TA76L431FB

2007-01-31

4

Precaution on Application

drift in the electrical characteristic due to a rise in the junction temperature of the chip may be disregarded.

over the rated temperature range (Ta

= 0 to 70°C).

Application Circuit Example

Error amplification circuit for switching power supply

This circuit amplifies the difference between the switching power supply’s secondary output voltage and the

shunt regulator’s reference voltage. It then feeds the amplified voltage back to the primary input voltage via the

photocoupler.

()

C

ppm

Ta

C

@25

V

10

V

V

REF

6

(dev)

REF

REF

°

Δ

⎟⎟

⎟

⎠

⎞

⎜⎜

⎜

⎝

⎛

°

×

=

α

min

max

ΔTa

Photo-

coupler

GND

Shunt regulator