SECURE INTERFACE & POWER SOLUTIONS VINCENT CHANG Sr. Regional Marketing Manager BL SIP/GC April 2017 EXTERNAL USE
AC/DC Power Converters 2 2
Agenda Introduction of NXP GreenChip family Flyback Solutions with Integrated MOSFET for <15W Applications Flyback Solutions with External MOSFET for <75W Applications DCM Flyback + PFC Solutions for >75W Applications Resonant Controller for >90W Applications Auxiliary Components 3
Introduction to NXP GreenChip Switch-Mode Power Supply (SMPS) Controller Portfolio PFC Secondary Power Range Primary Control Aux. Control Control Control Parallel Supply Resonant >90W TEA1791A TEA173x TEA1792A TEA171x (TEA1713, TEA1716) TEA1795 Active X-cap TEA1916 TEA1892A Discharge TEA1995 TEA1708 Flyback >75W TEA1761 TEA1762 TEA175x (TEA1750/51/52/53/ TEA1755 ) Standby Control TEA1791 (GreenChip III) TEA1703 TEA1792 Flyback <75W Active X-cap Discharge TEA173x (TEA1731/33/38) TEA1892 TEA1708 N/A TEA183x (TEA1832/33/36) TEA1993 Flyback <12W Integrated in TEA1721, TEA1723 N/A N/A (GreenChip SP) Primary IC 4 4
Introduction to NXP GreenChip Power Range Selection Guide 305V MOSFET Internal External MOSFET Flyback Half-Bridge Resonant External Mode External MOSFET Input Voltage MOSFET Controllers with PFC Controllers with PFC 150V 90V TEA172x TEA183x TEA175x TEA191x TEA193x 20V 500W 11W 200W 75W Output Wattage 5 5
Introduction to NXP GreenChip SMPS Topologies Flyback Topology: Excellent input voltage range and decent efficiency Power Factor Correction (PFC) circuit required for high wattage (>70W) power supplies Fewer components (1 MOSFET in Primary, 1 Diode in Secondary) Resonant Half-Bridge Topology: Improved performance and efficiency Optimized for 100W to 300W Output Power Requires a different PFC for >300W More switches (2 MOSFET’s in Primary, 2 Diodes in Secondary) 6 6
Key Products & Applications (1 of 5) Flyback Solutions with Integrated MOSFET for <15W Applications TEA172x (1721, 1723) Flyback Controllers for Compact (<1.5 inch 3 ) Cost-Effective Chargers Primary sensing eliminates opto-coupler and reduces total BoM cost Low no-load standby <20mW @ 10W High efficiency >82% on average Integrated HV start-up current source Small output capacitors save cost and PCB footprint H = 15mm 32mm 26mm 46mm 7 7
TEA1721/TEA1723: Key Feature Set Key Differentiators Customer Collateral Enables low no-load power consumption below 10mW Housed in a SO7 package with high voltage spacing Low component count for cost-effective system design RoHS and Halogen free compliant package Advanced control modes creating high efficiency Available Demo and Promotion Material: ➢ Charger demo boards with <10mW no-load power SO-7 package: ➢ White Goods and Metering/Industrial demo boards Low cost due to high volume production ➢ Datasheets and Application Notes Small package enabling compact designs ➢ Online Calculation Tools HV spacer included Key features Protections SMPS controller with integrated power switch up to 11W Safe restart mode for system fault conditions 700V high voltage MOSFET for universal mains operation Over voltage protection (OVP) with auto-restart function Primary sensed control eliminates opto-coupler Under voltage lockout (UVLO) and clamp protection Variable switching frequency up to 51.5kHz Over temperature protection (OTP) Avoids audible noise in all operation modes (min. fsw>22kHz) Soft start by reduced peak current for zero & low Vout Compensation of cable impedance included Demagnetization protection for guaranteed DCM mode Jitter function for reduced EMI Open and short-circuit protection of the FB pin USB Battery Charging (CC/CV) and Energy Star 2.0 compliant 8 8
TEA1721/TEA1723: Application Diagram Integrated 700V MOSFET with low R DS-ON Primary Side Sensing Eliminates Opto-Coupler No Y-cap Needed Integrated Active HV Start-up to Meet EMI Spec. Eliminates Resistor Bleeder Circuitry BOM Count: <30 Components 9 9
TEA172x – Target Applications » Mobile Phone Chargers Mobile Communication » Smart Phone Chargers » Tablet Chargers » Washing Machines & Dryers » Refrigerators & Freezers Major Home Appliances » Dish washers » Induction Cookers » Room Air Conditioners » E-readers » Portable Audio/Video Computing & Consumer » Set-Top Boxes » PC Peripherals » Smart Metering » (Smart) Lighting Industrial & Residential » Home & Building Automation » HVAC » Industrial Automation & Control 10 10
