SR10 is a non-isolated, capacitor-coupled, switched shunt regulator designed to operate directly from the AC line. Output voltage can be either fixed at 6.0V, 12V, or 24V using an internal feedback divider or be adjusted over a 6.0V to 28V range using an external feedback divider. Output current capability is scalable to 50mA, by selection of the series coupling capacitor (CS) on the AC line. Standby power can be under 20mW, and efficiencies of 75% are possible depending upon configuration and degree of transient protection. All components except for CS are low voltage, easing PCB layout and alleviating high voltage creepage concerns. Inherent short circuit protection is afforded by the reactance of the CS series capacitor, which limits current even with a dead short on the output. Overcurrent protection (OCP) shuts off the shunt during a line transient. Refer to application note AN-H65 for further information.
Additional Features
Efficiencies up to 75% at 20mA
Less than 20mW standby power
Optional 6.0V, 12V or 24V fixed output voltage, or adjustable from 6.0V to 28V
Output current scalable up to 50mA
120VAC to 240VAC input
No magnetics
Inherent short circuit protection
SR10 is a non-isolated, capacitor-coupled, switched shunt regulator designed to operate directly from the AC line. Output voltage can be either fixed at 6.0V, 12V, or 24V using an internal feedback divider or be adjusted over a 6.0V to 28V range using an external feedback divider. Output current capability is scalable to 50mA, by selection of the series coupling capacitor (CS) on the AC line. Standby power can be under 20mW, and efficiencies of 75% are possible depending upon configuration and degree of transient protection. All components except for CS are low voltage, easing PCB layout and alleviating high voltage creepage concerns. Inherent short circuit protection is afforded by the reactance of the CS series capacitor, which limits current even with a dead short on the output. Overcurrent protection (OCP) shuts off the shunt during a line transient. Refer to application note AN-H65 for further information.
Additional Features
- Efficiencies up to 75% at 20mA
- Less than 20mW standby power
- Optional 6.0V, 12V or 24V fixed output voltage, or adjustable from 6.0V to 28V
- Output current scalable up to 50mA
- 120VAC to 240VAC input
- No magnetics
- Inherent short circuit protection
