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TDA16846 数据表(PDF) 3 Page - Infineon Technologies AG

部件名 TDA16846
功能描述  Controller for Switch Mode Power Supplies Supporting Low Power Standby and Power Factor
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制造商  INFINEON [Infineon Technologies AG]
网页  http://www.infineon.com
标志 INFINEON - Infineon Technologies AG

TDA16846 数据表(HTML) 3 Page - Infineon Technologies AG

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Version 2.0
3
31 Jul 2003
Controller for Switch Mode Power Supplies
Supporting Low Power Standby and Power
Factor Correction
TDA 16846/16846-2
TDA 16847/16847-2
Bipolar IC
P-DSO-14-3
P-DIP-14-3
1Overview
1.1
Features
• Line Current Consumption with PFC
• Low Power Consumption
• Stable and Adjustable Standby Frequency
• Very Low Start-up Current
• Soft-Start for Quiet Start-up
• Free usable Fault Comparators
• Synchronization and Fixed Frequency Circuits
• Over- and Undervoltage Lockout
• Switch Off at Mains Undervoltage
• Temporary High Power Circuit (only TDA 16847-2)
• Mains Voltage Dependent Fold Back Point Correction
• Continuous Frequency Reduction with Decreasing Load
• Adjustable and Voltage Dependent Ringing Suppression Time
1.2
Description
The TDA 16846-2 (this name is used in the description for all types) is optimized to
control free running or fixed frequency flyback converters with or without Power Factor
Correction (Current Pump). To provide low power consumption at light loads, this device
reduces the switching frequency in small steps with load, towards an adjustable
minimum (e. g. 20 kHz in standby mode). Additionally, the startup current is very low. To
avoid switching stress on the power devices, the power transistor is always switched on
at minimum voltage. A special circuit is implemented to avoid jitter. The device has
Type
Ordering Code
Package
TDA 16846
Q67000-A9377
P-DIP-14-3
TDA 16847
Q67000-A9378
P-DIP-14-3
TDA 16846G
Q67006-A9430
P-DSO-14-3
TDA 16847G
Q67006-A9412
P-DSO-14-3
TDA 16846-2
Q67040-S4494
P-DIP-14-3
TDA 16847-2
Q67040-S4496
P-DIP-14-3
TDA 16846-2G
Q67040-S4495
P-DSO-14-3
TDA 16847-2G
Q67040-S4497
P-DSO-14-3


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