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PG-DSO-36-26

Multi-Voltage Processor Power Supply

Data Sheet 1 Rev. 2.2, 2006-12-01

TLE 6368 / SONIC

1Overview

1.1 Features

• High efficiency regulator system

• Wide input voltage range from 5.5V to 60V

• Stand-by mode with low current consumption

• Suitable for standard 12V/24V and 42V PowerNets

• Step down converter as pre-regulator:

5.5V / 1.5A

• Step down slope control for lowest EME

• Switching loss minimization

• Three high current linear post-regulators with

selectable output voltages:

5V / 800mA

3.3V or 2.6V / 500mA

3.3V or 2.6V / 350mA

• Six independent voltage trackers (followers):

5V / 17mA each

• Stand-by regulator with 1mA current capability

• Three independent undervoltage detection circuits

(e.g. reset, early warning) for each linear post-regulator

• Power on reset functionality

• Tracker control and diagnosis by SPI

• All outputs protected against short-circuit

• Power PG-DSO-36-26 package

• Green (RoHS compliant) version of TLE 6368 G1

• AEC qualified

SMD = Surface Mounted Device

Type Package

TLE 6368 G1 / SONIC PG-DSO-36-26 (RoHS compliant)

Summary of content (59 pages)

PAGE 1
Multi-Voltage Processor Power Supply 1 Overview 1.1 Features • • • • • • • • • • • • • • • • • High efficiency regulator system Wide input voltage range from 5.5V to 60V Stand-by mode with low current consumption Suitable for standard 12V/24V and 42V PowerNets Step down converter as pre-regulator: 5.5V / 1.5A Step down slope control for lowest EME Switching loss minimization Three high current linear post-regulators with selectable output voltages: 5V / 800mA 3.3V or 2.6V / 500mA 3.3V or 2.
PAGE 2
TLE 6368 / SONIC 1.2 Short functional description The TLE 6368 G1 / SONIC is a multi voltage power supply system especially designed for automotive applications using a standard 12V / 24V battery as well as the new 42V powernet. The device is intended to supply 32 bit micro-controller systems which require different supply voltage rails such as 5V, 3.3V and 2.6V. The regulators for external sensors are also provided.
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TLE 6368 / SONIC 1.
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TLE 6368 / SONIC 1.4 Pin definitions and functions Pin No. Symbol Function 1,18,19, 36 GND Ground; to reduce thermal resistance place cooling areas on PCB close to these pins. The GND pins are connected internally to the heat slug at the bottom.
PAGE 5
TLE 6368 / SONIC 1.4 Pin definitions and functions (cont’d) Pin No. Symbol Function 11 Q_T4 Voltage Tracker Output T4 tracked to Q_LDO1; bypass with a 1µF ceramic capacitor for stability. It is switched on and off by SPI command. Keep open, if not needed. 12 Q_T5 Voltage Tracker Output T5 tracked to Q_LDO1; bypass with a 1µF ceramic capacitor for stability. It is switched on and off by SPI command. Keep open, if not needed.
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TLE 6368 / SONIC 1.4 Pin definitions and functions (cont’d) Pin No. Symbol Function 27 Q_LDO1 Voltage Regulator Output 1; 5V output; acts as the reference for the voltage trackers.The SPI and window watchdog logic is supplied from this voltage. For stability a ceramic capacitor of 470nF to GND is sufficient.
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TLE 6368 / SONIC 1.5 Basic block diagram TLE 6368 Q_STB Standby Regulator Boost SW 2* IN 2* BUCK REGULATOR Slew Bootstrap Driver OSZ ErrorAmplifier PWM Internal Reference feedback FB/L_IN 2* C+ Charge Pump CCP Protection Wake C- Power Down Logic SEL R1 R2 Reset Logic R3 ref Window Watchdog ref CLK ref CS ref SPI 16 bit DI ref DO ref ERR Linear Reg. 1 Q_LDO1 Linear Reg. 2 Q_LDO2 Linear Reg.
