TDA16846 Infineon Technologies, TDA16846 Datasheet - Page 18

• Manufacturer Part Number: TDA16846
• Description: IC POWER SUPPLY CONTROLLER 14DIP
• Manufacturer: Infineon Technologies

Specifications of TDA16846

• Applications: Power Supply Controller
• Voltage - Supply: 8 V ~ 16 V
• Current - Supply: 5mA
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Start-up Supply Current: 1mA
• Operating Supply Voltage (min): -0.3V
• Operating Supply Voltage (max): 17V
• Operating Temp Range: -25C to 125C
• Operating Temperature Classification: Commercial
• Package Type: PDIP
• Pin Count: 14
• Mounting: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Compliant
• Other names: SP000011731; TDA16846X; TDA16846XK

Secondly, a High Power Shutdown Comparator (FC2) is implemented: When the voltage
V
power measurement circuit (Pin 8) is smoothed by
shutdown” input at Pin 6. The relation between this voltage
the converter
L
V
So the time constant of
The converters high power shutdown level can be adjusted lower (by
current limit level (see “current limiting”). Thus because of the delay
can deliver maximum output power (current limit level) for a certain time (e. g. for power
pulses like motor start current) and a power below the high power shutdown level for an
unlimited time. This is of advantage because the thermal dimensioning of the power
devices needs to be done for the lower power level only. Once the voltage
1.2 V no more charging or discharging happens at Pin 8. The voltage
due to the bias current out of FC2 and the converter remains switched-off. Reset can be
done either by plugging-off the supply from the mains or by a high value resistor
(Figure 14).
too little current (I9 < I9FC2), the temporary high power circuit is disabled.
Secondary
6
OUT
Version 2.0
at Pin 6 exceeds 1.2 V the Error Flip Flop (ERR) is set. The output voltage of the
: The converters output voltage
: The transformers secondary inductance
R
P
6
causes a reset every few seconds. When Pin 9 is not connected or gets
is approximately:
V
6
R
R
9
9
/
C
(
P L
8
C
for a certain high power shutdown level
8
Secondary
(
P
SD
L
18
Secondary
5 V)/(
V
OUT
R
8
4.2)/
/
2
C
6
C
and applied to the “high power
V
8
OUT
V
6
R
2
and the output power of
9
TDA 16846/16846-2
TDA 16847/16847-2
)
R
8
/
P
C
R
V
SD
6
9
6
, the converter
,
remains high
is:
C
V
8
6
) than the
31 Jul 2003
exceeds
R
6