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參數資料
| 型號： | STA5150 |
| 廠商： | 意法半導體 |
| 元件分類： | 音頻放大器 |
| 英文描述： | 200W MONO BASH POWER AMPLIFIER |
| 中文描述： | 功率200W單聲道BASH功放 |
| 文件頁數： | 10/14頁 |
| 文件大?。?/td> | 146K |
| 代理商： | STA5150 |
STA5150
10/14
Figure 3. Power Protection Block Diagram
In fig. 4 there is the power protection strategy pictures. Under the curve of the 64W power, the chip is in normal
operation, over 120W the chip is forced in Standby. This last status would be reached if the digital converter
does not respond quikly enough reducing the stress to less than 120W.
The fig.5 gives the protection current, Iprot, behavior. The current sourced by the pin Prot follows the formula:
for P
d
< P
d_av_th
the I
prot
= 0
Independently of the output voltage, the chip is also shut down in the folowing conditions:
When the currentthrough the sensing resistor, R
sense
, reaches 14A (Voltage drop (CD+) - (CD+1) = 700mV).
When the average junction temperature of the chip reaches 150°C.
When the ground potential differ from more than 5V from the half of the power supply voltage, ((CD+)-(CD-))/2
When the sum of the supply voltage
|
Vs+
| +
|Vs-| <20V
The output bridge is muted when the average junction temperature reaches 130°C.
X
V/I
ILOAD
I_PD
R
SENSE
MULTIPLIER
ILIM
CURRENT COMP
CURRENT COMP
OC1
PDP1
IPROT
TO TURN-ON/OFF
SEQUENCE
TO TURN-ON/OFF
SEQUENCE
TO PROT PAD
D01AU1282
IPDP
IPDA
IPD
IPD
V/I
OPA
OUTP
OUTP
OPA
CD-
CD+
CD+P
I
prot
P
-----------------------------------------------------------------
P
)
–
(
5 10
4
–
≡
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| STA516B_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:65-volt, 7.5-amp, quad power half bridge |
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