L6731D STMicroelectronics, L6731D Datasheet - Page 20
L6731D
Manufacturer Part Number
L6731D
Description
IC CTRLR ADJ STPDN SYNC 16-TSSOP
Manufacturer
STMicroelectronics
Datasheet
1.L6731DTR.pdf
(23 pages)
Specifications of L6731D
Applications
Controller, DDR
Voltage - Input
1.8 ~ 14 V
Number Of Outputs
1
Voltage - Output
Adjustable down to 0.6V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
Output Voltage
0.6 V to 18 V
Output Current
30 A
Input Voltage
1.8 V to 14 V
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Package
HTSSOP16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Application details
20/23
Equation 12
Equation 13
Equation 14
Equation 15
Figure 12. Asymptotic bode plot of converter's open loop gain
●
Compensation network design:
–
–
–
–
–
–
Put the gain R
Place
Place
Place
Place
Check the loop gain considering the error amplifier open loop gain.
ω
ω
ω
ω
Z1
Z2
P1
P2
before the output filter resonance
at the output filter resonance
at the output capacitor ESR zero
at one half of the switching frequency;
ϖ
5
/R
ω
C
Z
3
=
2
ω
ω
in order to obtain the desired converter bandwidth
=
R
R
Z
P
1
2
5
3
C
=
=
⋅
20
∆
R
R
⋅
Vin
Vosc
5
(
4
R
1
⋅
⋅
1
1
C
C
3
19
+
20
⋅
ϖ
R
4
LC
)
ω
LC
;
ω
ω
ESR
LC
;
;
L6731D