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TLE 6368 / SONIC 2 Detailed circuit description In the following major buck regulator blocks, the linear voltage regulators and trackers, the undervoltage reset function, the watchdog and the SPI are described in more detail. For applications information e.g. choice of external components, please refer to section 5. 2.1 Buck Regulator The diagram below shows the internal implemented circuit of the Buck converter, i. e. the internal DMOS devices, the regulation loop and the other major blocks.
PAGE 9
TLE 6368 / SONIC the gate driver supply is managed by the combination of internal charge pump, external charge pump and bootstrap capacitor. 2.1.1 Current mode control scheme The regulation loop is located at the left lower corner in the schematic, there you find the voltage feedback amplifier which gives the actual information of the actual output voltage level and the current sense amplifier for the load current information to form finally the regulation signal.
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TLE 6368 / SONIC section 5) the output voltage level is present at the drain of the switch. As soon as the voltage at the SW pin passes zero volts the handover to the main switch occurs and the traditional switching behaviour of the Buck switch can be observed. 2.2 Linear Voltage Regulators The Linear regulators offer, depending on the version, voltage rails of 5V, 3.3V and 2.6V which can be determined by a hardware connection (see table at 2.2.2) for proper power up procedure.
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TLE 6368 / SONIC Power Sequencing VFB/L_IN VLDO_EN t VQ_LDO1 5V VRth5 3.3V 2.6V t VQ_LDO2 (2.6V Mode) 0.7V 2.6V VRth2.6 5V LDO 5V LDO 0.7V t VQ_LDO3 (3.3V Mode) 5V LDO 3.3V VRth3.3 5V LDO +/- 50mV +/- 50mV t Figure 4 Power-up and -down sequencing of the regulators 2.2.2 Q_LDO2 and Q_LDO3 output voltage selection* To determine the output voltage levels of the three linear regulators, the selection pin (SEL, pin 23) has to be connected according to the matrix given in the table below.
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TLE 6368 / SONIC 2.3 Voltage Trackers For off board supplies i.e. sensors six voltage trackers Q_T1 to Q_T6 with 17mA output current capability each are available. The output voltages match Q_LDO1 within +5 / -15mV. They can be individually turned on and off by the appropriate SPI command word sent by the microcontroller. A ceramic capacitor with the value of 1µF at the output of each tracker is sufficient for stable operation without oscillation.
PAGE 13
TLE 6368 / SONIC Q_LDO1 had decreased below 3.3V (max.), the SPI will reset to the default settings including the 8ms delay time. If the voltage on Q_LDO1 during sleep or power off mode was kept above 3.3V the delay time set by the last SPI command is valid. VFB/L_IN VQ_LDOx VRx t < trr VRTH,Q_LDOx t trr tRES tRES tRES tRES t thermal shutdown under voltage over load Figure 5 Undervoltage reset timing 2.
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TLE 6368 / SONIC definition tSR = tOW /2 tWDR = tRES (not the same scale) tCW =tCW tOW =tCW (not the same scale) closed window open window reset delay time without trigger reset start delay time after window watchdog timeout definition t EOW = end of open window t ECW Example with: tCW =128ms ∆=25% (oscillator deviation) fOSC =f OSCmax t EOW, w.c.= ( t CW+tOW )(1-∆) worst cases f OSC=f OSCmin reset duration time after window watchdog time-out tECW, w.c. = 128(1.25) = 160ms t ECW, w.c.
