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參數(shù)資料
| 型號： | HA16116FP |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | FPGA |
| 英文描述： | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
| 中文描述： | 開關(guān)穩(wěn)壓器的斬波式直流/直流轉(zhuǎn)換器 |
| 文件頁數(shù)： | 13/34頁 |
| 文件大?。?/td> | 250K |
| 代理商： | HA16116FP |
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HA16116FP/FPJ, HA16121FP/FPJ
13
4. Totem Pole Output Stage Circuit and Power MOS FET Driving Method
The output stage of this IC series is configured of totem pole circuits, allowing direct connection to a power
MOS FET as an external switching device, so long as V
IN
is below the gate breakdown voltage.
If there is a possibility that V
IN
will exceed the gate breakdown voltage of the power MOS FET, a Zener
diode circuit like that shown figure 4.1 or other protective measures should be used. The figure 4.1 shows
an example using a P-channel power MOS FET.
Bias
circuit
P.V
IN
V
O
OUT
Zener diode for
gate protection
Drive circuit
Gate
protection
resistor
E.g.: V = 18 V
Schottky
barrier diode
+
Figure 4.1 P-channel Power MOS FET (example)
5. Vref Undervoltage Error Prevention (UVL) and Overvoltage Protection (OVP) Functions
5.1 Operation Principles
The reference voltage circuit is equipped with UVL and OVP functions.
UVL
In normal operation the Vref output voltage is fixed at 2.5 V. If V
IN
is lower than normal, the UVL
circuit detects the Vref output voltage with a hysteresis of 1.7 V and 2.0 V, and shuts off the PWM
output if Vref falls below this level, in order to prevent malfunction.
OVP
The OVP circuit protects the IC from inadvertent application of a high voltage from outside, such as if
V
IN
is shorted. A Zener diode (5.6 V) and resistor are used between Vref and GND for overvoltage
detection. PWM output is shut off if Vref exceeds approximately 7.0 V.
Note that the PWM output pulse logic and the precision of the switching regulator output voltage are not
guaranteed at an applied voltage of 2.5 V to 7 V.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA16116FPJ | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| HA16129FPJ | Single Watchdog Timer |
| HA16129 | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
| HA16129AFPJ | Regarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp. |
| HA16138 | AC/DC Switching Converter Controller IC With High-Voltage Power MOS FET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA16116FP/FPJ/ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HA16116FP/FPJ/ HA16121FP/FPJ Datasheet 443K/SEP.18.03 |
| HA16116FP-E | 制造商:Renesas Electronics 功能描述:DC DC Cntrlr Dual-OUT PWM DC to DC Controller/Step Down 20-Pin SOP Bulk |
| HA16116FPJ | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Switching Regulator for Chopper Type DC/DC Converter |
| HA16117 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS Watchdog Timer |
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