UC3846G-D08-T UTC [Unisonic Technologies], UC3846G-D08-T Datasheet - Page 7

• Manufacturer Part Number: UC3846G-D08-T
• Description: LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
• Manufacturer: UTC [Unisonic Technologies]

UC3846
Protection Controls
blanking time, the driver is shut down. Driver is reset after failure is eliminated.
OVP
FIG.3. The test circuit as followed FIG.4.
OTP
PCB Layout Note
mode. While slope compensation helps alleviate these problems. Good placement and layout practices should be
followed. Avoiding long PCB traces and component leads, locating compensation and filter components near the
UTC UC3846, and increasing the power MOS gate resistance is advised.
The IC takes on more protection functions such as OVP and OTP etc. In case of those failure modes for continual
The OVP will shut down the switching of the power MOSFET whenever V
OTP will shut down driver when junction temperature T
Noise from the current sense or the control signal can cause significant pulse width jitter in continuous-conduction
OPERATION DESCRIPTION(Cont.)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
FIG.3 OVP case
J
>T
(THR)
for continual a blanking time.
LINEAR INTEGRATED CIRCUIT
FIG.4 OVP test circuit
DD
>V
OVP
. The OVP case as followed
QW-R103-053.B
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