Overview
The NCP1605BDR2G is a high-performance power factor correction (PFC) controller from onsemi, designed to achieve near-unity power factor in various AC-DC power supply applications. This controller operates in both Discontinuous Conduction Mode (DCM) and Critical Conduction Mode (CRM), making it versatile for different design requirements. Housed in a SOIC-16 package, it integrates all necessary features for robust and compact PFC stages with minimal external components.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Range | 10 | - | 20 | V |
| Switching Frequency | - | 250 | - | kHz |
| Gate Drive Capability | -500 | - | +800 | mA |
| Operating Temperature | 0 | - | 125 | °C |
| Package Type | - | - | - | SOIC-16 |
| VCC Turn-On Threshold | 10.5 | - | 15 | V |
| Thermal Shutdown Threshold | - | - | 155 | °C |
Key Features
- Near-unity power factor in fixed frequency DCM or CRM operation
- Lossless high voltage current source for startup
- Soft skip cycle for low power standby mode
- Synchronization capability and fast line/load transient compensation
- High drive capability: -500 mA / +800 mA
- pfcOK pin to indicate PFC readiness for operation
- Follower boost operation
- Output under and overvoltage protection, brown-out detection, and overcurrent limitation
- Zero current detection and thermal shutdown with latched off capability
Applications
- PC power supplies
- All off-line appliances requiring power factor correction
Q & A
- What is the operating voltage range of the NCP1605BDR2G?
The operating voltage range is from 10 V to 20 V.
- What are the typical switching frequencies of the NCP1605BDR2G?
The switching frequency can go up to 250 kHz.
- What is the gate drive capability of the NCP1605BDR2G?
The gate drive capability is -500 mA / +800 mA.
- What are the safety features of the NCP1605BDR2G?
The device includes output under and overvoltage protection, brown-out detection, overcurrent limitation, zero current detection, and thermal shutdown with latched off capability.
- What is the package type of the NCP1605BDR2G?
The package type is SOIC-16.
- What are the typical applications of the NCP1605BDR2G?
Typical applications include PC power supplies and all off-line appliances requiring power factor correction.
- Is the NCP1605BDR2G RoHS compliant?
- What is the operating temperature range of the NCP1605BDR2G?
The operating temperature range is from 0°C to 125°C.
- Does the NCP1605BDR2G support synchronization capability?
- What is the purpose of the pfcOK pin in the NCP1605BDR2G?
The pfcOK pin indicates that the PFC is ready for operation.
