UPC1934 Просмотр технического описания (PDF) - NEC => Renesas Technology

Номер в каталоге

Компоненты Описание

Список матч

UPC1934

DC-DC CONVERTER CONTROL IC

NEC => Renesas Technology 

µ PC1934

3. NOTES ON USE

3.1 Setting the Output Voltage

Figure 3-1 illustrates the method of setting the output voltage. The output voltage is obtained using the formula shown in

the figure.

The common mode input voltage range of the error amplifier is 0 to 0.4 V (TYP.) for both the error amplifiers, E/A1 and

E/A2. Therefore, select a resistor value that gives this voltage range.

Figure 3-1 Setting the Output Voltage

(1) When setting a positive output voltage using error amplifier E/A1.

VOUT (positive voltage)

VOUT =

1 + R1

R2

•

R4

R3 + R4

•

VREF

R1

16 VREF

4

CNF

R3

R2

3

R4

RNF

5

E/A1

(2) When setting a negative output voltage using error amplifier E/A2.

R1

R2

R3

R4

16 VREF

13

CNF

14

RNF

12

E/A2

VOUT (negative voltage)

VOUT = R1R4−R2R3 • VREF

R1 (R3+R4)

12

Data Sheet G13567EJ3V0DS00

Share Link: