SP6120 TM Low Voltage, AnyFET , Synchronous,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters FEATURES N/C 1 16 BST Optimized for Single Supply, 3V - 5.5V Applications ENABLE 2 15 GH High Efficiency: Greater Than 95% Possible 3 14 ISP SWN SP6120 T AnyFET Technology: Capable Of Switching Either 13 ISN 4 GND PFET Or NFET High Side Switch 16 Pin TSSOP V 5 12 PGND FB Selectable Discontinuous or Continuous Conduction 6 11 GL COMP Mode For Use In Battery Or Bus Applications 7 10 SS V CC Fast Transient Response 8 9 R PROG OSC 16-Pin TSSOP, Small Size Accurate 1% Reference Over Line, Load and Temperature Now Available in Lead Free Packaging Accurate 10% Frequency APPLICATIONS Accurate, Rail to Rail, 43mV, Over-Current Sensing DSP Resistor Programmable Frequency Microprocessor Core Resistor Programmable Output Voltage I/O & Logic Capacitor Programmable Soft Start Industrial Control Low Quiescent Current: 950A, 10A in Shutdown Distributed Power Hiccup Over-Current Protection Low Voltage Power DESCRIPTION The SP6120 is a fixed frequency, voltage mode, synchronous PWM controller designed to work T from a single 5V or 3.3V input supply. Sipex s uniqueAnyFET Technology allows the SP6120 to be used for resolving a multitude of price/performance trade-offs. It is separated from the PWM controller market by being the first controller to offer precision, speed, flexibility, protection and efficiency over a wide range of operating conditions. TYPICAL APPLICATIONS CIRCUIT PMOS High Side Drive NMOS High Side Drive 3.3V MBR0530 3.3V PROG = V PROG = GND CC V V IN IN C C IN C IN BST NC BST NC BST 330F x 2 1F 330F x 2 ENABLE ENABLE GH QT1 ENABLE ENABLE GH QT CS CS RS RS ISP 22.1k ISP 22.1k SWN SWN 39nF 1.9V 39nF 1.9V SP6120 SP6120 L1 1A to 8A L1 1A to 8A ISN GND ISN GND V V OUT OUT 2.5H 2.5H V V FB PGND FB PGND QB QB COMP GL DS C COMP GL DS C OUT OUT RF RF 470F x 3 470F x 3 5.23k 5.23k RZ SS V V SS V V RZ CC IN CC IN 15k 15k CSS CP R R CP OSC PROG 0.33F OSC PROG C 100pF SS 100pF 0.33F CV CV R CC CC OSC RI R RI CZ OSC 2.2F CZ 2.2F 18.7k 10k 10k 4.7nF 18.7k 4.7nF QT, QB = FAIRCHILD FDS6690A DS = STMICROELECTRONICS STPS2L25U QT1 = FAIRCHILD FDS6375 (PMOS only) C = SANYO 6TPB330M IN L1 = PANASONIC ETQP6F2R5SFA C = SANYO 4TPB470M OUT TM Date: 1/21/05 SP6120 Low Voltage, AnyFET , Synchronous, Buck Controller Copyright 2005 Sipex Corporation 1ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation Peak Output Current < 10s of the device at these ratings or any other above those GH, GL ............................................................................. 2A indicated in the operation sections of the specifications Operating Temperature Range below is not implied. Exposure to absolute maximum SP6120C ................................................ 0C to +70C rating conditions for extended periods of time may SP6120E .............................................. -40C to +85C affect reliability. Junction Temperature, T .......................................... +125C J Storage Temperature Range ....................... -65C to +150C V .................................................................................... 7V CC Power Dissipation BST ............................................................................. 13.2V ESD Rating ............................................................ 2kV HBM BST-SWN ......................................................................... 7V SWN ....................................................................... -1V to 7V GH .......................................................... -0.3V to BST +0.3V GH-SWN .......................................................................... 7V All Other Pins ........................................... -0.3V to V +0.3V CC ELECTRICAL CHARACTERISTICS Unless otherwise specified: 3.0V < V <5.5V, 3.0V < BST < 13.2, R = 18.7k, C = 0.1F, C = 0.1F, ENABLE = 3V, CC OSC COMP SS CGH = CGL = 3.3nF, V = 1.25V, ISP = ISN = 1.25V, SWN = GND = PGND = 0V, -40C < T <85C (Note 1) FB AMB PSARAMETER CNONDITION MPI TXY MA UNITS QUIESCENT CURRENT VSgupply Current N-o Switchin 08.95 1A. m CC VSVupply Current (Disabled)E-NABLE = 0 5 20 A CC BgST Supply Current N-o Switchin 1 20 A ERROR AMPLIFIER Error Amplifier Transconductance 600 S CVOMP Sink Current = 1.35V, COMP = 0.5V, No 155 356 FB A Faults CVOMP Source Current =51.15V, COMP = 1.6V 15356 A FB COMP Output Impedence 3 MOhm V Input Bias Current -06010 nA FB REFERENCE Eyrror Amplifier Reference Trimmed with Error Amp in Unit 10.23812.25 1V.26 Gain V 3% Low Comparator -3 %VREF FB V 3% High Comparator 3 %VREF FB OSCILLATOR & DELAY PATH Oscillator Frequency 2070 300 33 kHz ORscillator Frequency 2 =010.2kOhm 405 500 55 kHz OSC DCuty Ratio Loop In Control -100% D 9%5 possible RVholtage Information Only - Moves wit OSC 0V.65 Oscillator Trim MVinimum GH Pulse Width > 4.5V, Ramp up COMP CC Voltage > 0.6V until GH starts 1s20 n Switching TM Date: 1/21/05 SP6120 Low Voltage, AnyFET , Synchronous, Buck Controller Copyright 2005 Sipex Corporation 2