DIGITALLY CONTROLLED POWER SUPPLY HAVING FAILURE DETECTION FUNCTION
First Claim
1. A digitally controlled power supply comprising:
- a power unit converting an input voltage based on a gate signal to output an output voltage or converting an input current based on the gate signal to output an output current, and outputting a first feedback signal and a second feedback signal;
a first A/D converter outputting a digital signal for feedback and a first monitoring signal based on the first feedback signal which is primarily for regulation and is secondarily for monitoring;
a second A/D converter outputting a second monitoring signal based on the second feedback signal which is primarily for the monitoring;
a driver outputting the gate signal based on a PWM signal;
a digital controller for power supply control comprising a PWM circuit outputting the PWM signal for controlling the power unit based on the digital signal for feedback and a first failure detection signal output unit outputting a first failure detection signal when a value of the first monitoring signal is not within a predetermined range;
a digital controller for monitoring comprising a second failure detection signal output unit which outputs a second failure detection signal when a value of the second monitoring signal is not within a predetermined range; and
an alarm output unit outputting an alarm when at least either the first failure detection signal or the second failure detection signal is output.
1 Assignment
0 Petitions
Accused Products
Abstract
A digitally controlled power supply of the present invention comprises: a power unit outputting an output voltage, first and second feedback signals; a first A/D converter outputting a digital feedback signal and a first monitoring signal; a second A/D converter outputting a second monitoring signal; a driver outputting the gate signal; a digital controller for power supply control comprising a PWM circuit and a first failure detection signal output unit outputting a first failure detection signal when the first monitoring signal is not within a predetermined range; a digital controller for monitoring comprising a second failure detection signal output unit which outputs a second failure detection signal when the second monitoring signal is not within a predetermined range; and an alarm output unit outputting an alarm when at least either the first or second failure detection signal is output.
13 Citations
4 Claims
-
1. A digitally controlled power supply comprising:
-
a power unit converting an input voltage based on a gate signal to output an output voltage or converting an input current based on the gate signal to output an output current, and outputting a first feedback signal and a second feedback signal; a first A/D converter outputting a digital signal for feedback and a first monitoring signal based on the first feedback signal which is primarily for regulation and is secondarily for monitoring; a second A/D converter outputting a second monitoring signal based on the second feedback signal which is primarily for the monitoring; a driver outputting the gate signal based on a PWM signal; a digital controller for power supply control comprising a PWM circuit outputting the PWM signal for controlling the power unit based on the digital signal for feedback and a first failure detection signal output unit outputting a first failure detection signal when a value of the first monitoring signal is not within a predetermined range; a digital controller for monitoring comprising a second failure detection signal output unit which outputs a second failure detection signal when a value of the second monitoring signal is not within a predetermined range; and an alarm output unit outputting an alarm when at least either the first failure detection signal or the second failure detection signal is output. - View Dependent Claims (2, 3, 4)
-
Specification