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参数资料
| 型号： | TDA16847G |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 稳压器 |
| 英文描述： | 0.1 A POWER FACTOR CONTROLLER, 98 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | PLASTIC, DSO-14 |
| 文件页数： | 8/28页 |
| 文件大小： | 586K |
| 代理商： | TDA16847G |
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TDA 16846
TDA 16846-2
Data Sheet
16
2003-07-31
3
Protection Functions
The chip has several protection functions:
Current Limiting
See “Primary Current Simulation PCS (Pin 2) / Current Limiting” and “Fold Back Point
Correction PVC (Pin 11)”.
Over- and Undervoltage Lockout OV/SVC (Pin 14)
When
V
14 at Pin 14 exceeds 16.5 V, e. g. due to a fault in the regulation circuit, the Error
Flip Flop ERR is set and the output driver is shut-down. When
V
14 goes below the lower
SVC threshold, ERR is reset and the driver output (Pin 13) and the soft-start (Pin 4) are
shut down and actively held low.
Primary Voltage Check PVC (Pin 11)
When the voltage
V
11 at Pin 11 goes below 1 V the Error Flip Flop (ERR) is set. E.g. a
voltage divider from the rectified mains at Pin 11 prevents high input currents at a too low
input voltage.
Free Usable Fault Comparator FC1 (Pin 10)
When the voltage at Pin 10 exceeds 1 V, the Error Flip Flop (ERR) is set. This can be
used e. g. for mains overvoltage shutdown.
Free Usable Fault Comparator FC2 (Pin 6)
When the voltage at Pin 6 exceeds 1.2 V, the Error Flip Flop (ERR) is set. A resistor
between Pin 9 (REF) and ground is necessary to enable this fault comparator.
Voltage dependent Ringing Suppression Time
During start-up and short-circuit operation, the output voltage of the converter is low and
parasitic zero crossings are applied for a longer time at Pin 3. Therefore the Ringing
Suppression Time TC1 (see “Off-Time Circuit OTC (Pin 1)”) is extended with a factor of
2.2 at a low output voltage. The voltage at pin 1 must not fall below the limit V1L.
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