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TLE9262QX Datasheet, PDF (48/163 Pages) Infineon Technologies AG – Dedicated Data Sheets are available for the different product variants | |||
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8
External Voltage Regulator 3
8.1
Block Description
TLE9262QX
External Voltage Regulator 3
VS
VCC3SH
VCC3B
VCC3REF
RBE
VS - VCC3shunt
> Vshunt_threshold
State Machine
ICC3base
+
- VREF
Figure 17 Functional Block Diagram
Functional Features
⢠5V / 3.3V low-drop voltage regulator with external PNP transistor (up to 350mA with 470m⦠shunt resistor)
⢠Four high-voltage pins are used: VS, VCC3B, VCC3SH, VCC3REF
⢠Configurable as stand-alone regulator (5V or 3.3V output voltage selectable via SPI) or in load-sharing mode
with VCC1 (5V output voltage)
⢠⥠4.7µF ceramic capacitor at output voltage for stability, with ESR < 150m⦠@ f = 10 kHz to achieve the voltage
regulator control loop stability based on the safe phase margin (bode diagram).
⢠Overcurrent limitation with external shunt in stand-alone configuration
⢠Adjustable load current sharing ratio between VCC1 and VCC3 for load-sharing configuration
⢠Under voltage shutdown in stand-alone configuration only
Table 11 1)External Voltage Regulator Configurations depending on VCC1 output voltage
VCC1 configuration VCC3 voltage for VCC3_ V_CFG = 0
VCC3 voltage for VCC3_ V_CFG = 1
VCC1 = 5.0V
VCC3 = 5.0V
VCC3 = 3.3V
1) This settings are valid only for the VCC3 stand-alone configuration. The bit VCC3_ V_CFG is ignored for VCC3 load
sharing configuration
Data Sheet
48
Rev. 1.1, 2014-09-26
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