IXD9213/14
© 2014 IXYS Corp.
6
Doc. No. IXD9213_DS, Rev. N0
Characteristics subject to change without notice
Thermal Shutdown
The thermal shutdown function monitors chip temperature to prevent IC damage, The thermal shutdown circuit
starts operating and turns off both P- and N-channel MOSFETs, when the chip’s temperature reaches 150
0
C. When
the temperature drops to 120
0
C (TYP.) or less, the IC resumes normal operation through soft-start.
Short-Circuit Protection
The short-circuit protection monitors the output voltage. If output is accidentally shorted to the ground, output
voltage starts falling. When this voltage becomes less than threshold level, the Short-Circuit Protection turns off and
latches quickly the P-channel transistor.
To restart IC operation after this condition, either CE pin should be toggled H – L – H, or V
IN
pin voltage should be
set below UVLO to resume operations from soft start.
The sharp load transients creating a voltage drop at the V
OUT
may result in Short Circuit protection operating at
voltages higher than threshold level voltage.
C
L
High Speed Discharge
The IXD9213/02B, C, and G series can quickly discharge the output capacitor (C
L
) to avoid application malfunction,
when CE pin set logic LOW to disable IC.
C
L
Discharge Time is proportional to the resistance (R) of the N-channel transistor located between the L
X
pin and
ground and the output C
L
capacitance as shown below.
t
DSH
= RC
L
x Ln (V
OUT(E)
/ V), where
V - Output voltage after discharge
V
OUT(E)
- Output voltage
R = 300 (Typical value）
Output Voltage Discharge Characteristics
CE Pin Function
The IXD9213/14 series enter the shut down mode, when a LOW logic-level signal applies to the CE pin. In the
shutdown mode, IC current consumption is ~0.01 A (Typical value), with the Lx and V
OUT
pins at high impedance
state. The IC starts its operation when a HIGH logic-level signal applies to the CE. The IC does not have pull-
up/down resistors at CE input, therefore do not left this input open to avoid unstable IC operation.
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern