TNY278P
Energy-Efficient Off-Line Switcher with Enhanced Flexibility and Extended Power Range
Applications
Product Details
TinySwitch-III incorporates a 700 V power MOSFET, oscillator, high-voltage switched current source, current limit (user selectable) and thermal shutdown circuitry. The IC family uses an ON/OFF control scheme and offers a design flexible solution with a low system cost and extended power capability.
Product Highlights:
- Simple ON/OFF control, no loop compensation needed
- Selectable current limit through BP/M capacitor value
- Higher current limit extends peak power or, in open frame applications, maximum continuous power
- Tight I2f parameter tolerance reduces system cost; minimizes maximum overload power, reducing cost of transformer, primary clamp & secondary components
- On-time extension—extends low line regulation range/hold-up time to reduce input bulk capacitance
- Frequency jittering reduces EMI filter costs
Specifications
| Output Power (Max) - Open Frame, 230V | 28.00 W |
| Output Power (Max) - Enclosed, 230V | 16.00 W |
| Output Power (Max) - Enclosed, Univ | 10.00 W |
| Output Power (Max) - Open Frame, Univ | 21.50 W |
| Breakdown Voltage | 700 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 265 V |
| Auto-Restart & Overvoltage Response | Latch Off |
| IC Package | DIP-8C |
| Internal Switch | Yes |
| Mounting Type | Through Hole |
| Over-Temperature Response | Hysteretic |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Secondary-side |
| Control Features |
Selectable Current Limit
Frequency Jittering
Auto-Restart/Latching Fault Response
On/Off Control
|
| Protection Features |
Output Open Loop
Output Overvoltage
Output Short Circuit
Output Undervoltage
Overtemperature
|
| Topology | Flyback |
| Product Sub-Type | PMIC |
| Secondary Response | Auto-restart |
