AT1386
Preliminary Product Information
6-Channel DC-DC Converter for DSC
＊Output block
The output block is the totem pole configuration, which could drive external
MOSFET or transistor.
2. Channel Control Function
The channels are turned on and turned off depending on the voltage levels at the
CTL, CTL12, CTL3, CTL4, CTL5, and CTL6. Described as follow.
CTL
CTL1
CTL2
CTL3
CTL4
CTL5
CTL6
CH1
L
X
H
H
Z
Z
H
Z
Z
Z
Z
Z
Z
Z
Z
X
X
Z
Z
H
Z
Z
Z
X
Z
Z
Z
H
Z
Z
X
Z
Z
Z
Z
H
Z
X
Z
Z
Z
Z
Z
H
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
CH2
CH3
CH4
CH5
CH6
X : Don’t care
Z: Low or Floating
3. Protective Functions
＊Short circuit protection and timer latch
The short circuit detection comparator in each channel detects the output voltage
level of power converter. When the output voltage falls below the short
detection level, there is a constant current bias charging the external capacitor
CCSCP which connected to the CSCP pin until the capacitor voltage level reaches
about 0.7V then disable the IC. It could reset the actuated protection by restart
the power source or pull CTL from low to high.
＊Under-voltage lockout protection
The under-voltage lockout protection is to disable the IC while the supply voltage
transient or momentary decrease, which may cause the IC to malfunction. To
prevent such malfunctions, the under-voltage lockout protection circuit detects a
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
12
AIMTRON [ AIMTRON TECHNOLOGY ]
