DatasheetsPDF.com

TNY268G Dataheets PDF



Part Number TNY268G
Manufacturers Power Integrations
Logo Power Integrations
Description Low Power Off-line Switcher
Datasheet TNY268G DatasheetTNY268G Datasheet (PDF)

This product is not recommended for new designs. TNY263-268 TinySwitch-II Family Enhanced, Energy Efficient, Low Power Off-line Switcher Product Highlights TinySwitch-II Features Reduce System Cost • Fully integrated auto-restart for short circuit and open loop fault protection – saves external component costs • Built-in circuitry practically eliminates audible noise with ordinary dip-varnished transformer • Programmable line undervoltage detect feature prevents power on/off glitches – saves ex.

  TNY268G   TNY268G



Document
This product is not recommended for new designs. TNY263-268 TinySwitch-II Family Enhanced, Energy Efficient, Low Power Off-line Switcher Product Highlights TinySwitch-II Features Reduce System Cost • Fully integrated auto-restart for short circuit and open loop fault protection – saves external component costs • Built-in circuitry practically eliminates audible noise with ordinary dip-varnished transformer • Programmable line undervoltage detect feature prevents power on/off glitches – saves external components • Frequency jittering dramatically reduces EMI (~10 dB) – minimizes EMI filter component costs • 132 kHz operation reduces transformer size – allows use of EF12.6 or EE13 cores for low cost and small size • Very tight tolerances and negligible temperature variation on key parameters eases design and lowers cost • Lowest component count switcher solution • Expanded scalable device family for low system cost Better Cost/Performance over RCC & Linears • Lower system cost than RCC, discrete PWM and other integrated/hybrid solutions • Cost effective replacement for bulky regulated linears • Simple ON/OFF control – no loop compensation needed • No bias winding – simpler, lower cost transformer • Simple design practically eliminates rework in manufacturing EcoSmart™– Extremely Energy Efficient • No load consumption <50 mW with bias winding and <250 mW without bias winding at 265 VAC input • Meets California Energy Commission (CEC), Energy Star, and EU requirements • Ideal for cell-phone charger and PC standby applications High Performance at Low Cost • High voltage powered – ideal for charger applications • High bandwidth provides fast turn on with no overshoot • Current limit operation rejects line frequency ripple • Built-in current limit and thermal protection improves safety Description TinySwitch™-II integrates a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry onto a monolithic device. The start-up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias winding and associated circuitry. In addition, the TinySwitch-II devices incorporate auto-restart, line undervoltage sense, and frequency jittering. An innovative design minimizes audio frequency components in the simple ON/OFF control scheme to practically eliminate audible noise with standard taped/varnished transformer construction. + Optional UV Resistor Wide-Range High-Voltage DC Input D TinySwitch-II EN/UV BP S - Figure 1. Typical Standby Application. + DC Output - PI-2684-061815 Output Power Table Product3 230 VAC ± 15% Adapter1 Open Frame2 TNY263 P/G 5W 7.5 W TNY264 P/G 5.5 W 9W TNY265 P/G 8.5 W 11 W TNY266 P/G 10 W 15 W TNY267 P/G 13 W 19 W TNY268 P/G 16 W 23 W 85-265 VAC Adapter1 Open Frame2 3.7 W 4.7 W 4W 6W 5.5 W 7.5 W 6W 9.5 W 8W 12 W 10 W 15 W Table 1. Output Power Table. Notes: 1. Minimum continuous power in a typical non-ventilated enclosed adapter measured at 50 °C ambient. 2. Minimum practical continuous power in an open frame design with adequate heat sinking, measured at 50 °C ambient (See Key Applications Considerations). 3. Packages: P: DIP-8B, G: SMD-8B. Please see Part Ordering Information. The fully integrated auto-restart circuit safely limits output power during fault conditions such as output short circuit or open loop, reducing component count and secondary feedback circuitry cost. An optional line sense resistor externally programs a line undervoltage threshold, which eliminates power down glitches caused by the slow discharge of input storage capacitors present in applications such as standby supplies. The operating frequency of 132 kHz is jittered to significantly reduce both the quasi-peak and average EMI, minimizing filtering cost. www.power.com This Product is Covered by Patents and/or Pending Patent Applications. August 2016 TNY263-268 BYPASS (BP) 240 µA 50 µA LINE UNDERVOLTAGE AUTORESTART COUNTER FAULT PRESENT 6.3 V RESET ENABLE REGULATOR 5.8 V DRAIN (D) + CURRENT LIMIT STATE MACHINE - 5.8 V 4.8 V BYPASS PIN UNDERVOLTAGE VILIMIT CURRENT LIMIT COMPARATOR + - 1.0 V + VT ENABLE/ UNDERVOLTAGE (EN/UV) 1.0 V JITTER CLOCK DCMAX OSCILLATOR THERMAL SHUTDOWN S Q R Q LEADING EDGE BLANKING Figure 2. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: Power MOSFET drain connection. Provides internal operating current for both start-up and steady-state operation. BYPASS (BP) Pin: Connection point for a 0.1 µF external bypass capacitor for the internally generated 5.8 V supply. ENABLE/UNDERVOLTAGE (EN/UV) Pin: This pin has dual functions: enable input and line undervoltage sense. During normal operation, switching of the power MOSFET is controlled by this pin. MOSFET switching is terminated when a current greater than 240 µA is drawn from this pin. .


TNY268P TNY268G TNY274GN


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)