SSPP66113344HH High Voltage, 600kHz Synchronous PWM Step Down High Voltage, 600kHz Synchronous PWM Step Down CCoonnttrroolllleerr January 2009 Rev. 2.0.0 GENERAL DESCRIPTION APPLICATIONS The SP6134H is a 600kHz constant frequency, Wireless Base Station voltage mode, synchronous PWM step down Automotive controller optimized for high efficiency. Industrial The SP6134H is adequately suited for split plane applications utilizing a low power 5V rail Power Supply to power the controller circuitry, minimizing power dissipation. Its wide input voltage range FEATURES of 3V to 15V allows for conversions from the standard 3.3V, 5V, 9.6V and 12V power rails 3V to 28V Step Down Achieved Using to an output voltage adjustable down to 0.8V. Dual Input Developed around a wide bandwidth internal On-Board 1.5 sink (2 source) NFET amplifier, the SP6134H can accommodate type Drivers II and type III compensation schemes. Up to 15A Output Capability Protection features include a programmable UVLO, thermal shutdown and output short UVLO Detects Both VCC and VIN circuit protection. Short-Circuit Protection with Auto- The SP6134H is part of a larger family of step Restart down controllers operating at various Supports Type II or III Compensation switching frequencies up to 1300kHz and input voltages up to 28V. Refer to Exars SP6134, Programmable Soft Start SP6132, SP6132H, SP6137 and SP6139 for Fast Transient Response complete details. High Efficiency: Greater than 94% The SP6134H is available in lead free, RoHS compliant, space saving 10-pin MSOP Non-synchronous Start-Up package. Small 10-Pin MSOP Package U.S. Patent 6,922,041 TYPICAL APPLICATION DIAGRAM V IN 3.5V - 15V C1 C2 22F 22F 8 7 6 5 16V 16V V = 5V 30mA CC QT FDS6676S GND 14.5A, 6m 4 C1, C2 RLF 1 2 3 Ceramic 3.0,5% 1210 CBST X5R 1F U1 DBST V V OUT IN MBR0530 SP6134H R5 RZ3 0.8V - 3.3V 1 Bead 8 7 6 5 10 VCC BST 0 - 10 A 4.64k, 1% C 2 9 C3 C4 VCC GND 3 GL GH R1 QB 10F 47F 47F 3 8 GND SWN 68.1k, 1% 4 6.3V 6.3V CZ3 R3 6.3V 4 7 221k, 1% VFB SS SS 220pF 0.8V 1 2 3 5 6 COMP UVIN FDS6676S C 14.5A, 6.0m UV VCC IN CSS Ceramic RZ2 GND2 CZ2 47nF 8050 R2 820pF 40.2k, 1% R4 X5R 21.5k, 1% C3, C4 100k, 1% CP1 Ceramic 1210 CF1 56pF X5R 100pF fs=600Khz V =(R1/R2 +1)V OUT FB Fig. 1: SP6134H Application Diagram Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 Fax. +1 510 668-7001 SSPP66113344HH High Voltage, 600kHz Synchronous PWM Step Down High Voltage, 600kHz Synchronous PWM Step Down CCoonnttrroolllleerr ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of GH, GL peak output current <10us..............................2A the device at these ratings or any other above those Storage Temperature ..............................-65C to 150C indicated in the operation sections of the specifications Power Dissipation.................................Internally Limited below is not implied. Exposure to absolute maximum ESD Rating BST Pin (HBM - Human Body Model)...... 1.5kV rating conditions for extended periods of time may affect ESD Rating All Other Pins (HBM)...............................2kV reliability. Thermal Resistance ....................................41.9C/W JA V .......................................................................... 7V cc Operating Voltage Range ................................ 3V to 28V BST ...................................................................... 33V BST-SWN ......................................................-0.3 to 7V SWN ............................................................-1V to 30V GH................................................... -0.3V to BST+0.3V GH-SWN.................................................................. 7V All other pins ..................................... -0.3V to V +0.3V CC ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Junction Temperature of T = 25C only limits applying over the full J Operating Junction Temperature range are denoted by a . Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T = 25C, and are provided for J reference purposes only. Unless otherwise indicated, V = 4.5V to 5.5V, BST= V , SWN=GND=0V, UVIN=3V, CV = 10F, cc cc cc C =0.1uF, CGH=CGL=3.3nF, C =50nF, T = 40C to 85C (SP6134HEU) or T = 0C to 70C (SP6134HCU). COMP SS A A Parameter Min. Typ. Max. Units Conditions V Supply Current 1.5 3 mA VFB =0.9V (No switching) CC BST Supply Current 0.2 0.4 mA VFB =0.9V (No switching) V UVLO Start Threshold 4.00 4.25 4.50 V CC V UVLO Hysteresis 100 200 300 mV CC UVIN Start Threshold 2.30 2.50 2.65 V UVIN Hysteresis 260 300 390 mV UVIN Input Current 1 uA UVIN=3.0V 2X Gain Config., Measure VFB, V =5V, CC Error Amplifier Reference 0.792 0.800 0.808 V T=25C Error Amplifier Reference 0.788 0.800 0.812 V Over Line and Temperature Error Amplifier 6 mS Transconductance Error Amplifier Gain 60 dB No Load COMP Sink Current 150 uA VFB=0.9V, COMP=0.9V COMP Source Current 150 uA VFB=0.7V, COMP=2.2V VFB Input Bias Current 50 200 nA VFB=0.8V Internal Pole 4 MHz COMP Clamp 2.5 V VFB=0.7V, TA = 25C COMP Clamp Temp. Coefficient -2 mV/C Ramp Amplitude 0.92 1.10 1.28 V TA = 25C, RAMP COMP until GH starts RAMP Offset 1.1 V switching RAMP Offset Temp. Coefficient -2 mV/C GH Minimum Pulse Width 90 180 ns Maximum Controllable Duty Maximum Duty Ratio Measured just 92 97 % Ratio before pulse skipping begins Maximum Duty Ratio 100 % Valid for 20 Cycles Internal Oscillator Frequency 510 600 690 kHz SS Charge Current: 10 uA 2008 Exar Corporation 2/15 Rev. 2.0.0