Fig. 1. Schematic diagram of switched-linear power supply

Fig. 2. Control strategy of switched-linear power supply

Fig. 3. Influence of ambient temperature variations on output current

Fig. 4. Scheme of temperature control circuit

Fig. 5. Constant temperature device and the DAC output curve after adding temperature compensation

Fig. 6. Comparison of old and modified structure of water-cooled radiator and power module installed in a 3U chassis

Fig. 7. Heat dissipation effect curve of new structure (8 h)

Fig. 8. The 8 h stability of the current under various output currents

Fig. 9. Current ripple of 500 A output current under different load conditions