LNK603-606/613-616 LinkSwitch-II Family Energy-Efficient, Accurate CV/CC Switcher for Adapters and Chargers Product Highlights Dramatically Simplifies CV/CC Converters Eliminates optocoupler and all secondary CV/CC control circuitry Eliminates all control loop compensation circuitry Advanced Performance Features Wide Range Compensates for transformer inductance tolerances High-Voltage DC Input Compensates for input line voltage variations D FB Compensates for cable voltage drop (LNK61X series) LinkSwitch-II BP/M Compensates for external component temperature variations Very tight IC parameter tolerances using proprietary trimming S technology Frequency jittering greatly reduces EMI filter cost Even tighter output tolerances achievable with external resistor PI-4960-012315 selection/trimming (a) Typical Application Schematic Programmable switching frequency up to 85 kHz to reduce trans- former size 5% V O Advanced Protection/Safety Features Auto-restart protection reduces power delivered by >95% for output short-circuit and control loop faults (open and shorted components) Hysteretic thermal shutdown automatic recovery reduces power 10% supply returns from the field Meets high-voltage creepage requirements between DRAIN and all other pins both on the PCB and at the package EcoSmart Energy Efficient PI-4906-012315 I O Easily meets all global energy efficiency regulations (b) Output Characteristic No-load consumption below 30 mW at 230 VAC with optional Figure 1. Typical Application/Performance Not a Simplified Circuit (a) and external bias winding Output Characteristic Envelope (b). (see Application Section for ON/OFF control provides constant efficiency down to very light loads more information). ideal for CEC and ENERGY STAR 2.0 regulations No current sense resistors maximizes efficiency Output Power Table Green Package 85-265 VAC 3 Halogen free and RoHS compliant package Product 1 2 Adapter Open Frame Applications LNK603/613PG/DG 2.5 W 3.3 W Chargers for cell/cordless phones, PDAs, MP3/portable audio LNK604/614PG/DG 3.5 W 4.1 W devices, adapters, LED drivers, etc. LNK605/615PG/DG 4.5 W 5.1 W Description LNK606/616PG/GG/DG 5.5 W 6.1 W The LinkSwitch-II dramatically simplifies low power CV/CC charger designs by eliminating an optocoupler and secondary control circuitry. Table 1. Output Power Table. The device introduces a revolutionary control technique to provide very Notes: tight output voltage and current regulation, compensating for transformer 1. Minimum continuous power in a typical non-ventilated enclosed adapter and internal parameter tolerances along with input voltage variations. measured at +50 C ambient, device, T <100 C. J 2. Maximum practical continuous power in an open frame design with adequate The device incorporates a 700 V power MOSFET, a novel ON/OFF control heat sinking, measured at 50 C ambient (see Key Applications Consider- ations section for more information). state machine, a high-voltage switched current source for self biasing, 3. Packages: P: DIP-8C, G: SMD-8C, D: SO-8C. frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry onto a monolithic IC. DIP-8C (P Package) SMD-8C (G Package) SO-8C (D Package). Figure 2. Package Options. www.power.com August 2016 This Product is Covered by Patents and/or Pending Patent Applications.LNK603-606/613-616 DRAIN (D) REGULATOR BYPASS 6 V (BP/M) + 6 V FB - + 5 V OUT Reset STATE D Q FEEDBACK V TH - MACHINE (FB) V ILIMIT t SAMPLE-OUT I Drive LIM V DC ILIMIT CABLE DROP MAX COMPENSATION FAULT FB 6.5 V Auto-Restart Open-Loop THERMAL INDUCTANCE SHUTDOWN CORRECTION DC t MAX SAMPLE-INPUT t SAMPLE SAMPLE-OUT DELAY t SAMPLE-INPUT OSCILLATOR SOURCE (S) I SOURCE LIM V ILIMIT CONSTANT (S) CURRENT Current Limit Comparator LEADING EDGE BLANKING PI-4908-012915 Figure 3. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: P Package (DIP-8C) This pin is the power MOSFET drain connection. It provides internal G Package (SMD-8C) D Package (SO-8C) operating current for both start-up and steady-state operation. BYPASS/MULTI-FUNCTIONAL PROGRAMMABLE (BP/M) Pin: This pin has multiple functions: 8 FB 1 1 8 S FB S 1. It is the connection point for an external bypass capacitor for the 2 7 BP/M 2 7 S internally generated 6 V supply. BP/M S 2. It is a mode selection for the cable drop compensation for 6 6 S S LNK61X series. 4 5 D S D 4 5 S FEEDBACK (FB) Pin: During normal operation, switching of the power MOSFET is controlled by this pin. This pin senses the AC voltage on the bias winding. This control input regulates both the output voltage in CV mode and output current in CC mode based on the flyback voltage of the bias winding. PI-3491-020615 The internal inductance correction circuit uses the forward voltage on Figure 4. Pin Configuration. the bias winding to sense the bulk capacitor voltage. SOURCE (S) Pin: This pin is internally connected to the output MOSFET source for high-voltage power and control circuit common returns. 2 Rev. J 08/16 www.power.com - +