Voltage convertor module including a lead-frame, a unitary bare die and a molding body

A voltage convertor module, comprising:

• a lead-frame having a plurality of electrodes comprising an input voltage electrode, an output voltage electrode, a ground electrode and a controlling electrode;
• a unitary bare die disposed only on the lead-frame, wherein a plurality of pads of the unitary bare die are electrically connected to the electrodes of the lead-frame correspondingly, the unitary bare die comprises:
• the plurality of pads exposed on a surface of the unitary bare die, and the plurality of pads comprise an input voltage pad, an output voltage pad, a switching pad, a ground pad, and a controlling pad, wherein the plurality of pads of the unitary bare die are electrically and directly connected to the electrodes of the lead-frame respectively via connection structures;
• a buck controller block in the unitary bare die comprising a first terminal configured to receive an input voltage, a second terminal configured to receive a feedback signal, a third terminal configured to output a first control signal, and a fourth terminal configured to output a second control signal, wherein the first control signal and the second control signal are generated according to at least the feedback signal;
• a first switching unit block in the unitary bare die comprising a control terminal coupled to the third terminal of the buck controller block, a first power terminal coupled to the first terminal of the buck controller block, and a second power terminal coupled to the switching pad and configured to output the input voltage at the switching pad according to the first control signal;
• a second switching unit block in the unitary bare die comprising a control terminal coupled to the fourth terminal of the buck controller block, a second power terminal configured to receive a reference voltage, and a first power terminal coupled to the switching pad and configured to output the reference voltage at the switching pad according to the second control signal;
• a feedback unit block comprising a first terminal coupled to the output voltage pad and configured to receive an output voltage, and a second terminal coupled to the second terminal of the buck controller block and configured to output the feedback signal according to the output voltage;
• and
• a plurality of routing structures in the unitary bare die configured to couple the buck controller block, the first switching unit block, the second switching unit block, the feedback unit block and the pads with each other;
• and
• a molding body encapsulating the unitary bare die and the lead-frame.