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HIP6004A Datasheet

PWM Controller and Output Voltage Monitor

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DATASHEET
HIP6004A
Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor
FN4417
Rev.2.00
November 2002
The HIP6004A 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 HIP6004A 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 HIP6004A includes a fully TTL-
compatible 5-input digital-to-analog converter (DAC) that
adjusts the output voltage from 2.1VDC to 3.5VDC in 0.1V
increments and from 1.8VDC to 2.05VDC in 0.05V steps.
The precision reference and voltage-mode regulator hold the
selected output voltage to within 1% over temperature and
line voltage variations.
The HIP6004A 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/ms slew rate which enables high converter bandwidth for
fast transient performance. The resulting PWM duty ratio
ranges from 0% to 100%.
The HIP6004A 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 HIP6004A
protects against over-current and over-voltage conditions by
inhibiting PWM operation. Additional built-in over-voltage
protection triggers an external SCR to crowbar the input
supply. The HIP6004A monitors the current by using the
rDS(ON) of the upper MOSFET which eliminates the need for
a current sensing resistor.
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
HIP6004ACB
0 to 70 20 Ld SOIC
PKG.
NO.
M20.3
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 Output Voltage
Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.8VDC to 3.5VDC
- 0.1V Binary Steps . . . . . . . . . . . . . . . 2.1VDC to 3.5VDC
- 0.05V Binary Steps . . . . . . . . . . . . . 1.8VDC to 2.05VDC
• 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 from
50kHz to over 1MHz
Applications
• Power Supply for Pentium®, Pentium Pro, Pentium II,
PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors
High-Power 5V to 3.xV DC-DC Regulators
Low-Voltage Distributed Power Supplies
Pinout
HIP6004A
(SOIC)
TOP VIEW
VSEN 1
OCSET 2
SS 3
VID0 4
VID1 5
VID2 6
VID3 7
VID4 8
COMP 9
FB 10
20 RT
19 OVP
18 VCC
17 LGATE
16 PGND
15 BOOT
14 UGATE
13 PHASE
12 PGOOD
11 GND
FN4417 Rev.2.00
November 2002
Page 1 of 13


Renesas Electronics Components Datasheet

HIP6004A Datasheet

PWM Controller and Output Voltage Monitor

No Preview Available !

HIP6004A
Typical Application
PGOOD
SS
OVP
+12V
VCC
MONITOR AND
PROTECTION
RT
VID0
VID1
VID2
VID3
VID4
FB
OSC
HIP6004A
D/A
-
+- +
COMP
VSEN
OCSET
EN
BOOT
UGATE
PHASE
LGATE
PGND
GND
VIN = +5V OR +12V
+VOUT
Block Diagram
VSEN
OCSET
VID0
VID1
VID2
VID3
VID4
FB
COMP
RT
REFERENCE
TTL D/A
CONVERTER
(DAC)
VCC
110%
90%
115%
200A
+-
+-
OVER-
VOLTAGE
+-
+- OVER-
CURRENT
4V
POWER-ON
RESET (POR)
SOFT-
START
10A
DACOUT
+-
ERROR
AMP
PWM
COMPARATOR
+-
INHIBIT
PWM
GATE
CONTROL
LOGIC
OSCILLATOR
PGOOD
OVP
SS
BOOT
UGATE
PHASE
LGATE
PGND
GND
FN4417 Rev.2.00
November 2002
Page 2 of 13


Part Number HIP6004A
Description PWM Controller and Output Voltage Monitor
Maker Renesas
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