MC33394DH Freescale Semiconductor, MC33394DH Datasheet

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... Freescale Semiconductor, Inc. Switch Mode Power Supply with Multiple Linear Regulators and High Speed CAN Transceiver The 33394 is a multi–output power supply integrated circuit with high speed CAN transceiver. The IC incorporates a switching pre–regulator operating over a wide input voltage range from +4.0V to +26.5V (with transients up to 45V) ...

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... Freescale Semiconductor, Inc. Figure 1. 33394DH – Simplified Block Diagram and Typical Application To Q3 Lf1 m 6.8 H Dp1 VBAT + + Cf1 Cf2 m m Dp2 10 F 100 F – KA_VBAT 3 ON 4.7 k VIGN Control 4 OFF 10 nF VKAM 2 Keep–Alive Adj. Volt. m VKAM_FB VSEN VBAT Volt. 125 mA 7 T– ...

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... Freescale Semiconductor, Inc. PIN FUNCTION DESCRIPTION (44–HSOP Package) PIN NO. NAME 1 VBAT Battery supply to IC (external reverse battery protection needed in some applications) 2 VBAT Battery supply to IC (external reverse battery protection needed in some applications) 3 KA_VBAT Keep alive supply (with internal protection diode) 4 VIGN Turn– ...

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... Freescale Semiconductor, Inc. PIN FUNCTION DESCRIPTION (44–QFN Package) PIN NO. NAME 1 GND Ground 2 SW2G External power switch (MOSFET) gate drive — Boost Reg. 3 BOOT Bootstrap capacitor 4 SW1 Source of the internal power switch (n–channel MOSFET) 5 SW1 Source of the internal power switch (n–channel MOSFET) ...

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... Freescale Semiconductor, Inc. PIN FUNCTION DESCRIPTION (54 SOICW–EP Package) PIN NO. NAME 1 GND Ground 2 CANL CAN differential bus drive low line 3 CANH CAN differential bus drive high line 4 HRT Hardware Reset Timer pin (programmed with external capacitor and resistor) 5 /SLEEP Sleep Mode & Power Down control ...

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... Freescale Semiconductor, Inc. 1. MAXIMUM RATINGS (Maximum Ratings indicate sustained limits beyond which damage to the device may occur. Voltage parameters are absolute voltages referenced to ground.) Parameter Supply Voltage (VBAT), Load Dump Supply Voltage (KA_VBAT, VIGN), Load Dump Supply Voltages (VDDH, VPP, VDD3_3, VDDL, VKAM) Supply Voltages (VREF1, VREF2, VREF3, VSEN) CANL, CANH (0< ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: GENERAL Start Up Voltage Power Dissipation, VBAT = 13.3 V (Buck Mode) Undervoltage Shut Down Battery Input Current, Power Down Mode, VIGN = 0 V; REGON = VKAM = 0 mA, VBAT = 13.3 V; Battery Voltage = 14 V Battery Input Current, Keep Alive Mode VIGN = 0 ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: BUCK CONVERTER Buck Converter Output Voltage, VBAT = 7.5V to 18V; I LOAD =500mA Buck to Boost Mode Threshold Voltage Boost to Buck Mode Threshold Voltage N–channel power MOSFET SW1 SW1 Drain–Source Breakdown Voltage SW1 Continuous Drain Current SW1 Drain– ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: VDDH VDDH Output Voltage, I VDDH = –400 mA; VDDH Load Regulation, VBAT = 13 VDDH = 0 to –400 mA; VDDH Line Regulation, VBAT = 4 26 VDDH = –400 mA; VDDH Drop Out Voltage, VPRE – VDDH, I VDDH = –400 mA; ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: VKAM VKAM Feedback Reference Voltage, pin VKAM_FB Normal Mode (switcher running), I VKAM = 0 to –50mA VKAM Load Regulation, VBAT = 13 VKAM = –0 to –50 mA VKAM Line Regulation, VBAT = 4 26 VKAM = –50 mA VKAM Tracking to VDDL Voltage, VDDL – ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: VREF1 VREF Output Voltage, I VREF = –100 mA VREF Load Regulation, VBAT = 13 VREF = 0 to –100 mA VREF Line Regulation, VBAT = 4 26 VREF = –100 mA VREF Tracking to VDDH Voltage, VDDH – VREF, VBAT = 4 26 VREF = 0 to – ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: SUPERVISORY OUTPUTS Reset Voltage Thresholds /HRESET to follow /PRERESET by 0.7 s VDDH Reset Upper Threshold Voltage VDDH Reset Lower Threshold Voltage VDD3_3 Reset Upper Threshold Voltage VDD3_3 Reset Lower Threshold Voltage ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: CAN Transceiver (Bus Load CANH to CANL Vdiff = V CANH – V CANL ) CAN Transceiver Supply Current (dominant), V CANTXD = 0V CAN Transceiver Supply Current (recessive), V CANTXD = VDDH Transmitter Data Input CANTXD High– ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: CAN Transceiver (Continued) (Bus Load CANH to CANL Vdiff = V CANH – V CANL ) CANH,CANL impedance CANH Common Mode Input Resistance CANL Common Mode Input Resistance CANH, CANL Common Mode Input Resistance Mismatch 100(R iCANH – ...

