Multifunctional Voltage Regulator and Watchdog

www.DataSheet4U.com Multifunctional Voltage Regulator and Watchdog TLE 6363 Preliminary Data Sheet Overview Features • • • • • • • • • • • • • Step up converter (Boost Voltage) Boost Over- and Under-Voltage-Lockout Step down converter (Logic Voltage) 2% output voltage tolerance Logic Over- and Under-Voltage-Lockout Overtemperature Shutdown Power ON/OFF reset generator Digital window watchdog System Enable Output Ambient operation temperature range – 40 C to 125 C Wide Supply voltage operation range Very low current consumption Very small P-DSO-14-2 SMD package Ordering Code on request   P-DSO-14-2 Type TLE 6363 G Functional Description General Package P-DSO-14-2 The TLE 6363 G is a multifunctional power supply circuit especially designed for automotive applications. It delivers a programmable step up voltage (Boost) and a precise 5 V fully short circuit protected output voltage (Buck). The TLE 6363 G contains a power on reset feature to start up the system, an integrated digital window watchdog to monitor the connected microcontroller and a system enable output to indicate the microcontroller window watchdog faults. The device is based on Infineon’s power technology SPT® which allows bipolar and CMOS control circuitry to be integrated with DMOS power devices on the same monolithic circuitry. The very small P-DSO-14-2 SMD packages meet the application requirements. Data Sheet V 1.1 1 2000-11-8 www.DataSheet4U.com TLE 6363 Furthermore, the build-in features like under- and overvoltage lockout for boost- and buck-voltage and the overtemperature shutdown feature increase the reliability of the TLE 6363 G supply system. Pin Definitions and Functions Pin No. SO-14 1 2 3 4 5 6 Symbol Function R RO WDI GND SEN BUC Reference Input; an external resistor from this pin to GND determines the reference current and the oscillator frequency Reset Output; open drain output from reset comparator with an internal pull up resistor Watchdog Input; input for the watchdog control signal from the controller Ground; analog signal ground System Enable Output; open drain output from Watchdog fail-circuit with an internal pull up resistor Buck-Converter Compensation Input; output of internal error amplifier; for loop-compensation connect an external R-C-series combination to GND Supply Voltage Output; buck converter output; external blocking capacitor necessary Buck Converter Output; source of the integrated power-DMOS Boost Converter Input; input supply voltage of the IC; coming from the boost converter output voltage; buck converter input voltage Buck Driver Supply Input; voltage to drive the buck converter powerstage Boost Status Output; open drain output from boost PWM comparator Boost Converter Feedback Input; connect boost voltage divider to this pin; internal reference is the boost feedback threshold 7 8 9 VCC BUO VBOOST 10 11 12 BDS OVL BOFB VBOFBTH 13 14 BOGND Boost-Ground; power signal ground; source of boost converter power-DMOS BOI Boost Converter Input; drain of the integrated buck converter power-DMOS Data Sheet V 1.1 2 2000-11-8 www.DataSheet4U.com TLE 6363 