TDK-Lambda: new PSINK option for the GENESYS+ power supplies

TDK Corporation announces the introduction of a Power Sink (PSINK) option to the 1.7kW and 3.4kW models of the TDK-Lambda GENESYS+ series of high-power density programmable DC power supplies. Capable of absorbing and dissipating up to 300W of peak power and 100W continuously, the PSINK can provide up to 25 times faster down programming speeds, with fall times of just 12.5ms, even under no load conditions.

The option is available on the 1U high, 19” rack mount 1.7kW and 3.4kW rated units with output voltages of 0-20V, 0-30V, 0-40V, 0-60V and 0-100V.

The GENESYS+ PSINK option is ideal for testing electric motors with PWM (pulse width modulated) speed control that return power to their source under motor braking conditions. Examples include automotive electric windows, power mirrors and power seats. The option can also be used during battery and capacitor testing to discharge after testing is complete. A rapid downtime enables shorter test cycles to be performed and more accurately simulates normal operation.

The PSINK module is mounted inside of the GENESYS+ power supply. It allows the power supply to absorb energy fed back from the load. This can be energy generated from suddenly stopping a DC motor or discharging a battery or capacitor, enabling the ATE (Automated Test Equipment) to proceed to the next test quickly. The internal control logic senses the output voltage of the power supply. If the sensed voltage is higher than the desired voltage, the logic signals the PSINK module to sink current from the load, via the output terminals, and thus maintain a constant voltage across the load.

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