help me （TAS5630）

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msc4456

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Joined 2011
I am DIY a Class D amp recently . I use TI's TAS5630n and the evaluation board (TAS5630DKD2EVM2) , use BTL, dual differential input connection, cause of no DC power, so I made a simple power supply use toroidal transformer ,the DIY-power `s output voltage is 49.5V, my input signal is 200mv, after power them on, 125degc is bright, shudown is bright, the chip does not heat,but no signal output. Have you encountered such a problem? what caused that ,is the power ,the wrong Configuration of the Demo-board? my mail feng4456@yahoo.cn
i wish some people help me
 
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