Datasheet

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1.6-MHz
Oscillator
D
S
VFB
1.146 V
Comparator
GM Amplifier
Sawtooth
Generator
VFB
1.146 V
D
S
D
S
D
S
D
S
Vref
1.213 V
Vin
SUP
~1 V
D
S
SUP
SUP
D
S
D
S
SUP
C1−
C1+
Vo3
C2+
C2−
D
S
Vref
1.214 V
Soft Start
Vref
1.213 V
SUP
ENR BASE
FB4
REF
FB2
DRV
COMP
FB1
VIN
SW SW
FB3
VCOM
VCOMIN GND PGND PGND
Q1
Q3
Q4
Q5
Q6
Q7
D
S
D
S
Q8
Q9
Q10
Q11
Q12
SUP
EN
VCOM
Buffer
Linear
Regulator
Controller
Reference
Output
Negative
Charge Pump
Positive
Charge Pump
Main boost
converter
Vref
0 V
D1
D4
D2
D3
Disable
GM Amplifier
Low Gain
FB1
FB2
FB3
D S
Q2
SUP
Bias V
ref
= 1.213 V
Thermal Shutdown
Start-Up Sequencing
Undervoltage Detection
Short-Circuit Protection
Current Limit
and
Soft Start
Control Logic
Gate Drive Circuit
SUP
(V
O
)
Current
Control
Gain Select
(Doubler or
Tripple Mode)
Soft Start
I
ref
= 20 mA
Short Circuit
Detect
Soft Start
Current
Control
Soft Start
TPS65100 , TPS65101
TPS65105
SLVS496C – SEPTEMBER 2003 – REVISED APRIL 2006
FUNCTIONAL BLOCK DIAGRAM
7
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