cs5301 ON Semiconductor, cs5301 Datasheet - Page 9

• Manufacturer Part Number: cs5301
• Description: Three-phase Buck Controller With Integrated Gate Drivers And Power Good
• Manufacturer: ON Semiconductor

PACKAGE PIN DESCRIPTION
PACKAGE PIN #
9−13
4−6
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
7
8
PIN SYMBOL
CS1−CS3
V
PWRGDS
Gate(H)3
Gate(H)2
Gate(H)1
Gate(L)3
Gate(L)2
Gate(L)1
PWRGD
V
V
COMP
CS
ID4
V
LGND
GND3
GND2
GND1
V
R
V
V
REF
CCH12
CCL23
V
I
CCH3
CCL1
DRP
LIM
OSC
CCL
−V
FB
REF
ID0
Output of the error amplifier and input for the PWM comparators.
Voltage Feedback Pin. To use Adaptive Voltage Positioning (AVP) select an
offset voltage at light load and connect a resistor between V
input bias current of the V
offset for zero output current. Short V
Current sense output for AVP. The offset of this pin above the DAC voltage is
proportional to the output current. Connect a resistor from this pin to V
amount AVP or leave this pin open for no AVP.
Current sense inputs. Connect current sense network for the corresponding
phase to each input.
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
value of the resistors connected to the CSx pins.
Power Good Output. Open collector output goes low when CS
regulation.
Voltage ID DAC inputs. These pins are internally pulled up to 3.3 V if left open.
Power Good Sense. Connect to Output.
Sets threshold for current limit. Connect to reference through a resistive divider.
Reference output. Decouple with 0.1 mF to LGND.
Return for internal control circuits and IC substrate connection.
Power for GATE(H)3.
High side driver #3.
Return for #3 drivers.
Low side driver #3.
Power for GATE(L)2 and GATE(L)3.
Low side driver #2.
Return for #2 driver.
High side driver #2.
Power for GATE(H)1 and GATE(H)2. UVLO Sense for High Side Driver supply
connects to this pin.
High side driver #1.
Return #1 drivers.
Low side driver #1.
Power for GATE(L)1.
Power for internal control circuits and UVLO Sense for Logic.
A resistor from this pin to ground sets operating frequency and V
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CS5301
9
REF
and the output voltage. The value should be 1/3 of the
FB
pin and the resistor value determine output voltage
FUNCTION
FB
to V
OUT
for no AVP.
FB
REF
and V
FB
is out of
bias current.
OUT
FB
. The
to set