Description
TinySwitch-PK incorporates a 700 V MOSFET, oscillator, highvoltage switched current source, current limit (user selectable), and thermal shutdown circuitry. A unique peak mode feature boosts current limit and frequency for peak load conditions. The
boosted current limit provides the peak output power while the increased peak mode frequency ensures the transformer can be
sized for continuous load conditions rather than peak power demands.
Enhanced Safety and Reliability Features
·Accurate hysteretic thermal shutdown with automatic recovery provides complete system level overload protection and eliminates need for manual reset
·Auto-restart delivers<3% maximum power in short circuit and open loop fault conditions
·Output overvoltage shutdown with optional Zener
·Line undervoltage detect threshold set using a single resistor
·Very low component count enhances reliability and enables single sided printed circuit board layout
·High bandwidth provides fast turn on with no overshoot and excellent transient load response
·Extended creepage between DRAIN and all other pins improves field reliability
Applications
· Applications with high peak-to-continuous power demands-DVDs, PVRs, active speakers(e.g. PC audio), audio amplifiers, modems, photo printers
· Applications with high power demands at startup(large output capacitance or motor loads)-PC standby, low voltage motor drives
(Picture: Pinout)