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TLE 6368 / SONIC P e rfe c t trig g e rin g a fte r P o w e r o n R e s e t V Q _LD O 1 V R th 1 1V t tR ES R1 t tC W W a tc h d o g w in d o w CW tSR OW CW OW CW CW OW t CS 1) 2) 2) 2) t ERR t In c o rre c t trig g e rin g W a tc h d o g w in d o w CW OW 3) 4) t CS w ith W D trig = 1 1) 2) 3) 4) t W a tc h d o g e n a b le c o m m a n d w ith n o trig g e r: D 0 D 9 D 1 4 D 1 5 = 0 1 0 0 W a tc h d o g trig g e r: D 1 5 = 1 P re trig g e r M is s in g trig g e r Legend: O
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TLE 6368 / SONIC the closed window (CW) starts. Then three valid watchdog triggers are shown, no effect on the reset line and/or error pin is observed. With the missing watchdog trigger signal the error signal turns low immediately where the reset is asserted after another delay of half the closed window time. Also shown in the figure are two typical failure modes, one pretrigger and one missing signal.
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TLE 6368 / SONIC been read in at the DI line becomes the new control word. The DO output switches to tristate status at this point, thereby releasing the DO bus circuit for other uses. For details of the SPI timing please refer to Figures 10 to 13. The SPI will be reset to default values given in the following table “write bit meaning” if the RAM good flag of Q_LDO1 indicates a cold start (lower output voltage than 3.3V).
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TLE 6368 / SONIC Write Bit meaning Function Bit Combination Default Reset timing: Reset delay time tRES valid at warm start D10D11 00: 64ms 10: 32ms 01: 16ms 11: 8ms 11 Window watchdog timing: Open window time tOW and closed window time tCW valid at warm start D12D13 00: 128ms 10: 64ms 01: 32ms 11: 16ms 00 Window watchdog function: Enable /disable window watchdog D0D9D14 010: ON 1xx: OFF x0x: OFF xx1: OFF 101 Window watchdog trigger: Enable / disable window watchdog trigger D15 0: not tri
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TLE 6368 / SONIC Read Bit meaning Function Type Bit Combination D0 0: normal operation 0 1: fail function Not latched D1 0: normal operation 0 1: prewarning Not latched D2 D3 D4 D5 D6 D7 1: settled output 1 voltage 0:Tracker turned off or shorted output. Also open load may possibly be indicated as 0.
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TLE 6368 / SONIC 2.12.4 SPI Timings CS High to Low & rising edge of CLK: DO is enabled. Status information is transferred to Output Shift Register CS CS Low to High: Data from Register are transferred to e.g.
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TLE 6368 / SONIC Figure 11 SPI-Input Timing trIN tfIN <10ns 0.7 VQ_LDO1 CLK 50% 0.2 VQ_LDO1 trDO 90% DO (low to high) 10% tVADO tfDO 90% DO (high to low) 10% Figure 12 DO Valid Data Delay Time and Valid Time Data Sheet 21 Rev. 2.
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TLE 6368 / SONIC tfIN trIN <10ns 0.7 VQ_LDO1 CS 50% 0.2 VQ_LDO1 10kΩ 50% Pullup to VQ_LDO1 DO tENDO tDISDO 10kΩ Pulldown 50% to GND DO Figure 13 DO Enable and Disable Time Data Sheet 22 Rev. 2.
PAGE 23
TLE 6368 / SONIC 3 Characteristics 3.1 Absolute Maximum Ratings Item Parameter Symbol Limit Values Min. Max. Unit Test Condition 3.1.1 Supply Voltage Input IN Voltage VIN -0.5 60 V – Voltage VIN -1.0 60 V Tj = -40 °C Current IIN – – – 3.1.2 Buck-Switch Output SW Voltage VSW -2 VS+0.5 V Current ISW – – – – 3.1.3 Feedback and Linear Voltage Regulator Input Voltage VFB/L_IN -0.5 8 V Current IFB/L_IN – – – V 0.5V VSW+ 10V – 3.1.