Pin Configuration R RO WDI GND SEN BUC VCC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 AEP02960 BOI BOGND BOFB OVL BDS VBoost BUO Figure 1 Pin Configuration (top view) Data Sheet V 1.1 3 2000-11-8 www.DataSheet4U.com TLE 6363 Block Diagram TLE 6363 G BOFB 12 14 Boost Converter BOI BOGND BDS 13 10 Biasing VBoost VREF 9 BUC 6 Buck Converter VBOOST BUO 8 7 VInternal 5 Reference Current Generator and Oscillator Reset, Window Watchdog and System Enable VCC SEN 3 R 1 WDI 2 RO 11 4 GND OVL AEB03008 Figure 2 Block Diagram Data Sheet V 1.1 4 2000-11-8 www.DataSheet4U.com TLE 6363 Absolute Maximum Ratings Parameter Symbol Limit Values min. Voltages Boost input voltage Boost output voltage Boost feedback voltage Buck output voltage Buck driver supply voltage Buck compensation input voltage Logic supply voltage Reset output voltage System Enable output voltage Current reference voltage Watchdog input voltage OVL output voltage max. Unit Remarks VBOI VBOOST VBOFB VBUO VBDS VBUC VCC VRO VSEN VR VWDI VOVL – 0.3 – 0.3 – 0.3 –1 – 0.3 – 0.3 – 0.3 – 0.3 – 0.3 – 0.3 – 0.3 – 0.3 46 46 46 46 48 6.8 6.8 6.8 6.8 6.8 6.8 6.8 V V V V V V V V V V V V – – – – – – – – – – – – ESD-Protection (Human Body Model; R = 1.5 kτ; C = 100 pF) All pins to GND Temperatures  VHBM –2 2 kV – Junction temperature Storage temperature Note: Stresses above those listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Data Sheet V 1.1 5  Tj Tstg – 40 – 50 150 150 C C – – 2000-11-8 www.DataSheet4U.com TLE 6363 Operating Range Parameter Boost input voltage Boost input voltage; (normal operation) Boost input voltage; (normal operation) Boost input voltage Symbol Limit Values min. max. 40 35 36 4.5 V V V V – – 0.3 5 4.5 – 0.3 Unit Remarks VBOI VBOOST VBOOST VBOOST VBOOST increasing VBOOST decreasing Boost- and Buck-Converter OFF – – – – – – – – – – VBOFB Buck output voltage VBUO Buck driver supply voltage VBDS VBUC Buck compensation input Boost feedback voltage voltage Logic supply voltage Reset output voltage System Enable output voltage Watchdog input voltage Current reference voltage Junction temperature Thermal Resistance Junction ambient 0 – 0.6 – 0.3 0 4.00 – 0.3 – 0.3 0 0 – 40 3.0 40 48 3.0 6.25 V V V V V VCC VRO VSEN VWDI VR Tj VCC + 0.3 V VCC + 0.3 V VCC + 0.3 V 3.0 150 V C  Rthj-a – 120 K/W – Note: In the operating range, the functions given in the circuit description are fulfilled. Data Sheet V 1.1 6 2000-11-8 www.DataSheet4U.com TLE 6363 Electrical Characteristics 8 V < VBoost < 35 V; 4.75 V < VCC < 5.25 V; – 40 C < Tj < 150 C; RR = 47 kτ; all voltages with respect to ground; positive current defined flowing into pin; unless otherwise specified. Parameter Symbol Limit Values min. Current Consumption Current consumption; see application circuit Current consumption; see application circuit typ. max.   