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参数资料
| 型号： | PRD48BH480T200A00 |
| 厂商： | Vicor Corporation |
| 文件页数： | 18/19页 |
| 文件大小： | 0K |
| 描述： | HALF-CHIP REGULATOR EVAL BOARD |
| 标准包装： | 1 |
| 系列： | V-I Chip™, PRM™ |
| 主要目的： | DC/DC，步升/步降 |
| 输出及类型： | 1，非隔离 |
| 功率 - 输出： | 200W |
| 输出电压： | 5 ~ 55 V |
| 电流 - 输出： | 4.17A |
| 输入电压： | 8 ~ 55 V |
| 稳压器拓扑结构： | 降压-升压 |
| 频率 - 开关： | 1MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | PRM48BH480T200A |
| 其它名称： | 1102-1193 PRD48BH480T200A00-ND |
10.2 Current Limit Adjustment
The current limit set point is a function of the current sense amplifier gain, the shunt resistor, and
the internal current limit threshold of the PRM ? . The onboard current sense IC and shunt have a
typical combined gain of 400 mV/A. The gain of the current sense IC (Q 02 ) is fixed at 50 V/V, and
the IF current limit threshold is fixed at 2.0V. The current sense shunt (R 08 ) can be changed per
Equation 2 in order to adjust the current limit. Once the value has been calculated, obtain the
closest 1% standard value, size 2512 resistor and replace R 08 .
Equation 2
V IF_IL is the IF current limit threshold (2.0 V)
I LIMIT(SET) is the desired current limit set point
G CS is the current sense amplifier (Q O2 ) gain (50 V/V)
10.3 Trim Range Adjustment
The trim range is set by the reference voltage network shown below. The half-chip PRM-RS
Customer Board is nominally configured for a 20 V to 55 V trim range. Any operation outside of
the nominal trim range may require adjustments to the compensation.
Assuming local sense is implemented, the output voltage is defined by Equation 3. Referring to
Figure 17, the output of U 03 is 1.25 V. When R 22 is fully clockwise, the U 03 output voltage will be
applied directly to V REF resulting in the maximum reference voltage. This, in combination with the
voltage sense gain will determine the maximum output voltage. As R 22 is turned counter
clockwise, R 22 and R 42 form a divider which limits the minimum reference voltage.
In order to change the upper trim range, adjust the voltage sense gain (R 40 ) based on a maximum
reference voltage of 1.25 V. In order to change the lower trim range, use Equation 3 to determine
the minimum reference voltage required and adjust R 42 appropriately. Before making adjustments
to the trim range, refer to the data sheet to ensure that the device will operate outside of its
rated limits.
Equation 3
(local sense only)
UG:008
vicorpower.com
Applications Engineering: 800 927.9474
Page 18
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| PRD48BH480T200B00 | 功能描述:PRM48BH480T200B00 VI Chip? PRM? DC/DC, Step Up or Down 1, Non-Isolated Outputs Evaluation Board 制造商:vicor corporation 系列:VI Chip? PRM? 零件状态:有效 主要用途:DC/DC，步升/步降 输出和类型:1，非隔离 功率 - 输出:200W 电压 - 输出:48V 电流 - 输出:4.17A 电压 - 输入:38 V ~ 55 V 稳压器拓扑:降压-升压 频率 - 开关:1MHz 板类型:完全填充 所含物品:板 使用的 IC/零件:PRM48BH480T200B00 标准包装:1 |
| PRD-4AG0-240 | 功能描述:RELAY GENERAL PURPOSE 30A 240V RoHS:是 类别:继电器 >> 功率，高于 2 安 系列:PRD 其它有关文件:Standards Chart 标准包装:50 系列:DK 继电器类型:通用 线圈类型:无锁存 线圈电流:16.7mA 线圈电压:12VDC 触点形式:SPST-NO（1 A 型） 触点额定值（电流）:10A 切换电压:250VAC，125VDC - 最小值 关闭电压（最大）:8.4 VDC 关闭电压（最小）:1.2 VDC 特点:密封式 - 全部 安装类型:通孔 端接类型:PC 引脚 包装:管件 触点材料:银锡氧化物（AgSnO） 操作时间:10ms 释放时间:8ms 线圈功率:200 mW 线圈电阻:720 欧姆 工作温度:-40°C ~ 65°C 其它名称:255-1096DK1AE-12V |
| PRD-4AY0-120 | 制造商:TE Connectivity 功能描述: |
| PRD-4AY0-24 | 制造商:TE Connectivity 功能描述: |
| PRD-4DG0-24 | 制造商:TE Connectivity 功能描述: |
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