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参数资料
| 型号： | ISL6553EVAL1 |
| 厂商： | Intersil |
| 文件页数： | 2/9页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD ISL6553 |
| 标准包装： | 1 |
| 系列： | Endura™ |
| 主要目的： | 特殊用途 DC/DC，VRM 电源 |
| 输出及类型： | 1，非隔离 |
| 功率 - 输出： | 45W |
| 输出电压： | 1.5V |
| 电流 - 输出： | 30A |
| 输入电压： | 5V，12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 350kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | HIP6601，ISL6553 |
Application Note AN9961
trigger the power-on-reset function of the ISL6553 and cause
the output power to cycle. A simple remedy is to connect a
5600 μ F or larger capacitor between VCC5 (J3) and ground
(J4). The capacitor, if necessary, simulates the distributed
capacitance that exists on a computer motherboard.
On-Board Load Transient Generator
Most bench-top electronic loads are not capable of emulating
the slew rates specified by Intel’s VRM 8.5 specification. For
this reason, a discrete load-transient generator is provided
on the evaluation board. See the schematic in Figure 1. The
load generator produces a load pulse of 100 μ s in duration
with a period of 6ms. The pulse magnitude is approximately
32A with rise and fall slew rates of approximately 210A/ μ s.
The short load current pulse and long duty cycle are required
to limit the power dissipation in the load resistors (R14, R15,
R16) and MOSFETs (Q6, Q7).
JP2
12VIN
C48
1 μ F
1.55V
Core Voltage, 50mV/div
Load Pulse, 12.5A/div
0A
20 μ s/div
FIGURE 2. TRANSIENT RESPONSE AND LOAD
GENERATOR PULSE
ISL6553EVAL1 Performance
Soft-Start Interval
R17
46.4k Ω
HIP2100
HS
VSS
HO
LO
Powered by a standard ATX power supply, the ISL6553
insures a controlled start-up of the converter.
ISL6553EVAL1 start-up into a 50m Ω load is shown in Figure
3. The soft-start interval is triggered by the release of the
FS/EN pin from ground potential. The converter output
R4
402 Ω
Q8
2N7002
C49
10 μ F
ON
OFF
SW1
voltage, VCORE, slowly ramps up to the full load set point of
1.455V. This controlled ramp of output voltage and supply
current reduces the strain on the 5V supply. The internal pull
down on the PGOOD pin is then released to provide an
indication that the output voltage is within regulation limits.
D1
R10
VCORE
Q7
HUF76129
Q6
HUF76129
BAV99LT1
D2
150 Ω
R11
71.5 Ω
R12
150 Ω
R13
0V
FS/DIS, 5V/div
VCORE, 0.5V/div
TP11
R14
0.1 Ω
R15
0.2 Ω
R16
0.1 Ω
BAV99LT1
71.5 Ω
0V
ICC5, 10A/div
FIGURE 1. LOAD TRANSIENT GENERATOR
If a slightly less severe transient is desired, the magnitude
and edge rates can be reduced by removing the HO/LI
jumper (JP2). The load generator then produces a 28.5A
magnitude transient with edge rates of 175A/ μ s. The load
generator is controlled by the switch labeled SW1.
0A
0V
PGOOD, 5V/div
2ms/div
FIGURE 3. SOFT-START INTERVAL WAVEFORMS
To engage the load generator simply place the switch
marked Transient (SW1) in the ON position. The resulting
load pulse and output voltage response is shown in Figure 2.
Further analysis of the converter’s response to the transient
generator load is given in the ISL6553EVAL1 Performance
section under the Transient Response sub-section.
2
Transient Response
The VRM 8.5 specification requires a DC-DC converter to
support loading at the processor socket pins over the range
of 19–28A with transient slew rates ranging from 159A/ μ s to
209.5A/ μ s. The on-board load generator simulates the
worse case of these conditions.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6554CB | 功能描述:IC PWM CORE VOLTAGE REG 20-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| ISL6554CB-T | 功能描述:IC PWM CORE VOLTAGE REG 20-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| ISL6554CB-TR5165 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| ISL6554CBZ | 功能描述:IC PWM CORE VOLTAGE REG 20-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| ISL6554CBZA | 功能描述:IC PWM CORE VOLTAGE REG 20-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
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