PEF2023 SIEMENS [Siemens Semiconductor Group], PEF2023 Datasheet
PEF2023
Related parts for PEF2023
PEF2023 Summary of contents
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ICs for Communications ISDN DC Converter Circuit IDCC PEB 2023 Version 1.1 PEF 2023 Version 1.1 Data Sheet 08. ...
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PEB 2023 PEF 2023 Revision History: Previous Releases: Page Subjects (changes since last revision) all Pages Additional to the normal temperature range devices PEB 2023 also the extended temperature range devices PEF 2023 are specified in this Data Sheet. 21 ...
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Table of Contents 1 Overview ...
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Overview The PEB/F 2023 is a pulse width modulator circuit designed for fixed-frequency switching regulators with very low power consumption. In telephone and ISDN-systems a high conversion yield is crucial to maintain functionality in all supply conditions via S- ...
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ISDN DC Converter Circuit IDCC Data Sheet 1.1 Features • Switched Mode DC/DC Converter • ITU ISDN Compatible • Low Power Dissipation • Supply Voltage Range 0: Supply Voltage Range 1: 12V to 80V Supply Voltage Range 2: 22V to ...
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Pin Configuration (top view) V GND Semiconductor Group P-DSO- REF IDCC 4 11 PEB 2023 PEF 2023 5 10 EXT ...
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Pin Definitions and Functions Pin No. Symbol V 1 REF GND EXT COMP UVx 13 ...
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Functional Block Diagram Figure 1 Block Diagram Semiconductor Group 8 PEB 2023 PEF 2023 Overview 08.97 ...
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System Integration Figure 2 and 3 showing examples out of the wide application field of the PEB/F 2023. In network termination applications, the PEB/F 2023 supplies the internal IC’s directly from the U–interface. If the local main supply of ...
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In figure 3 the S-transformers are replaced by the PEB/F 3023 which is called S-Feeder. When using the S-Feeder a capacitive coupling between S-receive-path and the S- Transceiver is necessary. For the S-transmit-path the S-Feeder need an extra 2.4V transmitter ...
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Figure 4 shows the PEB/F 2023 in flyback configuration with transformer isolation using supply voltage range 3. This application circuit is used to supply the internal IC’s of the NT from the U-interface and also to supply the S-interface in ...
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Figure 5 shows the PEB/F 2023 in a non-isolated minimum configuration by using supply voltage range 1 (for this input voltages also supply voltage range 2 is possible). The voltage drop over R detection level. To get low power dissipation ...
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For calculation of resistor input voltage : IN V EXT I , input current : R7 V – V INmax EXT ma x ----------------------------------------------- - R = 7min I R7max To get lower power dissipation the value ...
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Surge Protection In telephone and ISDN-systems the topic “surge protection“ or “lightning overvoltage protection“ is very important. For the PEB/F 2023 overvoltage protection is necessary when the DC/DC converter input supply voltage V lines. Figure 7 shows how to ...
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Calculation example: figure 7 with start ZD 1 for t : 100msec 100 INmax ZD1 for t : 10msec 100 INmax ZD1 In this ...
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Functional Description The PEB/F 2023 contains the following functional blocks: • Supply and Biasing • Undervoltage Detection • Temperature Compensated Voltage Reference • Sawtooth Oscillator • Error Amplifier • Pulse Width Modulator • Digital Current Limiting • Soft Start ...
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Note: An internal 9.4V zener diode protects the V maximum zener current is 6mA! If the external supply isn’t stabilized, the input current must be limited (e. resistor, see also supply voltage range 0)! Supply Voltage Ranges Supply ...
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Voltage Reference The reference regulator of the PEB/F 2023 is based on a temperature compensated bandgap. This circuitry is fully active at supply voltages (pin V provides up to 0.5mA of load current to external circuitry at 4 volts. This ...
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Error Amplifier Conventional operational amplifier for closed-loop gain and phase compensation. Low output impedance: unity-gain stable. Pulse Width Modulator The pulse width modulator compares the sawtooth-voltage of the oscillator output with the output of the error amplifier and with the ...
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Electrical Characteristics 3.1 Absolute Maximum Ratings Parameter Symbol Supply voltage (pin V ) for S sup. voltage range 1 Supply voltage (pin V ) for S sup. voltage range Transient input current on pin V (sup. ...
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Operating Range Parameter Symbol Ambient temperature under bias PEB 2023 PEF 2023 Supply voltage (pin V ) for S sup. voltage range 1 Supply voltage (pin V ) for S sup. voltage range Note: In the ...
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DC Characteristics Parameter V Supply current (pin to GND Reference REF Output voltage Line regulation Load regulation Temperature stability Oscillator SYNC 20kHz 39k OSC T Initial accuracy f Voltage ...
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DC Characteristics (cont’d) Parameter Error Amplifier V V COMP Input offset voltage Input current Common mode range DC open loop gain Common mode rejection Unity gain bandwidth Supply voltage rejection / V V EXT COMP H-output voltage ...
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DC Characteristics (cont’d) Parameter Undervoltage Detection UV, UVx Start-up threshold 1 Start-up threshold 2,3 External Supply V EXT Output voltage Output current Input voltage Z-current T General Parameters, = 25°C A Power consumption High impedance input current Note: The listed ...
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Package Outlines Plastic Package, P-DSO-14 (Plastic Dual Small Outline Semiconductor Group 25 PEB 2023 PEF 2023 Package Outlines 08.97 ...