ncp5215 ON Semiconductor, ncp5215 Datasheet - Page 3

• Manufacturer Part Number: ncp5215
• Description: Dual Synchronous Buck Controller For Notebook
• Manufacturer: ON Semiconductor

PIN FUNCTION DESCRIPTION
Pin No.
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
11
1
2
3
4
5
6
7
8
9
CS2- / Vo2
CS1- / Vo1
TRESET2
TRESET1
PGOOD1
PGOOD2
Symbol
COMP2
PGND2
FPWM#
PGND1
COMP1
VDRP2
VCCP2
VCCP1
VDRP1
AGND
SWN2
SWN1
ILMT2
ILMT1
FSET
VREF
CS2+
CS1+
BST2
BST1
INV2
INV1
VCC
EN1
EN2
TG2
BG2
BG1
TG1
SS1
SS2
FB2
FB1
Vin
Frequency SET Programmable pin of switching frequency for two channels.
VCC This pin powers the control section of IC.
Analog Ground Low noise ground for control section of IC.
Reference Voltage Output Internal 0.8 V reference output.
Power GOOD 1 Power good indicator of the output voltage of Channel 1. (Open drained)
Power GOOD 2 Power good indicator of the output voltage of Channel 2. (Open drained)
Enable 1 Enable logic input of Channel 1.
Enable 2 Enable logic input of Channel 2.
Soft-Start 1 Soft-starting programmable pin of Channel 1.
Soft Start 2 Soft-starting programmable pin of Channel 2.
Transient Response Enhancement SET 2 Channel 2 Transient-Response-Enhancement (TRE)
programmable pin.
COMP2 Output of the error amplifier of Channel 2.
Inverting Input 2 Error amplifier's inverting input pin of Channel 2.
Feedback 2 Output voltage feedback of Channel 2.
Voltage Droop 2 Channel 2 voltage droop output to the compensation. This pin is used to program the
adaptive-voltage-position (AVP) function for Channel 2.
Current Limit 2 Current limit programmable pin of Channel 2.
Current Sense 2- Channel 2 inductor current differential sense inverting input.
Current Sense 2+ Channel 2 inductor current differential sense non-inverting input.
Switch Node 2 Switch node between the top MOSFET and bottom MOSFET of Channel 2.
Top Gate 2 Gate driver output of the top N-Channel MOSFET for Channel 2.
BOOTSTRAP Connection 2 Channel 2 top gate driver input supply, a bootstrap capacitor connection
between SWN2 and this pin.
VCC Power 2 This pin powers the bottom gate driver of Channel 2.
Bottom Gate 2 Gate driver output of the bottom N-Channel MOSFET for Channel 2.
Power Ground 2 Ground reference and high-current return path for the bottom gate driver of Channel 2.
Forced PWM Forced PWM enable logic input. Low to enable forced PWM mode and disable power-saving
mode for both channels.
Vin Input voltage monitor input.
Power Ground 1 Ground reference and high-current return path for the bottom gate driver of Channel 1.
Bottom Gate 1 Gate driver output of the bottom N-Channel MOSFET for Channel 1.
VCC Power 1 This pin powers the bottom gate driver of Channel 1.
BOOTSTRAP Connection 1 Channel 1 top gate driver input supply, a bootstrap capacitor connection
between SWN1 and this pin.
Top Gate 1 Gate driver output of the top N-Channel MOSFET for Channel 1.
Switch Node 1 Switch node between the top MOSFET and bottom MOSFET of Channel 1.
Current Sense 1+ Channel 1 inductor current differential sense non-inverting input.
Current Sense 1- Channel 1 inductor current differential sense inverting input.
Current Limit 1 Current limit programmable pin of Channel 1.
Voltage Droop 1 Channel 1 voltage droop output to the compensation. This pin is used to program the
Adaptive-Voltage-Position (AVP) function for Channel 1.
Feedback 1 Output voltage feedback of Channel 1.
Inverting Input 1 Error amplifier's inverting input pin of Channel 1.
COMP1 Output of the error amplifier of Channel 1.
Transient Response Enhancement SET 1 Channel 1 Transient-Response-Enhancement (TRE)
program pin.
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NCP5215
3
Description