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AN2833 Scheda tecnica(PDF) 25 Page - STMicroelectronics

Il numero della parte AN2833
Spiegazioni elettronici  Dual step-down controller with auxiliary voltages for industrial system power
PDF  32 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2833 Scheda tecnica(HTML) 25 Page - STMicroelectronics

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AN2833
Test setup and performance summary
25/32
Figure 19.
Device current consumption vs. input voltage
11.6
Switching frequency vs. load current
Figure 20 and 21 show the switching frequency variation with the load current in PWM
mode, skip mode and non-audible skip mode. 12 V is applied at VIN+ and VIN- test points.
Figure 20.
3.3 V output switching frequency vs. load current
AM01454v1
Standby mode input battery current
vs input voltage
240
260
280
300
320
340
360
380
8
10
12
14
16
18
20
22
24
26
2830
32
34
36
Input voltage [V]
AM01455v1
OUT1=3.3 V switching frequency
0
50
100
150
200
250
0.01
0.10
1.00
10.00
SKIP @ 12 V
SKIP @ 24 V
SKIP @ 32 V
NO aud. SKIP @ 12 V
NO aud. SKIP @ 24 V
NO aud. SKIP @ 32 V
PWM @ 12 V
PWM @ 24 V
PWM @ 32 V
current [A]
Load



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