ncp4201 ON Semiconductor, ncp4201 Datasheet - Page 2

• Manufacturer Part Number: ncp4201
• Description: Ncp4201 Programmable Multi-phase Synchronous Buck Converter With Pmbus
• Manufacturer: ON Semiconductor

ILIMITFS
PWRGD
ALERT
FAULT
TRDET
COM
IREF
GND
EN
14
12
40
19
9
2
3
7
6
Undervoltage
Overvoltage
Threshold
Threshold
CSREF
COMPARATOR
850mV
REGISTERS
STATUS
DELAY
REFERENCE
PRECISION
FBRTN
13
–
+
–
+
–
+
–
+
Voltage
Threshold
SHUTDOWN
REGISTERS
LIMIT
UVLO
VID0
Figure 1. Simplified Block Diagram
38
VID1
DIGITAL CONFIG
37
REGISTERS
& VALUE
VID2
NCP4201
36
http://onsemi.com
ADC
PMBUS
VID3
SCL SDA
35
CONTROL
VID DAC
5
VID4
CONTROL
2
34
4
VID5
33
CONTROL
OSCILLATOR
RT
BALANCING
10
CURRENT
CIRCUIT
VID6
32
RAMPADJ
MEASUREMENT
CONTROL
AND LIMIT
CURRENT
11
VID7
31
CONTROL
–
+
CROWBAR
REGULATOR
+
–
+
–
+
–
+
–
CMP
CMP
CMP
CMP
SHUNT
VCC
30
–
+
SOFT START CONTROL
+
–
BOOT VOLTAGE &
RESET
RESET
RESET
RESET
RESET
SET
2 / 3 / 4−PHASE
DRIVER LOGIC
REGULATOR
+
VCC3
–
3.3V
1
CURRENT
LIMIT
EN
39
20
25
18
16
17
21
26
24
23
22
15
29
28
27
8
ODN
PSI
OD1
PWM1
PWM2
PWM3
PWM4
SW1
SW2
SW3
SW4
CSCOM
P
CSREF
CSSUM
IMON
FB