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TLE 6368 / SONIC 3.1.8 Charge Pump Capacitor Connector C+ Voltage VCH -0.5 13 V Current ICH -150 +150 mA 3.1.9 Charge Pump Storage Capacitor CCP Voltage VCCP -0.5 12 V Current ICCP -150 – mA 3.1.10 Standby Voltage Regulator output Q_STB Voltage VQ_Stb -0.5 6 V – Current IQ_Stb – – – Internally limited 3.1.11 Voltage Regulator output voltage Q_LDO1 Voltage VQ_LDO1 -0.5 6 V – Current IQ_LDO1 – – – Internally limited 3.1.
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TLE 6368 / SONIC 3.1.18 Voltage Tracker output voltage Q_T5 Voltage VQ_T5 -4 40 V – Current IQ_T5 – – mA Internally limited 3.1.19 Voltage Tracker output voltage Q_T6 Voltage VQ_T6 -4 40 V – Current IQ_T6 – – mA Internally limited 3.1.20 Select Input SEL Voltage VSEL -0.5 6 V – Current ISEL – – – Internally limited – 3.1.21 Wake Up Input Wake Voltage VWake -0.5 60 V Current IWake – – – 3.1.22 Reset Output R1 Voltage VR1 -0.
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TLE 6368 / SONIC 3.1.28 SPI Chip Select Not Input CS Voltage VCS -0.5 6 V Current ICS – – – – 3.1.29 Error Output Pin Voltage VERR -0.5 6 V – Current IERR – – – Internally limited 1) 3.1.
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TLE 6368 / SONIC 3.2 Functional Range -40°C < Tj < 150 °C Item Parameter Symbol Limit Values min. Supply Voltage VIN, min Supply Voltage VIN, max Ripple at FB/L_IN VFB/L_IN Condition V VIN increased from 0V; VWAKE =5V; IQ_LDO1=400mA; IQ_LDO2=200mA max. 5.5 0 Unit 60 V 150 mVPP ripple Note: Within the functional range the IC can be operated . The electrical characteristics, however, are not guaranteed over this full functional range. Data Sheet 27 Rev. 2.
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TLE 6368 / SONIC 3.3 Recommended Operation Range -40°C < Tj < 150 °C Item Parameter Symbol Limit Values min. 1) typ. Unit Condition µH 1) ESR <0.15 Ω, ceramic capacitor (X7R) recommended1) max.
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TLE 6368 / SONIC 3.4 Electrical Characteristics The electrical characteristics involve the spread of values guaranteed within the specified supply voltage and ambient temperature range. Typical values represent the median values at room temperature, which are related to production processes. -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. max. 280 370 425 Unit Test Conditions Buck regulator 3.4.1 Switching frequency fSW 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. Unit Test Conditions 6.3 V IOUT=0.1A VIN=13.5 V 220 µA max. 3.4.11 Output voltage VOUT 5.4 3.4.12 Bootstrap charging current at start-up IBTSTR 80 3.4.13 Bootstrap voltage (internal charge pump) VBTSTR 10 15 V 5 9 V VBTSTR, 3.4.14 Bootstrap undervoltage turn on lockout, Buck turn on threshold VBTSTR, 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. 3.4.21 Load Regulation ∆VQ_LDO1 40 3.4.22 Current limit IQ_LDO1limit 800 1050 3.4.23 Ripple rejection PSRR1 26 40 3.4.24 Output Capacitor CQ_LDO1 470 Unit Test Conditions mV 100mA< IQ_LDO1 <800mA; VFB/L_IN=5.5V mA VQ_LDO1=4V dB f=330kHz; 1) nF Ceramic type, value for stability V 50mA < IQ_LDO2 < 400mA; 3.3V mode V IQ_LDO2 =400mA; 3.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. 40 3.4.34 Ripple rejection PSRR2 26 3.4.35 Output Capacitor CQ_LDO2 470 Unit Test Conditions dB f=330kHz; 1) nF Ceramic type, value for stability V 20mA < IQ_LDO3 < 300mA; 3.3V mode V IQ_LDO3 =300mA; 3.3V mode V 20mA < IQ_LDO3 < 300mA; 2.6V mode max. Voltage Regulator Q_LDO3 3.4.36 Output voltage 3.3V VQ_LDO3 3.4.37 Output voltage 3.3V VQ_LDO3 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. max. -15 -2 5 Unit Test Conditions mV VQ_T1-VQ_LDO1; 1mA < IQ_T1 < 17mA 3.4.46 Output voltage tracking accuracy ∆VQ_T1 3.4.47 Output voltage tracking accuracy ∆VQ_T1 -10 mV VQ_T1-VQ_LDO1; IQ_T1 = 17mA 3.4.48 Overvoltage threshold VOVQ_T1 VQ_T1, mV IQ_T1 = 0mA; 1) mV 1) mA VQ_T1=4V nom 3.4.49 Undervoltage VUVQ_T1 threshold VQ_T115mV 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. 