参数资料
型号: MAX5059EUI+T
厂商: Maxim Integrated Products
文件页数: 17/25页
文件大小: 0K
描述: IC DRVR SYNC RECT 28-TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 电源
电流 - 电源: 2.5mA
电源电压: 9.3 V ~ 28 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.173",4.40mm 宽)裸露焊盘
供应商设备封装: 28-TSSOP 裸露焊盘
包装: 带卷 (TR)
Parallelable Secondary-Side Synchronous Rectifier
Driver and Feedback-Generator Controller ICs
1) Select a parallel equivalent resistance R eq value to
produce the nominal reference voltage. For exam-
ple, R eq = 35.4k Ω gives you V IREF = 1.77V.
2) Select the margin-up percentage value:
5) Select the margin-down percentage value:
Δ D = 5%
6) Recalculate R eq with the selected values:
3) Calculate R 32 :
Δ U = 5%
R eq =
R 12 R 32
R 12 + R 32
R 32 = R eq ×
100% + Δ U
Δ U
R eq = 35.24k Ω .
7) Calculate R 33 :
R 32 = 743.4k Ω . Calculated
Select the nearest 0.1% value.
R 33 =
100 % × R eq × R 12
R 12 × ( 100 % + Δ D ) - 100 % × R eq
R 32 = 741k Ω .
4) Calculate R 12 :
Selected
R 33 = 361.186k Ω .
Select the nearest 0.1% value:
Calculated
R 12 = 32
R × Δ U
100 %
R 12 = 37.05k Ω . Calculated
Select the nearest 0.1% value.
R 12 = 37k Ω . Selected
COMPV
13
INV
C28
R 33 = 361k Ω . Selected
8) Calculate the reference voltage with the selected
chosen values:
V IREF = 50μA ? R eq . R eq from step 6.
V IREF = 1.762V.
V OUT
VSP
17
VSO
E/A
14
15
RSA
VSN
16
V OUT = (50 μ A) x R12
FOR: 0.5V ≤ V OUT ≤ 2.5V
I REF
50 μ A
I REF
12
R12
Figure 11. Remote-Sense Amplifier Connection for 0.5V ≤ VOUT ≤ 2.5V
______________________________________________________________________________________
17
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