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参数资料
| 型号： | ISL6174IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 12/16页 |
| 文件大小： | 346K |
| 描述： | IC CIRC BREAKER DUAL LV 28-QFN |
| 标准包装： | 6,000 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 2.25 V ~ 3.63 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN 裸露焊盘（5x5） |
| 包装： | 带卷 (TR) |
12
FN6830.0
December 19, 2008
Pins SS1 and SS2 of the IC are available as jumper test
points so that they can be tied together to achieve
concurrent tracking between Vo1 and Vo2. Both the EN
inputs must be turned on together to check this function,
jumpers are provide to facilitate this.
Each channel is preloaded with the resistive load that makes
up the UV threshold level. Additional loading can be
externally applied as desired.
The internal Circuit Breaker amplifier is fast enough to
respond to very fast di/dt events.
On this board, the timeout capacitor value for side 1 is
0.15礔, which corresponds to a timeout period of 17.67ms.
The scope shots are taken from the ISL6174EVAL1 to
demonstrate the ISL6174s critical operational waveforms.
Figure 18 illustrates the circuit breaker operation which will
be evident with a slow ramping output current at the
programmed 2.2A level, I
CB
. This mode of operation will be
invoked while the OC event is < ~2X the I
CB
. as shown in
Figure 19. Characteristic of this operational mode is the TCB
pin ramping to V
CB
to establish the circuit breaker delay.
The way to confirm WOC mode, is by looking at the TCB pin
waveform. If no ramping is seen prior to GATE turn off, then
WOC is active. The following waveform in Figure 20 shows
WOC operation:
:
Figure 21 is a 200X zoom of a WOC turn-off event and
clearly illustrates the lack of any TCB ramping during this
WOC event.
FIGURE 18. SLOW RAMPING TO 2.2A OC CIRCUIT BREAKER
OPERATION
TCB
Iin
GATE
FIGURE 19. TRANSIENT TO 3.9A OC CIRCUIT BREAKER
OPERATION
GATE
TCB
Iin
FIGURE 20. WOC CIRCUIT BREAKER OPERATION
GATE
TCB
Iin
ISL6174
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相关代理商/技术参数 |
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| ISL617XEVAL1Z | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Dual Low Voltage Circuit Breaker |
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| ISL61851ACBZ | 功能描述:热插拔功率分布 DL USB HOTSWAP W/INT FET-EN HI 8LD RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| ISL61851ACBZ-T | 功能描述:热插拔功率分布 DL USB HOTSWAP W/INT FET-EN HI 8LD RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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