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... Freescale Semiconductor, Inc. 3. ELECTRICAL CHARACTERISTICS (–40 C circuit – see Figure 1, unless otherwise noted.) Characteristic DC CHARACTERISTICS: SPI DO Output High Voltage –100 A DO Output Low Voltage 1 Tri–state Leakage Current CS, SCLK, DI Input High Voltage CS, SCLK, DI Input Low Voltage CS, SCLK, DI Input Voltage Threshold Hysteresis CS, SCLK, DI Pull– ...

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... Freescale Semiconductor, Inc. The 33394 is an integrated buck regulator/linear supply specifically designed to supply power to the Motorola MPC55x/MPC56x microprocessors. A detailed functional description of the Buck Regulator, Linear Regulators, Power Up/Down Sequences, Thermal Shutdown Protection, Can Transceiver Reset Functions and Reverse Battery Function are given below. Block diagram of the 33394 is given in Figure 1 ...

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... Freescale Semiconductor, Inc. 4.2.6. Switching Regulator Output Voltage Sense (VPRE_S) This is the switching regulator output voltage sense input. The switcher output voltage VPRE is divided by an internal VBAT SOFT START SWITCHER MODE ENABLE V bg THERMAL LIMIT Figure 4. Switching Regulator Block Diagram 4.3. Voltage Regulator (VDDH) The VDDH output is a linearly regulated +5.0 +/– ...

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... Freescale Semiconductor, Inc. battery (+18 V) and short to –2.0 V. Precautions must be taken to protect the VREF pins from exposure to transients. See Table 1 for recommended output capacitor parameters. 4.5.1. VREF Over Temperature Latch Off Feature If either the VREF1, VREF2 or VREF3 outputs is shorted to ground for any duration of time, an over temperature shut down circuit disables the output source transistor once the local die temperature exceeds +150 C to +190 C ...

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... Freescale Semiconductor, Inc. the trip–off temperature. The output will periodically turn on and off until either the die temperature decreases or until the fault condition is removed. If the VSEN output goes into over—temperature shutdown, it does not impact the operation of any of the other outputs (assuming that no other package thermal or VPRE current limit specifications are violated) ...

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... Freescale Semiconductor, Inc. 33394 Output VDDH VDD3_3 VDDL 2 VIGN 3 1 VKAM /PORESET 10ms /PRERESET /HRESET HRT DELAY 1 Module connected to the battery, VKAM starts to regulate, /PORESET is released after VKAM is in regulation for 10 ms. 2 VIGN is applied, 33394 starts power up sequence. 3 VDDH, VDD3_3, VDDL are stable and in regulation before /PRERESET and /HRESET are released (with a HRT delay programmable by an external capacitor and resistor, HRT pin) ...

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... Freescale Semiconductor, Inc. 4.15. SPI Interface to Microcontroller (Serial Peripheral Interface) The pins specified for this function are: DI (Data Input), DO (Data Output), CS (Chip Select) and SCLK. Refer to Figure 3 for the 33394 SPI timing information. The delay, which is needed from CS leading edge active to the first SCLK leading edge transition ( approximately 125 ns ...

