l6995 STMicroelectronics, l6995 Datasheet - Page 19

• Manufacturer Part Number: l6995
• Description: Step Down Controller For High Differential Input-output Conversion
• Manufacturer: STMicroelectronics

3.9.1 Efficiency
V
Figure 12. Efficiency vs output current
3.10 5A demo Board
Figure 13. Schematic Diagram
IN
= 20V V
OUT
TP2
TP1
R9
R5
SD
= 1.25V F
R8
Ef f [ %]
8 5
8 0
7 5
7 0
6 5
6 0
C9
R10
0,0
C11
C12
SW
V in=2 0V V out=1.25 V Fsw =220 Khz PFM
C10
= 270KHz
R7
PGOOD
OVP
ILIM
SS
SHDN
4 ,0
L6995
U1
GNDSENSE
VSENSE
R4
NOSKIP
HGATE
OSC
PHASE
LGATE
C8
PGND
VREF
BOOT
GND
VFB
8 ,0
INT
C6
C5
R6
Cu r r e n t [A]
TP3
12,0
NOINT
Q1
Q2
NOINT
C4
INT
D2
C2
V in=20 V V o ut=1 .25V Fs w =2 20K h z PW M
C7,C13
16 ,0
R1
D1
C1
NS
Cn
L1
INT
C3
Rn
20,0
C14,C15
GNDin
Vcc
VIin
24,0
J1
GNDOUT
VOUT
R3
R2
L6995
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