STBB2 Datasheet, PDF (4/25 Pages) STMicroelectronics – 800 mA 2.5 MHz, high efficiency dual mode buck-boost DC-DC converter

Block diagram
2
Block diagram
Figure 3. Block diagram adjustable
SW1
SW2
VIN
VOUT
VINA1
STBB2
FB
GND
Σ
OSC
Gate
driver
DMD
-
EA
+
VREF and
Soft-start
VSUM
COMP 1
Burst
control 1
Level shift
LOGIC
CONTROL
OSC
-
UVLO
SHUT
DOWN
OTP
OSC
Burst
control 2
DMD
VSEL
BP
DEVICE
CONTROL
VINA
EN
MODE
BP
VSEL
AM10455v1
Figure 4. Block diagram fixed
SW1
SW2
VIN
VOUT
VINA1
FB
VSEL
BP
Σ
OSC
VSUM
COMP 1
GND
-
EA
+
VREF and
Soft-start
Burst
Control 1
Level shift
Burst
control 2
Gate
driver
DMD
LOGIC
CONTROL
UVLO
SHUT
DOWN
OSC
OTP
OSC
DMD
VSEL
BP
DEVICE
CONTROL
VINA
EN
MODE
BP
VSEL
AM10456v1
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DocID022745 Rev 9