3.4.59 Tracker load CQ_T2 capacitor typ. Unit Test Conditions µF Ceramic type, minimum for stability mV VQ_T3-VQ_LDO1; 1mA < IQ_T3 < 17mA max. 1 Voltage Tracker Q_T3 3.4.60 Output voltage tracking accuracy ∆VQ_T3 3.4.61 Output voltage tracking accuracy ∆VQ_T3 -10 mV VQ_T3-VQ_LDO1; IQ_T3 = 17mA 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. 3.4.70 Undervoltage VUVQ_T4 threshold typ. Unit Test Conditions mV 1) mA VQ_T4=4V max. VQ_T415mV 3.4.71 Current limit IQ_T4 limit 17 3.4.72 Ripple rejection PSRR 26 dB f=330kHz; 1) 1 µF Ceramic type, minimum for stability mV VQ_T5-VQ_LDO1; 1mA < IQ_T5 < 17mA 3.4.73 Tracker load CQ_T4 capacitor 30 Voltage Tracker Q_T5 3.4.74 Output voltage tracking accuracy ∆VQ_T5 3.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. Unit Test Conditions max. 3.4.82 Output voltage tracking accuracy ∆VQ_T6 -9 mV VQ_T6-VQ_LDO1; IQ_T6 = 17mA 3.4.83 Overvoltage threshold VOVQ_T6 VQ_T6 mV IQ_T6 = 0mA; 1) VQ_T615mV mV 1) mA VQ_T6=4V 3.4.84 Undervoltage VUVQ_T6 threshold 3.4.85 Current limit IQ_T6 limit 17 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. Unit Test Conditions V Vwake decreasing max. 3.4.94 Turn off Wake-up threshold Vwake th, off 1.8 2.35 3.4.95 Wake-up input current Iwake 50 150 µA Vwake=5V 4 10 50 µs Vwake > Vwake th, max; 1) 4.5 4.65 4.8 V VQ_LDO1 decreasing 4.55 4.70 4.9 V VQ_LDO1 increasing 3.4.99 Reset output VR1 L low voltage 0.4 V IR1=1.6mA; VQ_LDO1 =5V 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol 3.4.105 Reset threshold Q_LDO2 VRTH 3.4.106 Reset threshold hysteresis Q_LDO2 VRTH Limit Values min. typ. max. 2.3 2.4 2.5 Unit Test Conditions V 2.6V mode; VQ_LDO2 decreasing mV 2.6V mode Q_LDO2, de Q_LDO2, in 40 - VRTH Q_LDO2, de 3.4.107 Reset output VR2 L low voltage 0.4 V IR2=1.6mA; VQ_LDO2 =2.5V 3.4.108 Reset output VR2 L low voltage 0.3 V IR2=0.3mA; VQ_LDO2 =1V µA VQ_LDO2 =0.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. 3.4.116 Reset output VR3 L low voltage 3.4.118 Reset High leakage current 10 IR3 H 3.4.119 Reset trr reaction time 1 2 Test Conditions V IR3=0.3mA; VQ_LDO3 =1V µA VQ_LDO3 =0.75V; Tj > 25°C max. 0.3 3.4.117 Reset output IR3 L low sink current Unit 1 µA 10 µs 1) Valid for R1, R2 and R3 3.4.120 Reset Delay Norm factor tNORM,RES 0.75 1 1.25 1 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. 3.4.127 Watchdog reset low time tWRL tRES 3.4.128 Watchdog reset delay time tSR tCW/2 Unit Test Conditions – V IERR, H = 1 mA 0.5 V IERR, L = – 1.6 mA 2.5 MHz Production test up to 1MHz; For 2.5MHz: 1) 70 % of – max. Error Output ERR 3.4.129 H-output voltage level VERR,H 3.4.130 L-output voltage level VQ_LDO1 VQ_LDO1 – 2.0 – 0.7 VERR,L – 0.3 fCLK 0 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values min. typ. max. 40 70 3.4.139 H-input voltage threshold VIH – 3.4.140 L-input voltage threshold VIL 20 3.4.141 Hysteresis of VIHY input voltage Unit Test Conditions % of – VQ_LDO1 36 – % of – VQ_LDO1 50 200 500 mV 1) 3.4.142 Pull down current II 5 25 100 µA VCLK = 0.2 * VQ_LDO1 3.4.143 Input capacitance CI – 10 15 pF 0 V < VQ_LDO1 < 5.25 V 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values Unit Test Conditions min. typ. max. VQ_LDO1 VQ_LDO1 – V – 1.0 – 0.8 IDOH = 1 mA Logic Output DO 3.4.153 H-output voltage level VDOH 3.4.154 L-output voltage level VDOL – 0.2 0.4 V IDOL = – 1.6 mA 3.4.155 Tri-state leakage current IDO_TRI – 10 – 10 µA VCS = VQ_LDO1; 0 V < VDO < VQ_LDO1 3.4.
