ISL62882HRTZ-T Intersil, ISL62882HRTZ-T Datasheet - Page 26

• Manufacturer Part Number: ISL62882HRTZ-T
• Description: IC REG PWM 2PHASE BUCK 40TQFN
• Manufacturer: Intersil

Specifications of ISL62882HRTZ-T

• Applications: Controller, Intel IMVP-6.5™
• Voltage - Input: 5 V ~ 25 V
• Number Of Outputs: 1
• Voltage - Output: 0.0125 V ~ 1.5 V
• Operating Temperature: -10°C ~ 100°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Compensation & Current Sensing Network Design for Intersil Multiphase R^3 Regulators for IMVP-6.5
Jia Wei, [e-mail], 919-405-3605
Attention: 1. "Analysis ToolPak" Add-in is required. To turn on, go to Tools--Add-Ins, and check "Analysis ToolPak".
Changing the settings in red requires deep understanding of control loop design
Tune K i to get the desired loop gain bandwidth
Capacitance of Each Output Ceramic Capacitor:
Capacitance of Each Output Bulk Capacitor:



(This sets the over-current protection level)






(

 
2. Green cells require user input
ESR of Each Output Ceramic Capacitor:
ESL of Each Output Ceramic Capacitor:
Desired ISUM- Pin Current at Full Load:

Place the 2nd compensator pole fp2 at:
Number of Output Ceramic Capacitors:
(
Tune the compensator gain factor K i:

ESR of Each Output Bulk Capacitor:
(Recommended K i range is 0.8~2)
ESL of Each Output Bulk Capacitor:
Number of Output Bulk Capacitors:
Estimated Full-Load Efficiency:
(
(
Desired Load-Line Slope:
CPU Socket Resistance:
Loop Gain, Phase Curve
Controller Part Number:
Inductance Per Phase:
Loop Gain, Gain Curve
Switching Frequency:
(
Full Load Current:
)UHTXHQF\ +]
)UHTXHQF\ +]
(
Operation Parameters
Phase Number:
(
(
Vin:
Vo:
FIGURE 27. SCREENSHOT OF THE COMPENSATOR DESIGN SPREADSHEET
(
(
1.15
0.36
33.1
1.15
470
300
4.5
0.6
0.9
1.9
1.9
12
50
87
30
10
7 V
7 V
2
3
3
3
7 V
7 V
xfs
(
(
:
:
:
:
(Switching Frequency)
Recommended Value
T1 Phase Margin:
(










 


R1
R2
R3
C1
C2
C3
(
T1 Bandwidth:

Use User-Selected Value (Y/N)?
387.248
188.980
498.514
32.245
(
2.870
0.560
(
Output Impedance, Phase Curve
Output Impedance, Gain Curve
Compensator Parameters
190kHz
63.4°
:
:
:
Performance and Stability
(
)UHTXHQF\ +]
(
)UHTXHQF\ +]
(
(
T2 Phase Margin:
Z
User-Selected Value
T2 Bandwidth:
˜
˜
R1
R2
R3
C1
C2
C3
Z
§
¨
¨
©

˜
§
¨ ¨
©
S
(

(
0.562
S
2.87
·
¸
¸
¹
412
150
390
˜
32
§
¨
¨
©
·
˜ ¸ ¸
¹

§
¨ ¨
©
52kHz
94.7°
:
:
:
(
(

S
S
·
¸
¸
¹
·
¸ ¸
¹
Recommended Value
Current Sensing Network Parameters
Inductor DCR
Cn
Ri
1014.245
Rsum
Rntcs
0.294
Operation Parameters
Rntc
Rp
:
0.88
3.65
2.61
10
11
:
:
:
:
:
User Selected Value
Cn
Ri
0.294
1000
: