HIP6004D

Features:

• Drives Two N-Channel MOSFETs
• Operates from +5V or +12V Input
• Simple Single-Loop Control Design
- Voltage-Mode PWM Control
• Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
• Excellent Output Voltage Regulation
- ±1% Over Line Voltage and Temperature
• TTL-Compatible 5-Bit Digital-to-Analog OutputVoltage Selection
- 25mV Binary Steps . . . . . . . . . 1.100VDC to 1.850VDC
• Power-Good Output Voltage Monitor
• Over-Voltage and Over-Current Fault Monitors
- Does Not Require Extra Current Sensing Element,Uses MOSFET's rDS(ON)
• Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from50kHz to over 1MHz
• QFN Package:
- Compliant to JEDEC PUB95 MO-220QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves PCB efficiency and has a thinner profile
• Pb-Free plus anneal available (RoHS compliant)




Application

• Power Supply for K7™, and Other Microprocessors
• High-Power DC-DC Regulators
• Low-Voltage Distributed Power Supplies




Pinout






Specifications

Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .+15V
Boot Voltage, V_BOOT - V_PHASE . . . . . . . . . . . . . . . . . . . . . . . .+15V
Input, Output or I/O Voltage. . . . . . . . . . .GND -0.3V to V_CC +0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Class 2

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

Description

The HIP6004D provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous-rectified buck topology. The HIP6004D integrates all of the control, output adjustment, monitoring and protection functions into a single package. The output voltage of the converter is easily adjusted and precisely regulated. The HIP6004D includes a fully TTLcompatible 5-input digital-to-analog converter (DAC) that adjusts the output voltage from 1.1VDC to 1.85VDC in 25mV increments steps. The precision reference and voltage-mode regulator hold the selected output voltage to within 1% over temperature and line voltage variations. The HIP6004D provides simple, single feedback loop, voltage-mode control with fast transient response. It includes a 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and 6V/s slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0% to 100%. The HIP6004D monitors the output voltage with a window comparator that tracks the DAC output and issues a Power Good signal when the output is within 10%. The HIP6004D protects against over-current and overvoltage conditions by inhibiting PWM operation. Additional built-in overvoltage protection triggers an external SCR to crowbar the input supply. It monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor.