Overview
The NCP1615CDR2G is a high voltage Power Factor Correction (PFC) controller designed by onsemi. It utilizes an innovative Current Controlled Frequency Foldback (CCFF) method to drive PFC boost stages. This controller operates in critical conduction mode (CrM) when the inductor current exceeds a programmable value and linearly decays the frequency down to a minimum of about 26 kHz at the sinusoidal zero-crossing, thereby maximizing efficiency at both nominal and light loads. The integrated high voltage start-up circuit eliminates the need for external start-up components and minimizes standby losses. The NCP1615CDR2G is housed in a SOIC-16 package and is Pb and Halogen free, making it suitable for robust and compact PFC stages with few external components.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Start-Up Threshold (VCC increasing) | 16.0 | 17.0 | 18.0 | V |
| Minimum Operating Voltage (VCC decreasing) | 8.5 | 9.0 | - | V |
| VCC Range | 9.5 | - | 30 | V |
| High Line Threshold | 236 | - | 250 | Vdc |
| Drive Capability | -500 mA | - | +800 mA | mA |
| No-Load Power Consumption (PSM) | - | - | < 30 mW | mW |
| Package Type | - | - | SOIC-16 NB (Pb-Free) | - |
Key Features
- High Voltage Start-Up Circuit with Integrated Brownout Detection
- Input to Force Controller into Standby Mode
- Restart Pin Allows Adjustment of Bulk Voltage Hysteresis in Standby Mode
- Skip Mode Near the Line Zero Crossing
- Fast Line / Load Transient Compensation
- Valley Switching for Improved Efficiency
- High Drive Capability: -500 mA/+800 mA
- Wide VCC Range: from 9.5 V to 30 V
- Input Voltage Range Detection
- Line Removal Detection Circuitry
- Power Saving Mode (PSM) Enables < 30 mW No-load Power Consumption
- Pb and Halogen Free Device
- Adjustable Bulk Undervoltage Detection (BUV)
- Soft Overvoltage Protection
- Overcurrent Protection
- Internal Thermal Shutdown
- Bi-Level Latch Input for OVP and OTP
- Bypass/Boost Diode Short Circuit Protection
- Open Ground Pin Protection
Applications
- PC Power Supplies
- Off-Line Appliances Requiring Power Factor Correction
- LED Drivers
- Flat TVs / LED-TV / LCD-TV / Plasma
- High Powered Adapters
- All-In-One Computers
- Lighting Ballast
Q & A
- What is the NCP1615CDR2G used for?
The NCP1615CDR2G is used as a high voltage Power Factor Correction (PFC) controller to drive PFC boost stages.
- What is the CCFF method in the NCP1615CDR2G?
The CCFF (Current Controlled Frequency Foldback) method allows the controller to operate in critical conduction mode and linearly decay the frequency to minimize standby losses and maximize efficiency.
- What is the package type of the NCP1615CDR2G?
The NCP1615CDR2G is housed in a SOIC-16 NB (Pb-Free) package.
- What are the key safety features of the NCP1615CDR2G?
The key safety features include Adjustable Bulk Undervoltage Detection (BUV), Soft Overvoltage Protection, Overcurrent Protection, Internal Thermal Shutdown, and Bi-Level Latch Input for OVP and OTP.
- What is the drive capability of the NCP1615CDR2G?
The drive capability is -500 mA/+800 mA.
- What is the VCC range for the NCP1615CDR2G?
The VCC range is from 9.5 V to 30 V.
- Does the NCP1615CDR2G support power saving mode?
Yes, it supports a Power Saving Mode (PSM) that enables < 30 mW no-load power consumption.
- What are some typical applications of the NCP1615CDR2G?
Typical applications include PC power supplies, off-line appliances requiring power factor correction, LED drivers, and flat TVs.
- Is the NCP1615CDR2G Pb and Halogen free?
Yes, the NCP1615CDR2G is a Pb and Halogen free device.
- How does the NCP1615CDR2G handle high line and low line mode selection?
The NCP1615CDR2G has line mode selector timers for high to low and low to high line transitions, ensuring proper operation across different line conditions.
