hip6303cbz-t Intersil Corporation, hip6303cbz-t Datasheet - Page 3

• Manufacturer Part Number: hip6303cbz-t
• Description: Microprocessor Core Voltage Regulator Multiphase Buck Pwm Controller
• Manufacturer: Intersil Corporation

Simplified Power System Diagram
Functional Pin Description
VID3 (Pin 1), VID2 (Pin 2), VID1 (Pin 3) and VID0
(Pin 4)
Voltage Identification inputs from microprocessor. These pins
respond to TTL and 3.3V logic signals. The HIP6303 decodes
VID bits to establish the output voltage. See Table 1.
EN (Pin 5)
Enable pin normal operation is with input open or high. A low
input disables the regulator and three states the PWM
outputs.
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
COMP
VSEN
VSEN
VID3
VID2
VID1
VID0
GND
EN
FB
HIP6303
10
1
2
3
4
5
6
7
8
9
VID
3
PWM 1
PWM 2
PWM 3
PWM 4
20
19
18
17
16
15
14
13
12
11
V
PGOOD
PWM4
ISEN4
ISEN1
PWM1
PWM2
ISEN2
ISEN3
PWM3
CC
RECTIFIED BUCK
RECTIFIED BUCK
RECTIFIED BUCK
RECTIFIED BUCK
SYNCHRONOUS
SYNCHRONOUS
SYNCHRONOUS
SYNCHRONOUS
HIP6303
CHANNEL
CHANNEL
CHANNEL
CHANNEL
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.
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.
PWM1 (Pin 15), PWM2 (Pin 14), PWM3 (Pin 11) and
PWM4 (Pin 18)
PWM outputs for each driven channel in use. Connect these
pins to the PWM input of a HIP6601/2/3 driver. For systems
which use 3 channels, connect PWM4 high. Two channel
systems connect PWM3 and PWM4 high.
ISEN1 (Pin 16), ISEN2 (Pin 13), ISEN3 (Pin 12) and
ISEN4 (Pin 17)
Current sense inputs from the individual converter channel’s
phase nodes. Unused sense lines MUST be left open.
PGOOD (Pin 19)
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 20)
SW
, select and disable. A resistor from
MICROPROCESSOR