Siemens KNX EIB TP-UART 2-IC User Manual

GAMMA instabus
Release: February 2012
KNX EIB TP-UART 2-IC
Technical Manual pages 42 Siemens AG
Infrastructure and Cities Sector,
Building Technologies
page 12 © Siemens AG 2012 Control Products and Systems
Subject to change without further notice. P. O. Box 10 09 53,
D-93009 Regensburg
Symbol Parameter Min Max Unit Note
V
IN
input voltage 6.25 33 V
V
VCC[5]
supply voltage (generated by the ASIC) 5.0-5% 5.0+5% V 1)
V
VCC[3]
supply voltage (generated by the ASIC) 3.3-5% 3.3+5% V 2)
C
VCC
external storage capacitance 8 18 µF
L
VCC
External Inductance 220 µH
L
VCC
External Inductor Series loss resistance
≤ 7.5
3)4)
C
VCCESR
ESR of external storage and load capacitance to
achieve V
ripple1
0.3 0.7 
I
VCC
external load at VCC 0 30 mA
with reduced I
V20
50 mA
1) SVCC connected to VCC
2) SVCC connected to VB-
3) Such as EPCOS SIMID B824432C part No. B824321224K000
4) If series loss resistance ≤ 1  an efficiency of typical 80 % will be reached
Table 8 Supply Pin VCC
2.2.7 Supply Pin VDP
Pin VDP delivers an internally generated supply voltage to internal loads only. The supply is generated
by a series regulator. Internal input voltage for VDP is VDDH. Supply VDP is the positive supply for the
mode control pins and DIV and TSTIN_BDS pins.
Symbol Parameter Min Max Unit Note
V
IN
input voltage 4.75 V
VSP
V
V
VDP
Internal supply voltage 3.0 3.6 V
C
VDP
external storage capacitance 176 264 nF 1)
I
VDP
external load at VDP 0 mA 2)
1) Low ESR < 0.1 Ohms
2) In the application there should be no external load on VDP.
Table 9 Supply Pin VDP
2.2.8 Supply Pins VDDH and VSSH
Pin VDDH and VSSH deliver an internally generated supply voltage to internal loads only. The VDDH
supply is connected to the VSP externally by a short circuit. The VSSH supply is generated by a series
regulator to provide a voltage to control the DC-DC converter. Internal input voltage for VSSH is VDDH
which is supplied from the external voltage VSP.
Symbol Parameter Min Max Unit Note
V
VDDH
Internal supply voltage 6.25 V
VSP
V
V
SSH
Internal supply voltage V
VDDH
-3.6 V
VDDH
-3.0 V
C
VSSH
external storage capacitance 176 264 nF 1)
I
VSSH
external load at VSSH 0 mA
I
VDDH
external load at VDDH 0 mA
1) Low ESR < 0.1 Ohms
Table 10 Supply Pins VDDH & VSSH

Siemens KNX EIB TP-UART 2-IC Specifications

General

Brand	Siemens
Model	KNX EIB TP-UART 2-IC
Category	Industrial Equipment
Language	English