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TLE 6368 / SONIC -40 < Tj <150 °C; VIN=13.5V unless otherwise specified Item Parameter Symbol Limit Values Unit Test Conditions min. typ. max. – 50 100 ns CL = 100 pF tfDO tENDO – 50 100 ns CL = 100 pF – – 250 ns low impedance tDISDO – – 250 ns high impedance 3.4.170 DO valid time tVADO – 100 250 ns VDO < 10% VDO > 90% CL = 100 pF °C 2) °C 2) 3.4.166 DO rise time trDO 3.4.167 DO fall time 3.4.168 DO enable time 3.4.169 DO disable time General 3.4.
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TLE 6368 / SONIC 4 Typical charcteristics performance Buck converter DMOS on-resistance vs. junction temperature Buck converter switching frequency vs. junction temperature fSW kHz 420 RON mΩ 400 400 350 380 300 360 250 340 200 320 150 300 100 280 -50 -20 10 40 70 100 130 Tj 50 -50 160 -20 10 40 70 100 130 Tj 160 °C °C Buck converter output voltage at 1.5A load Buck converter current limit vs. junction temperature vs. junction temperature VFB/L_IN V 6.0 IMAX A 4.
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TLE 6368 / SONIC Bootstrap UV lockout, turn on threshold vs. junction temperature Start-up bootstrap charging current vs. junction temperature IBTSTR µA VBTSTR, 8.5 280 turn on V 240 8.0 200 7.5 160 7.0 120 6.5 80 6.0 40 5.5 0 -50 -20 10 40 70 100 130 Tj 5.0 -50 160 -20 10 40 70 100 130 Device wake up thresholds vs. junction temperature Device start-up voltage (acc. to spec. 3.2) vs. junction temperature V 6.0 Vwake th V 2.8 5.5 2.7 5.0 2.6 4.5 2.5 4.0 2.4 3.
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TLE 6368 / SONIC Q_LDO1 current limit vs. junction temperature Q_LDO1 output voltage at 800mA load vs. junction temperature VQ_LDO1 V 5.20 IQ_LDO1 V 5.15 1400 1300 5.10 1200 5.05 1100 5.00 1000 4.95 900 4.90 800 4.85 -50 -20 10 40 70 100 130 Tj 700 -50 160 -20 10 40 70 100 °C 4.80 VQ_LDO2 V 2.80 4.75 2.75 4.70 2.70 4.65 2.65 4.60 2.60 4.55 2.55 4.50 2.50 4.45 -50 -20 10 40 70 100 130 Tj 160 °C Data Sheet 160 Q_LDO2 output voltage at 400mA load (2.
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TLE 6368 / SONIC Reset2 threshold at decreasing V_LDO2 (2.6V mode) vs. junction temperature Q_LDO2 current limit (2.6V mode) vs. junction temperature IQ_LDO2 V VRTH 850 2.60 Q_LDO2, de V 800 2.55 750 2.50 700 2.45 650 2.40 600 2.35 550 2.30 500 -50 -20 10 40 70 100 130 Tj 2.25 -50 160 -20 10 40 70 100 130 °C °C Q_LDO3 current limit (3.3V mode) vs. junction temperature Q_LDO3 output voltage at 300mA load (3.3V mode) vs. junction temperature VQ_LDO3 V 3.
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TLE 6368 / SONIC Tracker accuracy with respect to V_LDO1 vs. junction temperature Reset3 threshold at decreasing V_LDO3 (3.3V mode) vs. junction temperature VRTH 3.00 dVQ_Tx Q_LDO3, de V mV 4 2.95 2 2.90 0 2.85 -2 2.80 -4 2.75 -6 2.70 -8 2.65 -50 -20 10 40 70 100 130 Tj -10 -50 160 -20 10 40 70 100 130 °C mA Q_STB output voltage at 500µA load vs. junction temperature 32 VQ_STB V 30 2.8 2.7 28 2.6 26 2.5 24 2.4 22 2.3 20 2.
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TLE 6368 / SONIC Q_STB current limit vs. junction temperature IQ_STB mA Device current consumption in off mode vs. junction temperature 4.0 Iq, off µA 3.5 35 30 3.0 25 2.5 20 2.0 15 1.5 10 1.0 5 0.5 -50 -20 10 40 70 100 130 Tj 160 °C Data Sheet 0 -50 -20 10 40 70 100 130 Tj 160 °C 49 Rev. 2.
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TLE 6368 / SONIC 5 Application Information 5.1 Application Diagram RBoost 22 Ω TLE 6368 DBOOST Battery CI1 CSTB BOOST 100 nF Up to 47 µH Q_STB 100 nF CBOOST LI Standby Regulator 2.
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TLE 6368 / SONIC 5.2 Buck converter circuit A typical choice of external components for the buck converter is given in figure 14. For basic operation of the buck converter the input capacitor CI2, the bootstrap capacitor CBTP, the catch diode DB, the inductance LB, the output capacitor CB and the charge pump capacitors CFLY and CCCP are necessary. A Zener Diode at the FB/L_IN input is recommended as a protection against overvoltage spikes.
