參數(shù)資料
型號(hào)： HA16138PS
廠商： Hitachi,Ltd.
英文描述： AC/DC Switching Converter Controller IC With High-Voltage Power MOS FET
中文描述： AC / DC開(kāi)關(guān)變換器控制IC與高壓電源MOS FET
文件頁(yè)數(shù)： 17/20頁(yè)
文件大小： 96K
代理商： HA16138PS
HA16138PS
17
Application Circuit Examples 3
As this IC is provided with a remote on/off function, it is possible to implement power management
without turning off the power supply. Using a remote on/off control circuit as shown in the figure below,
the CT pin voltage is pulled up to the off mode start voltage or above, and the IC is stopped. In the off
mode, control of PWM output stoppage, soft start resistance resetting, and starter circuit stoppage is
performed without stopping the internal reference voltage generation circuit. With this function, also, latch
operation is not performed, and an auto-restart is executed as soon as the CT pin voltage falls below the off
mode start voltage. It is recommended that the remote on/off control signal be controlled by a
microcomputer or other logic signal.
Remote ON/OFF control circuit
Units R:
C: F
R1
10k
2SA1029
2SC458
HA16138PS
DRAIN
DRAIN
VDD
FB
SOURCE
SGND
CT
COMP
1
2
3
4
8
7
6
5
CT
220p
R3
130k
R4
10k
ON/OFF
H: OFF
L: ON
R2
43k
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