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MP44018A CrM/DCM Multi-Mode PFC Controller SOIC
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MP44018A CrM/DCM Multi-Mode PFC Controller SOIC
The MPS MP44018A is a CrM/DCM Multi-Mode PFC Controller. It is supplied in a SOIC package.
The MP44018A is a CrM/DCM multi-mode PFC controller that provides simple and high- performance active power factor correction using minimal external components.
Key Specifications
| Part Number | MP44018A |
| Function | CrM/DCM Multi-Mode PFC Controller |
| Package | SOIC |
| Ordering Codes | MP44018A |
Features
- Valley Turn-On for Minimum Switching Loss
- Frequency Reduction to Reduce Switching Loss Under Light-Load Conditions
- Low Supply Current in Burst Mode
- Soft-On/Off Burst for Low Audible Noise
- Mains Compensation
- Improved THD
- Under-Voltage Protection (UVP)
- Over-Current Limit (OCL)
- Over-Current Protection (OCP)
- Over-Voltage Protection (OVP)
Typical Application Circuit
Applications
- LCD and OLED TVs
- Desktop PCs and Servers
- High-Power Supply for Lighting
- AC/DC Adapters, Open-Frame SMPS
Design Notes
- The PFC inductor must support the maximum duty cycle at the lowest line voltage, which is where saturation risk peaks.
- High-voltage startup and X-capacitor discharge paths dominate no-load standby loss; verify them against the efficiency target.
- Leakage inductance and the RCD clamp set the turn-off loss — snubber values are a thermal trade-off, not a fixed recipe.
- Synchronous rectification timing must track the primary switching; a mistimed SR FET conducts through its body diode and fails hot.
Common Questions
Which package and ordering codes apply to the MP44018A?
SOIC; order codes include MP44018A.
What are the defining features of the MP44018A?
Valley Turn-On for Minimum Switching Loss Frequency Reduction to Reduce Switching Loss Under Light-Load Conditions
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