XOCECO PH-50HU31, Service Manual

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1
7
Pin description:
1, 2: VIF input 10: TV-SIF output
23: SIF input 17: SDA
7: TV-CVBS output 18: SCL
3. MP7722DF
The MP7722 is a stereo 20W Class D Audio Amplifier. It is one of MPS’second generation of fully
integrated audio amplifiers which dramatically reduces solution size by integrating the following:
180m
Ω power MOSFETs
Startup / Shutdown pop elimination
Short circuit protection
Mute / Standby
The MP7722 utilizes a single ended output structure capable of delivering 2 x 20W into 4
Ω speakers.
MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A/B amplifier at efficiencies greater
than 90%. The circuit is based on the MPS’ proprietary variable frequency topology that delivers low
distortion, fast response time and operates on a single power supply.