LNK625DG
Dramatically simplifies low power power supply designs by eliminating an optocoupler and secondary control circuitry.
Applications
Product Details
Description
The LinkSwitch-CV dramatically simplifies CV power supply design with tight CV requirements and by eliminating an optocoupler and secondary control circuitry. The device introduces a revolutionary control technique to provide very tight output voltage regulation, along with input voltage variations and temperature.
The device incorporates a 725 V power MOSFET, a novel On/Off control state machine, a high voltage switched current source for self biasing, frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry onto a monolithic IC.
Product Highlights
Dramatically Simplifies CV Converters
- Eliminates optocoupler and all secondary CV control circuitry
- Eliminates bias winding supply – IC is self biasing
Advanced Performance Features
- Compensates for external component temperature variations
- Very tight IC parameter tolerances using proprietary trimming technology
- Frequency jittering greatly reduces EMI filter cost
- Even tighter output tolerances achievable with external resistor selection/trimming
Advanced Protection/Safety Features
- Auto-restart protection reduces delivered power by <95% for output short circuit and all control loop faults (open and shorted components)
- Hysteretic thermal shutdown – automatic recovery reduces power supply returns from the field
- Meets HV creepage requirements between Drain and all other pins, both on the PCB and at the package
- 725 V power MOSFET
Applications
- DVD/STB
- Adapters
- Standby and auxiliary supplies
- Home appliances, white goods and consumer electronics
- Industrial controls
Specifications
| Output Power (Max) - Open Frame, 230V | 13.50 W |
| Output Power (Max) - Enclosed, 230V | 8.00 W |
| Output Power (Max) - Enclosed, Univ | 6.50 W |
| Output Power (Max) - Open Frame, Univ | 8.00 W |
| Breakdown Voltage | 725 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 265 V |
| IC Package | SO-8C |
| Internal Switch | Yes |
| Mounting Type | Surface Mount |
| Over-Temperature Response | Hysteretic |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Primary-side |
| Control Features |
Frequency Jittering
Auto-Restart/Latching Fault Response
On/Off Control
|
| Protection Features |
Overtemperature
Output Short Circuit
Output Open Loop
|
| Output Profile | CV |
| Topology |
Flyback
Tapped Buck
|
| Product Sub-Type | PMIC |
| Secondary Response | Auto-restart |