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TLE 6368 / SONIC 5.2.2 Buck output capacitor (CB) selection: The choice of the output capacitor effects straight to the minimum achievable ripple which is seen at the output of the buck converter.
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TLE 6368 / SONIC 5.2.5 Bootstrap capacitor (CBTP) The voltage at the Bootstrap capacitor does not exceed 15V, a ceramic type with a minimum of 2% of the buck output capacitance and voltage class 16V would be sufficient. 5.2.6 External charge pump capacitors (CFLY, CCCP) Out of the feedback voltage the charge pump generates a voltage between 8 and 10V.
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TLE 6368 / SONIC 5.3 Reverse polarity protection The Buck converter is due to the parasitic source drain diode of the DMOS not reverse polarity protected. Therefore, as an example, the reverse polarity diode is shown in the application circuit, in general the reverse polarity protection can be done in different ways. 5.4 Linear voltage regulators (CLDO1, 2, 3) As indicated before the linear regulators show stable operation with a minimum of 470nF ceramic capacitors.
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TLE 6368 / SONIC 5.7 Components recommendation - overview Device Type Supplier Remark LI B82479 EPCOS 22µH, 3.5A, 47mΩ DO3340P-473 Coilcraft 47µH, 3.8A, 110mΩ DO5022P-683 Coilcraft 68µH, 3.5A, 130mΩ DS5022P-473 Coilcraft 47µH, 4.0A, 97mΩ SLF12575T-330M3R2H TDK 33µH, 3.2A CI1 Ceramic various 100nF, 60V CI2 Low ESR tantalum various 47µF, 60V CI3 Ceramic various 10nF to 100nF, 60V DBoost S3B various LB B82479 EPCOS 22µH, 3.5A, 47mΩ DO3340P-473 Coilcraft 47µH, 3.
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TLE 6368 / SONIC 5.8 Layout recommendation The most sensitive points for Buck converters - when considering the layout - are the nodes at the input and the output of the Buck switch, the DMOS transistor. For proper operation the external catch diode and Buck inductance have to be connected as close as possible to the SW pins (29, 31). Best suitable for the connection of the cathode of the Schottky diode and one terminal of the inductance would be a small plain located next to the SW pins.
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TLE 6368 / SONIC 6 Package Outlines PG-DSO-36-26 SMD = Surface Mounted Device +0.07 -0.02 6.3 5˚ ±3˚ Heatslug 0.1 C 36x 0.95 ±0.15 0.25 M A B C 17 x 0.65 = 11.05 14.2 ±0.3 0.25 B Bottom View 19 36 19 5.9 ±0.1 0.25 +0.13 36 0.25 1.3 15.74 ±0.1 (Heatslug) B 2.8 3.2 ±0.1 0.65 11 ±0.15 1) 3.5 MAX. 0 +0.1 1.1 ±0.1 3.25 ±0.1 2) Dimensions in mm Index Marking 1 x 45˚ 1 18 15.9 ±0.1 1) 10 13.7 -0.2 1 Heatslug A 1) Does not include plastic or metal protrusion of 0.15 max.
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TLE 6368 / SONIC TLE 6368 / SONIC Revision History: 2006-12-01 Previous Version: 2.1 Rev. 2.2 Page Subjects (major changes since last revision) general Updated Infineon logo #1 Added “AEC” and “Green” logo #1 Added “Green Product” and “AEC qualified” to the feature list #1 Updated Package Name #57 Added “Green Product” remark #59 Disclaimer Update Data Sheet 58 Rev. 2.
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TLE 6368 / SONIC Edition 2006-12-01 Published by Infineon Technologies AG 81726 München, Germany © Infineon Technologies AG 2007. All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics (“Beschaffenheitsgarantie”).