DATASHEET HIP6012 FN4324 Rev.2.00 Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller December 27, 2004 The HIP6012 provides complete control and protection for a Features DC-DC converter optimized for high-performance Drives Two N-Channel MOSFETs microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous-rectified buck Operates From +5V or +12V Input topology. The HIP6012 integrates all of the control, output Simple Single-Loop Control Design adjustment, monitoring and protection functions into a single - Voltage-Mode PWM Control package. Fast Transient Response The output voltage of the converter can be precisely - High-Bandwidth Error Amplifier regulated to as low as 1.27V, with a maximum tolerance of - Full 0% to 100% Duty Ratio 1.5% over temperature and line voltage variations. Excellent Output Voltage Regulation The HIP6012 provides simple, single feedback loop, voltage- - 1.27V Internal Reference mode control with fast transient response. It includes a - 1.5% Over Line Voltage and Temperature 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error Overcurrent Fault Monitor amplifier features a 15MHz gain-bandwidth product and - Does Not Require Extra Current Sensing Element 6V/ s slew rate which enables high converter bandwidth for - Uses MOSFETs r DS(ON) fast transient performance. The resulting PWM duty ratio Small Converter Size ranges from 0% to 100%. - Constant Frequency Operation The HIP6012 protects against overcurrent conditions by - 200kHz Free-Running Oscillator Programmable from inhibiting PWM operation. The HIP6012 monitors the current 50kHz to Over 1MHz by using the r of the upper MOSFET which eliminates DS(ON) 14 Pin, SOIC and TSSOP Packages the need for a current sensing resistor. Pb-Free Available (RoHS Compliant) Pinout HIP6012 Applications (SOIC, TSSOP) TOP VIEW Power Supply for Pentium, Pentium Pro, PowerPC and Alpha Microprocessors 14 RT 1 VCC High-Power 5V to 3.xV DC-DC Regulators OCSET 2 13 PVCC Low-Voltage Distributed Power Supplies SS 3 12 LGATE 11 COMP 4 PGND Ordering Information 10 FB 5 BOOT 9 PART TEMP. PKG. EN 6 UGATE o NUMBER RANGE ( C) PACKAGE NO. 8 GND 7 PHASE HIP6012CB 0 to 70 14 Ld SOIC M14.15 HIP6012CBZ 0 to 70 14 Ld SOIC (Pb-free) M14.15 (See Note) HIP6012CV 0 to 70 14 Ld TSSOP M14.173 HIP6012CVZ 0 to 70 14 Ld TSSOP (Pb-free) M14.173 (See Note) Add -T suffix for tape and reel. NOTE: Intersil Pb-free products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. FN4324 Rev.2.00 Page 1 of 12 December 27, 2004HIP6012 Typical Application 12V +5V OR +12V VCC OCSET SS MONITOR AND EN PROTECTION BOOT RT OSC UGATE PHASE HIP6012 +V O REF +12V PVCC LGATE - + + FB PGND - COMP GND Block Diagram VCC POWER-ON EN RESET (POR) 10 A + SOFT- SS OCSET - START OVER- CURRENT BOOT 4V UGATE 200 A PHASE PWM 1.27 VREF COMPARATOR GATE REFERENCE INHIBIT + CONTROL + - LOGIC - PVCC PWM ERROR AMP LGATE FB PGND COMP GND OSCILLATOR RT FN4324 Rev.2.00 Page 2 of 12 December 27, 2004