Key Products & Applications (2 of 5) Flyback Solutions with External MOSFET for <75W Applications TEA183x (1832, 1833, 1836) Primary TEA173x (1731, 1732, 1733, 1738) Fixed Controllers Frequency Flyback Controllers High efficiency ~ 90% Enables < 30mW NLP dissipation with Very low supply currents during start-up output high (output in full regulation) and normal operation Auto burst-mode prevents audible noise Frequency reduction at low power and enables high efficiency at low loads operation to maintain high efficiency Enables low no-load power consumption Integrated active X-cap discharge & – Less than 100mW typically Brown out protection – Less than 40mW is possible in combination with NXP’s Standby TEA1836 + TEA1892 efficiency exceeds Controller (TEA1703) 93% allowing the components inside to Operates under overpower situations be well within thermal limits despite the for an adjustable limited time (OPP) small form factor. TEA1892 Secondary Controller and Synchronous Rectifier Enables the use of low Rdson MOSFET with the TEA1836 DCM Controller 11 11
TEA1832(L) / 1833(L): Fixed Frequency Flyback Controller SMPS Controller IC enabling high- Differences between TEA1833 and performance, low-cost applications TEA1832 Wide VCC range up to ~40V, Lowered UVLO ✓ Higher efficiency at 25% load ~11V (allowing using a smaller VCC cap) because of reduced switching frequency P IN < 55mW @ no load ✓ Improved slope compensation Delivers 200% Peak Power (Supporting ✓ Maximum frequency limitation at high Intel processor series) mains Very low supply current during start-up and restart (typically ~10µA) Low supply current during normal operation (typically 0.58mA, without load) Fmax = 130kHz (peak power performance) with Peak Current run-away protection Burst mode by VCC_rescure (keeps VCC TEA1832TS: Safe restart protection above UVLO during load change, allowing TEA1832LTS: Latched protection version lower value VCC capacitor) TEA1833TS: Safe restart protection Increased maximum duty cycle of ~89% TEA1833LTS: Latched protection version Soft start integrated (~3.5msec) 12 12
TEA1832(L) / 1833(L): Fixed Frequency Flyback Controller Extensive Protections Brown-in and brown-out function via pin PROTECT – C18 Switching VBUS to pin PROTECT low every msec for R26 220pF 47R BD1 C1 C2 C3 CX1 120 F/ F1 3.3nF 2.2nF/ +19.5V/3.34A 330nF/275V KBP206G 400V 500V 630V measurement L R4 LF1 LF2 BD1b BD1d 3.15A/250V 10M 43k R9 2 6 D5 – STPS20M100ST Brown-out is triggered when an internal counter 8 turns BD1a BD1c 10M 44 turns 43k C13, C14 3 7 R5 R10 680 F/25V N R1 R3 1M2 1M2 reaches 9 (32ms) D1 1 SA2M GND R2 R8 1M2 1M2 RM10 C19 L p =650 H 100nF 1k R20 BYV70W R18 Adjustable high/low line compensation C11 D3 2.2 F/50V 3.3 H BAS21W R18 U2-2 SFH618A-4 4 47R C15 8 turns – R13a Bulk capacitor voltage is measured via pin PROTECT BAS21W 1nF 56k 5 D3a 4 C16 ISENSE C12 165k R23 6k8 10k 10nF 2SK3569 220pF 1% R13 R22 – Offset generated via pin ISENSE Q1 R14 6 3 U3 PROTECT DRIVER U1 4R7 10R NCP431AC D4a R15 TEA1832 R24 BAS416 24k 7 2 (SO8) D2 1% CTRL GND RT1 TTC05 BAS316 100k@25C Accurate OVP via pin ISENSE 3.8k@110C 1 VCC 0R20 C9 R11 R17 3k3 C10a 1nF 1% CY1 1nF 470pF – C7 Peak current measurement during primary stroke 400V 100nF/50V BC1 (ferrite bead) U2-1 – OVP measured during secondary stroke SFH618A-4 Integrated OVP on VCC (Count: 4 times) Integrated over-power or high/low line compensation (NXP patented) Low and adjustable OCP trip level Protection input (e.g. for external OTP and/or OVP) IC internal OTP Maximum duty cycle protection (count: 8 times) 13 13
TEA1832(L): Versions Function TEA1832TS TEA1832LTS TEA1832CTS TEA1833TS TEA1833LTS (All safe restart) (Safe Restart) (Latched) * Considered part OPP time-out 30 ms 180 ms 30 ms Slow restart 1 Slow restart 1 OPP Latch UVLO Restart Latch Restart OVP (via ISENSE & VCC) Latch Latch Restart External OTP Latch Latch Restart Internal OTP Latch Latch Latch Brown-out Restart Restart Restart Max duty cycle Restart Restart Restart 1 Slow restart = 3 cycles discharge/charge VCC capacitor 14 14
TEA1836(L): Primary-Side QR Flyback Controller Quasi Resonant controller with NXP patented true valley switching for high efficiency <30mW no-load standby power dissipation with output in full regulation High Voltage startup current source Integrated active X-cap discharge & Brown out protection Powerdown function, lowering no-load power to <20mW or even lower Peak power capability up to 150% (new) and integrated OP timer Integrated mains independent OPP, Demag protection, accurate OVP & OTP Robust MOSFET driver stage, driver maximum on-time protection Nemko and UL certified 15 15
Recommend
More recommend
