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參數(shù)資料
| 型號： | TDA16831 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.4 A SWITCHING REGULATOR, 110 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 614K |
| 代理商： | TDA16831 |
TDA 16831-4
Circuit Description
Version 2.0
11
8 Aug 2002
Logic (logpwm)
The logic logpwm comprises a RS-flip-flop and a NAND-gate. The NAND-gate insures
that CoolMOS transistor is only switched on when sosta is on and pwmin has exceeded
minimum threshold and pwmin is below pwmrmp and currentshutdown is off and
tempshutdown is off and tff sets the starting impulse. CoolMOS transistor is switched off
when pwmrmp exceeds pwmin or duty cycle exceeds 0.5 or pwmcs exceeds
I
max or
silicon temperature exceeds
T
max or uvlo is going below threshold. The RS-flip-flop
ensures that with every frequency period only one switch on can occur (double pulse
suppression).
Gate Drive (gtdrv)
Gtdrv is the driver circuit for the CoolMOS and is optimized to minimize EMI influences
and to provide high circuit efficiency. This is done by smoothing the switch on slope when
reaching the CoolMOS threshold. Leading switch on spike is minimized then. When
CoolMOS is witched off, the falling slope of the gate driver is slowed down when reaching
2 V. So an overshoot below ground can't occur. Also gate drive circuit is designed to
eliminate cross conduction of the output stage.
Current Shut Down (cssd)
Current shut down circuit switches the CoolMOS immediately off when the sense current
is exceeding an internal threshold of 100 mV at
R
sense.
Tempshutdown (tsd)
Tempshutdown switches the CoolMOS off when junction temperature of the PWM
controller is exceeding an internal threshold.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA16831-4 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Off-line SMPS Controller with 600 V Sense CoolMOS on Board |
| TDA16831G | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Off-line SMPS Controller with 600 V Sense CoolMOS on Board |
| TDA16832 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Off-line SMPS Controller with 600 V Sense CoolMOS on Board |
| TDA16832-BOARD | 制造商:Infineon Technologies AG 功能描述: |
| TDA16832G | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Off-line SMPS Controller with 600 V Sense CoolMOS on Board |
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