cs5323gdw20 ON Semiconductor, cs5323gdw20 Datasheet - Page 7

• Manufacturer Part Number: cs5323gdw20
• Description: Three-phase Buck Controller With 5-bit Dac
• Manufacturer: ON Semiconductor

20 Lead SO Wide
PACKAGE PIN #
11−15
17−19
5−7
10
16
20
1
2
3
4
8
9
PIN SYMBOL
VID0−VID4
CS1−CS3
GATE1−3
COMP
CS
R
V
REF
Gnd
V
PACKAGE PIN DESCRIPTION
V
I
LIM
OSC
DRP
CC
FB
REF
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7
A resistor from this pin to ground sets operating frequency
and V
Output of the error amplifier and input for the PWM
comparators.
Voltage Feedback Pin. To use Adaptive Positioning, set the
light load offset voltage by connecting a resistor between V
and CS
the offset. For no adaptive positioning connect V
CS
Current sense output for adaptive voltage positioning (AVP).
The level of this pin above the DAC voltage is proportional to
the output current. Connect a resistor from this pin to V
set AVP or leave this pin open for no AVP.
Current sense inputs. Connect current sense network for the
corresponding phase to each CSx pin.
Reference for Current Sense Amplifiers. To balance input
offset voltages between the inverting and noninverting inputs
of the Current Sense Amplifiers, connect a resistor between
CS
the value of the resistors connected to the CSx pins.
Sets the threshold for hiccup mode current limit. Connect to
reference through a resistive divider.
Reference output. Decouple with 0.1 μF.
Voltage ID DAC inputs. These pins are internally pulled up to
3.3 V if left open.
IC Gnd.
GATE drive signal.
Power for IC.
REF
REF
FB
.
and the output voltage. The value should be 1/3 of
REF
bias current.
. The resistor and the V
FUNCTION
FB
bias current determine
FB
directly to
FB
to
FB