| 摘要 |
A power converter control device includes an alarm signal generation circuit which detects information necessary for a protection operation of a semiconductor element configuring a power converter, and generates and externally outputs an alarm signal with a pulse width responding to a protection factor; a temperature signal generation circuit which detects a temperature of the semiconductor element, and generates a PWM signal, correlated with the temperature, the cycle of which is different from the pulse width of the alarm signal; and an output control circuit which selects the PWM signal in normal time, and selects and externally outputs the alarm signal in place of the PWM signal when the alarm signal is generated. |
| 主权项 |
1. A power converter control device, comprising:
a drive circuit configured to drive a semiconductor element; a plurality of protection circuits, each of the plurality of protection circuits being configured to detect information corresponding to a protection operation of the semiconductor element, to generate a protection signal, and, in accordance with the protection signal, stop the drive of the semiconductor element by the drive circuit; an alarm signal generation circuit configured to, in response to an output of each of the plurality of protection circuits, generate an alarm signal with a pulse width corresponding to a protection factor of the semiconductor element, and to output the alarm signal; a temperature signal generation circuit configured to detect a temperature of the semiconductor element, and to generate a pulse width modulated (PWM) signal, correlated with the temperature, the cycle of the PWM signal being different from the pulse width of the alarm signal; and an output control circuit configured to select and output the alarm signal instead of the PWM signal when the alarm signal is generated. |
