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HR1211 Multi-Mode PFC and Current Mode LLC Controller SOIC
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pMPS HR1211 — Multi-Mode PFC and Current Mode LLC Controller, SOIC./p
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HR1211 Multi-Mode PFC and Current Mode LLC Controller SOIC
The MPS HR1211 is a Multi-Mode PFC and Current Mode LLC Controller. It is supplied in a SOIC package.
The HR1211 is a multi-mode PFC and current mode LLC combo controller that is configurable via UART interface.
Key Specifications
| Part Number | HR1211 |
| Function | Multi-Mode PFC and Current Mode LLC Controller |
| Package | SOIC |
| Ordering Codes | HR1211 |
Typical Application Circuit
Applications
- Desktop PCs and ATX Power Supplies
- All-in-One and Gaming Power Supplies
- Notebook Adapters
- LCD TV and Plasma TV Power Supplies
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 HR1211?
SOIC; order codes include HR1211.
Shenzhen Gaorunxin Technology Co., Ltd
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