- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370417 > HA16107FP (Hitachi,Ltd.) Isolated Flyback Switching Regulator with 9V Output PDF資料下載
參數(shù)資料
| 型號(hào)： | HA16107FP |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Isolated Flyback Switching Regulator with 9V Output |
| 中文描述： | 隔離反激式開關(guān)穩(wěn)壓9V輸出 |
| 文件頁數(shù)： | 10/38頁 |
| 文件大小： | 170K |
| 代理商： | HA16107FP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁
HA16107P/FP, HA16108P/FP
10
Vref Protection Functions: Overvoltage and Undervoltage
Vref overvoltage and undervoltage conditions are detected by the overvoltage detection circuit and UVL2
circuit. PWM output shuts down when Vref
≥
8 V. UVL2 detects undervoltage with hysteresis between
approximately 4 V and 5 V. PWM output also shuts down below these voltages. It follows that PWM
output will shut off whenever the Vref pin is shorted to the power supply (V
IN
) or ground (GND). PWM
output also shuts off when V
IN
is turned on or off.
The following diagram shows how these protection functions operate when power comes on and goes off
(Vref < 6.45 V), and when a high external voltage is applied to the Vref pin (Vref > 6.45 V).
PWM output shut-
down region
PWM output
operating region
Power-off,
or shorted
to ground
PWM
OUT
PWM output
shut-down region
Power-up
Shorted to
power supply
0
4 V 5 V
6.45 V 8 V
10 V
UVL2
Vref
OVP
Vref
1. Current-Limiter Circuit
The current limiter pin (CL) is connected to the emitter of an npn transistor, as shown in the block
diagram. The threshold voltage is 240 mV typ. The switching speed of this circuit is approximately
100 ns from detection of overcurrent to shut-down of PWM output. Switching speed increases with the
strength of the signal input to the CL pin.
Instead of simple pulse-by-pulse current limiting, in these ICs the current limiting circuit is linked to the
timer-and-latch or ON/OFF timer circuit, and also detects the degree of overcurrent. The overcurrent
value is determined from the point at which current limiting is triggered in the ON-duty cycle. With a
large overcurrent (causing current limiting to operate even at a small ON-duty), the IC automatically
shortens the timer time.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA16107P | Isolated Flyback Switching Regulator with 9V Output |
| HA16108FP | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
| HA16108P | 1500000 SYSTEM GATE 1.5 VOLT FPGA |
| HA16113 | Dual Watchdog Timers |
| HA16113FPJ | Dual Watchdog Timers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA16107FP-E | 制造商:Renesas Electronics 功能描述:PWM Switching Regulator 16-Pin SOP Bulk |
| HA16107P | 制造商:Hitachi 功能描述:Swithed-Mode Power Supply Controller, Voltage Mode Type, Bi-Polar, 16 Pin, Plastic, DIP |
| HA16107P-E | 制造商:Renesas Electronics Corporation 功能描述:Pwr management,SW Reg.Control |
| HA16108FP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:600kHz PWM Switching Regulator Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。