S1F75510 Epson Electronics America, Inc., S1F75510 Datasheet - Page 12

• Manufacturer Part Number: S1F75510
• Description: Charge-pump Dc/dc Converter & Voltage Regulator
• Manufacturer: Epson Electronics America, Inc.

S1F75510
12
The 3 boosting circuit in the positive direction generates the V
voltage for the gate driver. It makes 3 boosting in the positive direction of the potential difference occurring
between the V
through the V
The theoretical equation (output voltage value under the idealistic non-load state) for the V
follows:
Actually, when a load is connected to the V
equation indicated below.
It means that the V
To acquire desired output voltage, use the IC within the range of the specified load (Refer to “Mode changeover
circuit ”).
The 3 boosting circuit in the negative direction generates the V
supply voltage for the gate driver. It makes 3 boosting in the negative direction of the potential difference
occurring between the V
ing, to output through the V
The theoretical equation (output voltage value under the idealistic non-load state) for the V
follows:
Actually, when a load is connected to the V
equation indicated below.
It means that the V
To acquire desired output voltage, use the IC within the range of the specified load (Refer to “Mode changeover
circuit ”).
3 boosting circuit in the positive direction
3 boosting circuit in the negative direction
V
V
V
V
OUT3
OUT3
OUT4
OUT4
RV
IV
RV
IV
OUT3
OUT4
= (V
= (V
= (V
= (V
OUT3
OUT4
OUT2
OUT2
OUT2
OUT2
: Load current
: Load current
OUT3
OUT2
: Output impedance of the 3 boosting circuit in the positive direction
: Output impedance of the 3 boosting circuit in the negative direction
– V
– V
– V
– V
pin.
OUT3
OUT4
– V
SS
SS
SS
SS
SS
OUT2
)
)
voltage will drop by the load.
)
)
voltage will drop by the load.
using the V
OUT4
3
3 – (RV
(–2) (The voltage value using the V
(–2) – (RV
– V
SS
pin.
OUT3
using the V
SS
OUT4
potential as the reference voltage, by charge pump boosting, to output
IV
OUT3
OUT4
OUT3
IV
OUT2
OUT4
, the output voltage will drop to the value represented by the
, the output voltage will drop to the value represented by the
)
potential as the reference voltage, by charge pump boost-
)
OUT3
SS
OUT3
potential as the reference voltage)
output voltage, means the positive supply
output voltage, means the negative
OUT3
OUT4
becomes as
becomes as
Rev. 1.1