Skyworth color TV 168P-P37TTF-0 1 type power supply circuit measured data - Power Circuit - Circuit Diagram

MOS power IC full range

One-piece inductor

Skyworth 168P-P37TTF-01 power supply board is used in a variety of 3242-inch LCD color TVs. Its circuit is shown in Figure 1. The power factor correction (PFC) control chip uses a critical conduction mode power factor correction controller FAN7530, which will rectify. The +300V of the filtered output is boosted to +380V; the sub-switching power supply adopts the low-power offline switching power supply single-chip STR-A6159M, and outputs +5V voltage after power-on; the main switching power supply adopts the SIP-9 package thick film block FSFR1700, which is turned on twice. After the output of +12V and +24V voltage, the motherboard and backlight drive circuit. The pin function and measured data of each integrated block are shown in Table 1 to Table 3. The measured data of the optical and three-terminal precision voltage regulator TL431 are shown in Table 4.





Description: 1. The data in the table is measured by the MF47 multimeter R×1 file. 2. The open circuit resistance refers to the fact that each leg of the component is in a floating state, and one of the test leads of the multimeter is connected to the ground terminal, and the other test pen is connected to the other pin; the resistance of the circuit means that each pin of the component is soldered to the circuit. The resistance measured on the board.