The QPO-1ZL and QPO-2LZ are output ripple attenuators, which uses active filtering to reduce power supply output ripple and noise (PARD) over 30 dB from 1 kHz to 500 KHz. The QPO-1LZ operates over a voltage range from 3 to 30 Vdc and supports load currents as high as 10 A. The QPO-2LZ operates over a voltage range from 0.3 to 5.5 Vdc and supports load currents as high as 20 A. Output regulation is maintained using remote sensing or the trim input of the power supply. The QPO architecture improves transient response and ensures quiet point-of-load regulation. The QPO reduces the required number of output capacitors to support dynamic loads.
Functional Description:
- Active Output Ripple Attenuation Module
Package / Size:
- LGA SiP / 25 mm x 25 mm
Lead Free:
- Yes
Input Voltage Range:
- 3 V to 30 V (QPO-1LZ)
- 3.3 to 5.5 V (QPO-2LZ)
Current Rating:
- 10 A (QPO-1LZ)
- 20 A (QPO-2LZ)
Headroom Voltage Range:
- 225 mV to 525 mV
Attenuation1 kHz – 500 kHz:
- 30 dB
- >30 dB PARD attenuation, 1 kHz to 500 kHz
- >20 dB PARD attenuation, 50 Hz to 500 Hz
- 10 A rating over a 3-30 Vdc operating range
- Efficiency: Up to 99% with power limit protection
- User selectable optimization of attenuation, dissapation & transient load response
- 1.0 X 1.0 X 0.2″ SiP with SMT or LGA mounting
- Improves transient response of most DC-DC converters
- Reduces required number of output capacitors to support dynamic loads
- Supports precise point-of load regulation
- Surface mount LGA package
- QPO-1LZ Data Sheet – Output Ripple Attenuation (SiP)
- QPO-2LZ Data Sheet – Low Voltage Output Ripple Attenuator
- CE Mark – Low Votlage Directive (2006/95/EC) and RoHS Recast Directive (2011/65/EU)
- CB Certificate
- QPO-1-EVAL1 Evaluation Board – For active output filter up to 10 A, 3 to 30 V
- QPO-2-EVAL1 Evaluation Board – For active output filter, up to 20 A, 0.5 to 5.5 V
