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TPS54239: Load current

Part Number: TPS54239

The device works well up to 100mA load,the frequency is 600kHz. At load 130mA the voltage drops by 1.3V and the frequency is 300kHz with bizarre waveform on Pin 3, see below. At 200mA load the output voltage pulsating with 0.5V average. We use the exactly recommended circuit, see below. What is the problem?