HA17524P Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HA17524P

Switching Regulator Controller

Hitachi -> Renesas Electronics 

HA17524P/FP

Operating Waveforms

Figure 9 shows operating waveforms at every part, when stepdown voltage type chopper switching

regulator (figure 8) is used. Operating condition are as follows: f = 20 kHz, VOUT = 5 V. At the output

section, two channels are connected in parallel. Operating waveforms inside the IC are also shown.

HA17524

VCC 15 V

5 kΩ

5 kΩ

5 kΩ

0.1 µF

6 kΩ

0.01 µF

5

k

Ω

(1)

(15)

Inv

VCC

E1(11)

(2) Non Inv C1(12)

(16)Ref

C 2(13)

(6) RT

E2(14)

(7) C T

+CL (4)

(10)SDhouwtn –CL (5)

Osc Out (3)

Comp (9)

(8) GND

Q (A) L

D

3 kΩ

0.001 µF

50 k Ω

RS

VOUT

5V

C

Figure 8 Stepdown Voltage Type Chopper Switching Regulator

7

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