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参数资料
| 型号： | ISL6144EVAL1Z |
| 厂商： | Intersil |
| 文件页数： | 18/30页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD ISL6144 ORING |
| 标准包装： | 1 |
| 主要目的： | 电源管理，O 环控制器/负荷分载 |
| 已用 IC / 零件： | ISL6144 |
| 已供物品： | 板 |
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ISL6144
hold off and other internal bias and reference circuitry. The
charge pump circuitry starts functioning as the input voltage
at the V IN pin reaches a value around 8V. The gate voltage
depends on the load current (as explained in previous
sections), The maximum gate voltage will be clamped to a
maximum of V GQP when load current becomes too high to
be handled with 20mV across the source-drain terminals.
Overall, it takes less than 1ms to reach the load-dependent
final gate voltage value. Note that the Input voltage cannot
be hot swapped and has to rise slowly. A rise time of at least
1ms is recommended for the voltage at VIN pin.
V IN = 48V; RESISTIVE LOAD = 4A, C GSEXT = 33n F
V IN1 , V G1 ,I IN1 and HV REF(VZ) WAVEFORMS
V IN = 12V; RESISTIVE LOAD = 5A, C GSEXT = 33nF
I IN1
5A/DIV
V G1
5V/DIV
V IN1
5V/DIV
V OUT
5V/DIV
HV REF(Vz)
5V/DIV
I IN1
2A/DIV
4A
0A
V G1
10V/DIV
V IN1
10V/DIV
FIGURE 19. FIRST FEED V IN1 START-UP (12V CASE)
The start-up tests were done with the addition of an external
gate to source capacitor to demonstrate start-up time with a
total equivalent gate-source capacitance around 39nF.
SECOND (CONSECUTIVE) FEED START-UP
WHEN V IN REACHES ~ 8V AND HVREF REACHES
3V to 4V, GATE CHARGE PUMP ACTION STARTS
V IN1 , V G1 , I IN1 and V OUT WAVEFORMS
In this case, the ISL6144 for the second (consecutive) feed
(U4) already has output bias voltage as the first parallel feed
has been turned on and V OUT is present on the common bus.
As V IN2 rises, V G2 rises with it (V G2 is GATE2 voltage with
respect to GND). When V IN2 approaches V IN1 value, Gate 2 is
turned. Second feed gate turn-on is faster than the first feed as
the HVREF capacitor (C 3 ) is already charged.The second or
consecutive power supply to be started can be turned on faster
0A
I IN1
5A/DIV
4A
than the first power supply, a rise time of at least 200μs of the
second rail is recommended.
V IN = 48V; RESISTIVE LOAD = 4A, C GS(EXT) = 33n F
V OUT
20V/DIV
I IN2
2A/DIV
V OUT
20V/DIV
V G1
20V/DIV
V IN1
20V/DIV
IN THIS CASE GATE VOLTAGE IS MEASURED
BETWEEN GATE2 AND GND
WHEN V IN REACHES ~ 8V
AND HVREF REACHES 3V TO 4V
GATE CHARGE PUMP ACTION STARTS
FIGURE 18. FIRST FEED V IN1 START-UP (48V CASE)
SECOND GATE TURNS ON ONLY
WHEN V IN2 REACHES V IN1
POWER SUPPLY
RELATED DELAY
V G2
20V/DIV
V IN2
20V/DIV
FIGURE 20. SECOND (CONSECUTIVE) FEED V IN2 START-UP
18
FN9131.7
October 6, 2011
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| ISL6144IRZA | 功能描述:热插拔功率分布 W/ANNEAL 20LD 5X5 QF N ORING FET CONTRLR 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 |
| ISL6144IRZA-T | 功能描述:IC CTRLR MOSFET HV ORING 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:- 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
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