads.
- Dynamic Self-Supply: Eliminates the need for an auxiliary winding.
- Protection Features: Includes overvoltage protection with auto-recovery, short-circuit protection, and AC input line voltage detection.
- High Creepage Distance: Between high-voltage pins, enhancing safety and reliability.
- Low Standby Power Consumption: Below 50 mW at high line with the connection of an auxiliary winding.
Applications
- Low-Power Offline SMPS: Suitable for various low-power applications such as chargers, adapters, and small appliances.
- Consumer Electronics: Ideal for use in consumer electronics requiring efficient and compact power supply solutions.
- Industrial Power Supplies: Can be used in industrial settings where reliability and efficiency are critical.
- Automotive Systems: Applicable in automotive systems that require robust and efficient power management.
Q & A
- What is the maximum drain voltage of the NCP1072STBT3G?
The maximum drain voltage is 700 V.
- What are the available oscillation frequencies for the NCP1072STBT3G?
The available frequencies are 65 kHz, 100 kHz, and 130 kHz.
- What is the on-state resistance (RDS(on)) of the NCP1072STBT3G?
The on-state resistance is 11 Ω.
- Does the NCP1072STBT3G have built-in protection features?
- How does the NCP1072STBT3G manage standby power consumption?
The IC enters frequency foldback mode and skip mode to reduce standby consumption, and it can be further reduced below 50 mW with an auxiliary winding.
- What is the package type of the NCP1072STBT3G?
The package type is SOT-223.
- What is the maximum duty cycle of the NCP1072STBT3G?
The maximum duty cycle is between 62% and 68%.
- Does the NCP1072STBT3G support dynamic self-supply?
- What is the temperature shutdown point of the NCP1072STBT3G?
The temperature shutdown point is 150°C.
- What are some typical applications of the NCP1072STBT3G?
Typical applications include low-power offline SMPS, consumer electronics, industrial power supplies, and automotive systems.
