Overview
The IR1155STRPBF is a power factor correction (PFC) integrated circuit (IC) developed by Infineon Technologies, formerly known as International Rectifier. This IC is designed to operate in continuous conduction mode boost PFC converters and utilizes IR's proprietary 'One Cycle Control' (OCC) technique. This technology ensures high power factor (PF), low total harmonic distortion (THD), and excellent DC bus regulation. The IR1155STRPBF is particularly useful for reducing component count, PCB area, and design time compared to traditional PFC solutions.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units | Remarks |
|---|---|---|---|---|---|
| Switching Frequency | 48 kHz | - | 200 kHz | - | Programmable by capacitor between FREQ & COM pins |
| Input Line Voltage Range | 85 VAC | - | 264 VAC | - | - |
| Peak Gate Drive Current | - | - | 1.5 A | - | - |
| VCC Undervoltage Lockout Voltage | - | - | 106.5% VREF | - | - |
| Sleep Mode Current | 125 µA | - | 200 µA | - | - |
| Startup Current | - | 175 µA | - | - | VCC=VCC ON - 0.1V |
Key Features
- PFC IC with IR proprietary 'One Cycle Control' (OCC) technique for high PF and low THD
- Continuous conduction mode boost type PFC
- Programmable switching frequency (48 kHz to 200 kHz)
- Average current mode control
- Output overvoltage protection (OVP)
- Open loop protection
- Cycle by cycle peak current limit
- VCC under voltage lockout (UVLO)
- Programmable soft start
- Micropower startup and sleep mode with IC current consumption less than 200 µA
- User-initiated micropower 'Sleep Mode'
- OVP/EN pin internal filtering for higher noise immunity
- Latch immunity and ESD protection
Applications
The IR1155STRPBF is suitable for various AC-DC power conversion applications that require high power factor and low total harmonic distortion. These include:
- Power supplies for consumer electronics and industrial equipment
- LED lighting systems
- Motor drives and control systems
- Renewable energy systems, such as solar and wind power inverters
Q & A
- What is the IR1155STRPBF used for?
The IR1155STRPBF is used for power factor correction in continuous conduction mode boost PFC converters. - What is the switching frequency range of the IR1155STRPBF?
The switching frequency can be programmed between 48 kHz and 200 kHz. - What is the input line voltage range for the IR1155STRPBF?
The input line voltage range is from 85 VAC to 264 VAC. - Does the IR1155STRPBF have overvoltage protection?
Yes, it has output overvoltage protection (OVP) and open loop protection. - How does the IR1155STRPBF achieve high power factor and low THD?
It uses IR's proprietary 'One Cycle Control' (OCC) technique. - What is the peak gate drive current of the IR1155STRPBF?
The peak gate drive current is 1.5 A. - Does the IR1155STRPBF have a sleep mode?
Yes, it has a user-initiated micropower 'Sleep Mode' with current consumption less than 200 µA. - What is the purpose of the VCC undervoltage lockout in the IR1155STRPBF?
The VCC undervoltage lockout prevents the IC from operating below a certain VCC voltage level, ensuring stable operation. - Is the IR1155STRPBF still in production?
No, the IR1155STRPBF is obsolete and no longer manufactured. - What are some common applications of the IR1155STRPBF?
Common applications include power supplies, LED lighting systems, motor drives, and renewable energy systems.
