Datasheet

VIN 9 V to 15 V
D1
VIN SW
FB
GND
CTRL
COMP
C3
220
nF
TPS 61170
ON /OFF
DIMMING
CONTROL
L1
10 Hm
R1
87.6 kW
C1
4.7 Fm
VOUT 12 V/ 300 mA
C4
1 Fm
C2
4.7 Fm
L2
10 Hm
R2
10 kW
L1: TOKO#A915_Y-100M
C1: Murata GRM21BR61E475K
C2: Murata GRM21BR61E475K
D1:
ONsemi MBR0540T1
*L1, L2 can be replaced by 1:1 transformer
VIN SW
FB
GND
CTRL
COMP
10 nF
TPS61170
L1: TOKO B1000AS-220M
C1: Murata GRM21BR61E475K
C2: Murata GRM21BR71H105K
C3, C4: Murata GRM32ER71H475K
D1 – D3: B140
10k
D1
D2
Vo = 1.23 x (R1+R2)/ R2;
D3
VIN 4.5 V to 15 V
C1
4.7 Fm
L1
22 Hm
C2
1 Fm
C3
4.7 Fm
C4
4.7 Fm
R2
10 kW
V
48 V/60 mA
O
R1
380 kW
TPS61170
SLVS789C – NOVEMBER 2007– REVISED APRIL 2011 www.ti.com
Figure 21. 12V SEPIC (Buck-Boost) Converter
Figure 22. 48V Phantom Power Application Circuit
20 Copyright © 2007–2011, Texas Instruments Incorporated