Datasheet

1
2
Ramp Generator
13
10
14
N-channel
Driver
12
9
1115
4
5
BP10
BP10
7
16
3-bit up/down
Fault Counter
7
Fault
CLK
7
CLK
3 7
BP5
7
Restart
7
7
Fault
CL
S Q
QR
7
CLK
CL
SW
7
SW
S Q
QR
7
HDRV
LDRV
PGND
BOOST
BP10
VIN
SYNC
RT
KFF
BP5
VFB
ILIM
SGND
Zero Current Detector
(TPS40054 Only)
N-channel
Driver
10V Regulator
7
1V5REF
7
+
6
07VREF
7
7
Restart
SS/SD
8COMP
+
Overtemperature
+
Soft Start
CLK
Oscillator
7
7
7
07VREF
1V5REF
3V5REF
Reference
Voltages
7
BP5
UDG-08118
t
START
TPS40054
TPS40055
TPS40057
SLUS593H –DECEMBER 2003–REVISED JULY 2012 www.ti.com
SIMPLIFIED BLOCK DIAGRAM
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