Unit Test Conditions IBoost IBoost – – 1.5 5 4 10 ICC = 0 mA; IBoLoad = 0 mA mA ICC = 200 mA; IBoLoad = 50 mA mA Under- and Over-Voltage Lockout at VBoost UV ON voltage; boost and buck conv. ON UV OFF voltage; boost and buck conv. OFF UV Hysteresis voltage OV OFF voltage; boost conv. OFF OV ON voltage; boost conv. ON OV Hysteresis voltage VBOUVON 4.0 VBOUVOFF 3.5 VBOUVHY 0.2 VBOOVOFF 34 VBOOVON 30 VBOUVHY 1.5 4.5 4.0 0.5 37 33 4 5.0 4.5 1.0 40 36 10 V V V V V V VBOOST increasing; VBOOST decreasing HY = ON - OFF VBOOST increasing VBOOST decreasing HY = OFF - ON Over-Voltage Lockout at VCC OV OFF voltage; buck conv. OFF OV ON voltage; buck conv. ON OV Hysteresis voltage VBUOVOFF 5.5 VBUOVON 5.25 VBUOVHY 0.10 6.0 5.75 0.25 6.5 6.25 0.50 V V V VCC increasing VCC decreasing HY = OFF - ON Data Sheet V 1.1 7 2000-11-8 www.DataSheet4U.com TLE 6363 Electrical Characteristics (cont’d) 8 V < VBoost < 35 V; 4.75 V < VCC < 5.25 V; – 40 C < Tj < 150 C; RR = 47 kτ; all voltages with respect to ground; positive current defined flowing into pin; unless otherwise specified. Parameter Symbol Limit Values min. Boost-Converter; BOI, BOFB and VBOOST Boost voltage; see application circuit Boost Voltage; see application circuit Efficiency; see. appl. circuit Power-Stage ON resistance Power-Stage ON resistance typ. max.   Unit Test Conditions VBOOST 24.0 27.5 31.0 V 5 mA < IBoost < 100 mA; Tj = 25 C 8 V < VBatt < 16 V 5 mA < IBoost < 100 mA; 8 V < VBatt < 16 V  VBOOST 23 – 32 V – – – 1.0 2.55 –2 80 0.6 – 1.3 2.7 – 0.75 1.4 1.8 2.85 % τ Boost overcurrent threshold IBOOC Feedback threshold voltage VBOFBTH Feedback input current Buck-Converter; BUO, BDS, BUC and VCC Logic supply voltage VCC 4.9 – 5.1 Buck overcurrent threshold IBUOC Input current on pin VCC Data Sheet V 1.1 0.7 – 8 0.95 0.2 1.2 0.5 ICC τ Power-Stage ON resistance RBUON – – 1.0 A mA – VCC = 5 V 2000-11-8  τ Power-Stage ON resistance ♣ Efficiency; see. appl. circuit – – 85 0.38 – 0.5 % RBUON ← IFB – 0.4 0 τ RBOON A V A – VBOI = 12 V IBoost = 25 mA 2 V < VBOFB< 4 V V 1 mA < ICC < 250 mA; see. appl. circuit ICC = 250 mA; VBoost = 25 V Tj = 25 C; IBUO = 1 A IBUO = 1 A  RBOON IBoost = 100 mA Tj = 25 C; IBOI = 1 A IBOI = 1 A ♣ www.DataSheet4U.com TLE 6363 Electrical Characteristics (cont’d) 8 V < VBoost < 35 V; 4.75 V < VCC < 5.25 V; – 40 C < Tj < 150 C; RR = 47 kτ; all voltages with respect to ground; positive current defined flowing into pin; unless otherwise specified. Parameter Buck Gate supply voltage; VBGS = VBDS – VBOOST Symbol Limit Values min. typ. – max. 10 V – 5   Unit Test Conditions VBGS Reference Input; R (Oscillator; Timebase for Boost- and Buck-Converter, Reset and Watchdog) Voltage on pin R Oscillator frequency Oscillator frequency Cycle time for watchdog and reset timing Reset Generator; RO Reset threshold; VCC decreasing/increasing 75 – – 1.05 115 – kHz – ms tCYL = 100/fOSC VRT 4.50 4.65 4.75 V VRO H to L or L to H transition; VRO remains low down to VCC > 1 V Reset low voltage Reset low voltage Reset high voltage Reset pull up current Reset Reaction time Power-up reset delay time VROL VROL VROH IRO tRR tRD – – 0.2 0.2 0.4 0.4 V V VCC – – 0.1 – 50 – 240 100 64 VCC + V 0.1 150 – ← IROL = 2 mA; 2.5 V < VCC < VRT IROL = 0.2 mA; 1 V < VCC < VRT IROH = 0 mA 0 V < VRO < 4 V – A s Data Sheet V 1.1 9 ∫ tCYL VCC < VRT VCC 4.8 V  VR fOSC fOSC tCYL 1.3 85 1.4 95 1.5 105 V – kHz Tj = 25 C ← 2000-11-8 www.DataSheet4U.com TLE 6363 Electrical Characteristics (cont’d) 8 V < VBoost < 35