TDA4716C Infineon Technologies AG, TDA4716C Datasheet

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TDA4716C

Manufacturer Part Number
TDA4716C
Description
IC for switching-mode power supplies
Manufacturer
Infineon Technologies AG
Datasheet

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Part Number:
TDA4716C
Manufacturer:
SIEMENS
Quantity:
556
IC for Switched-Mode Power Supplies (SMPS)
Bipolar IC
Type
TDA 4714 C
TDA 4716 C
These versatile SMPS ICs comprise digital and analog functions which are required to
design high-quality flyback, single-ended, and push-pull converters in normal, half-
bridge and full-bridge configurations. The components can also be used in single-ended
voltage multipliers and speed-controlled motors. Malfunctions in electrical operation are
recognized by the integrated op amps which activate protective functions.
Semiconductor Group
Features
Push-pull outputs (open collector)
Double pulse suppression
Dynamic current limitation
Overvoltage protection
IC undervoltage protection
Reference voltage source
Reference overload protection
Soft start
Feed-forward control
Operational amplifier (TDA 4716 C)
Not for new design
Ordering Code
Q67000-A8312
Q67000-A8313
1
P-DIP-14-1
P-DIP-16-1
Package
P-DIP-14-1
P-DIP-16-1
TDA 4714 C
TDA 4716 C
09.94

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TDA4716C Summary of contents

Page 1

IC for Switched-Mode Power Supplies (SMPS) Bipolar IC Features Push-pull outputs (open collector) Double pulse suppression Dynamic current limitation Overvoltage protection IC undervoltage protection Reference voltage source Reference overload protection Soft start Feed-forward control Operational amplifier (TDA 4716 C) Type ...

Page 2

Pin Configurations (top view) TDA 4714 C Semiconductor Group TDA 4716 C 2 TDA 4714 C TDA 4716 C ...

Page 3

Pin Definitions and Functions (TDA 4714 C) Pin Symbol Function V 1 Reference voltage REF Supply voltage Output Output Soft start soft start 6 R VCO R T ...

Page 4

Circuit Description The following is a description of the individual functional units and their interaction. Voltage Controlled Oscillator (VCO) The VCO generates a sawtooth voltage. The duration of the falling edge is determined C by the value of . The ...

Page 5

Pulse Turn-OFF Flipflop The pulse turn-OFF flipflop enables the outputs at the start of each half cycle error signal from comparator turn-off signal from K2 is present, the outputs will immediately be switched off. Comparator ...

Page 6

Comparator K7 K7 serves to recognize overcurrents. This is the reason why both inputs of the operational amplifier have been brought out. Turning on is resumed after error recovery at the beginning of the next half period but without using ...

Page 7

Block Diagram (TDA 4714 C) Semiconductor Group 7 TDA 4714 C TDA 4716 C ...

Page 8

Block Diagram (TDA 4716 C) Semiconductor Group 8 TDA 4714 C TDA 4716 C ...

Page 9

Absolute Maximum Ratings Parameter Supply voltage Voltage at Q1, Q2 Current at Q1 Input T C Input T R Input R C Input R Input comparator K2, K5, K7 Output K5 Input op amp TDA 4716 C Output ...

Page 10

Characteristics < < – < S Parameter Supply current 100 kHz VCO Reference T Reference voltage mA, = ...

Page 11

Characteristics (cont’ < < – < S Parameter Ramp Generator Frequency range C Maximum voltage Minimum voltage Input current through R Current transformation ratio Comparator K2 Input ...

Page 12

Characteristics (cont’ < < – < S Parameter Output Stages Q1, Q2 Output voltage Output leakage current Dynamic Current Limitation K7 Common-mode input ...

Page 13

Dimensioning Notes for RC Network 1. Determination of the minimum time during which both outputs must be disabled C selection of 2. Determination of the VCO frequency = 2 x output frequency selection Determination of the rated ...

Page 14

Pulse Diagram Semiconductor Group 14 TDA 4714 C TDA 4716 C ...

Page 15

VCO Frequency versus Semiconductor Group R C and TDA 4714 C TDA 4716 C ...

Page 16

VCO Temperature Response max VCO C ---------------- 1 K with as parameter Semiconductor Group 16 TDA 4714 C TDA 4716 C ...

Page 17

Supply Current versus Temperature Semiconductor Group Output Current versus L-Output Voltage 17 TDA 4714 C TDA 4716 C ...

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