参数资料
型号: MAX5069EVKIT
厂商: Maxim Integrated Products
文件页数: 13/19页
文件大小: 0K
描述: EVAL KIT FOR MAX5069
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,隔离
输出电压: 12V
电流 - 输出: 10A
输入电压: 36 ~ 72V
稳压器拓扑结构: 降压
频率 - 开关: 500kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MAX5069
High-Frequency, Current-Mode PWM Controller
with Accurate Oscillator and Dual FET Drivers
V OUT
C7
V IN
R1
C1
R2
R6
C2
FLTINT
IN
UVLO/EN
R HYST
C3
C4
V CC
MAX5069B
HYST
R7
REG5
R3
R4
RT
NDRVB
NDRVA
Q1
Q2
DT
CS
R12
C5
SCOMP
FB
R8
V CC
C8
AGND
PGND COMP
R5
C6
R10
PS2913
C10
R13
R9
R11
MAX8515
R14
Figure 6. Secondary-Side, Regulated, Isolated Power Supply
For example:
To minimize power loss on this resistor, choose a high-
I C1 =
R 1 ?
24 V x 4 . 7 μ F
500 ms
36 V ? 12 V
225 μ A + 90 μ A
= 225 μ A
= 76 k ?
er value for R1 than the one calculated above (if a
longer startup time can be tolerated).
The above startup method applies to a circuit similar to
the one shown in Figure 1. In this circuit, the tertiary
winding has the same phase as the secondary wind-
ings. Thus, the voltage on the tertiary winding at any
given time is proportional to the output voltage. The
minimum discharge time of C1 from 22V to 10V must
be greater than the soft-start time (t SS ).
______________________________________________________________________________________
13
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