hip6302 Intersil Corporation, hip6302 Datasheet - Page 3

• Manufacturer Part Number: hip6302
• Description: Microprocessor Core Voltage Regulator Multiphase Buck Pwm Controller
• Manufacturer: Intersil Corporation

Simplified Power System Diagram
Functional Pin Description
VID4 (Pin 1), VID3 (Pin 2), VID2 (Pin 3), VID1 (Pin 4)
and VID0 (Pin 5)
Voltage Identification inputs from microprocessor. These pins
respond to TTL and 3.3V logic signals. The HIP6302 decodes
VID bits to establish the output voltage. See Table 1.
COMP (Pin 6)
Output of the internal error amplifier. Connect this pin to the
external feedback and compensation network.
FB (Pin 7)
Inverting input of the internal error amplifier.
FS/DIS (Pin 8)
Channel frequency, F
this pin to ground sets the switching frequency of the
converter. Pulling this pin to ground disables the converter
and three states the PWM outputs. See Figure 10.
FS/DIS
COMP
VSEN
VID4
VID3
VID2
VID1
VID0
FB
HIP6302
1
2
3
4
5
6
7
8
SW
VID
, select and disable. A resistor from
3
PWM 1
PWM 2
16
15
14
13
12
11
10
9
V
PGOOD
ISEN1
PWM1
PWM2
ISEN2
VSEN
GND
CC
RECTIFIED BUCK
RECTIFIED BUCK
SYNCHRONOUS
SYNCHRONOUS
HIP6302
HIP6302
CHANNEL
CHANNEL
GND (Pin 9)
Bias and reference ground. All signals are referenced to this
pin.
VSEN (Pin 10)
Power good monitor input. Connect to the microprocessor-
CORE voltage.
ISEN2 (Pin 11) and ISEN1 (Pin 14)
Current sense inputs from the individual converter channel’s
phase nodes.
PWM2 (Pin 12) and PWM1 (Pin 13)
PWM outputs for each driven channel in use. Connect these
pins to the PWM input of a HIP6601/2/3 driver.
PGOOD (Pin 15)
Power good. This pin provides a logic-high signal when the
microprocessor CORE voltage (VSEN pin) is within specified
limits and Soft-Start has timed out.
V
Bias supply. Connect this pin to a 5V supply.
CC
(Pin 16)
MICROPROCESSOR
December 27, 2004
FN4766.3