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... Freescale Semiconductor, Inc. 33394 SPI Registers: Serial Output Data/Status Default Value 0 0 Bit 15 14 Name Bit Definitions: Bit Default Value 0 0 Bit 7 6 Name VSEN–T VREF3–T Bit Definitions: Bit 7 — VSEN–T: – Will be set (1 thermal limit occurred since last SPI data transfer Bit 6 — ...

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... Freescale Semiconductor, Inc. The Wake–up function can be disabled through SPI by setting the WKUP bit to 0. The CAN transceiver of the 33394 is designed for communications speeds up to 1.0 Mbps. The use of a common mode choke may be required in some applications. When the 33394 CAN transceiver physical interface is not used in the system design, the CAN bus driver pins CANH and CANL should be shorted together ...

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... Freescale Semiconductor, Inc. ICANH Battery 16 V CANH VBAT ICANL VIGN W 51 CANL POWER OAK VDDH W 68 –2V VDD3_3 W 43 VDDL W 43 GND Figure 11. CAN Loss of Ground Test Circuit For More Information On This Product, 24 33394 Battery VBAT VIGN W 51 POWER + –2V – ...

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... Freescale Semiconductor, Inc. This section provides information on external components that are required by the 33394. The IC is designed to operate in an automotive environment. Conducted immunity and radiated emissions requirements have been addressed during the design. However, the IC requires some external protection. Protection is required for all pins connected directly to battery ...

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... Freescale Semiconductor, Inc. Table 1. Linear Regulator Output Capacitor Examples Output Value/Rating VDDH 100uF/10V VPP 33uF/10V VDD3_3 68uF/6.3V VDDL 100uF/6.3V VREFx 10uF/16V VKAM* 100uF/6.3V 5.2. Switching Regulator Operation The 33394 switching regulator circuit consists of two basic switching converter topologies. One is the typical voltage mode PWM step– ...

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... Freescale Semiconductor, Inc POWER SWITCH D(fwd) POWER SWITCH OFF Figure 13. Basic Buck Converter Operation and its Waveforms Boost Mode The operation of the boost converter also consists of two parts, when the power switch is on and off. When the power switch turns on, the input voltage source is placed directly ...

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... Freescale Semiconductor, Inc. Where the average output current. The inductor peak current is given by the following equation POWER SWITCH OFF V IN POWER SWITCH OFF Figure 14. Basic Boost Converter Operation and its Waveforms 5.2.1. Switching Regulator Component Selection The selection of the external inductor L2 and capacitor C2 ...

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... Freescale Semiconductor, Inc. After substitution, the calculated inductance value which gives 47 H standard component value. The peak–to peak ripple current value is 0.345 A. The peak inductor current is given by: I Lpk = 0 0.5x0.345 + 1.2 = 1.37[A] The inductor saturation current is given by the upper value of the 33394 internal switch current limit I lim(max ...

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... Freescale Semiconductor, Inc. 5.2.1.4. Selecting the Power MOSFET Q2 The boost converter maximum output voltage plus the voltage drop across the output schottky rectifier D2 gives the MOSFET’s maximum drain–source voltage stress: BV dsQ2 > fwd2 = 6 V+0 can be seen, the breakdown voltage parameter is not critical. ...

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... Freescale Semiconductor, Inc VPRE_S E/A – Ref Figure 18. Error Amplifier Two–Pole–Two–Zero Compensation Network The process of determining the right compensation components starts with analysis of the open loop (modulator) transfer function, which has to be determined and plotted into the Bode plot (see Figure 19). The modulator DC gain can be ...

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... Freescale Semiconductor, Inc. Table 2. Part number Application diagram (Figure 18) part number (Figure 1) R1 33394 internal resistor 5.3. Selecting Pull–Up Resistors All the Resets (/PORESET, /PRERESET and /HRESET) are open drain outputs, which can sink a maximum drain current. This determines the pull–up resistor minimum value. VKAM should be used as the pull– ...

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... Freescale Semiconductor, Inc. JP1 MURS320T3 +Battery 1 2 VDDH SW1 DIP–2 C29 R14 1.0uF/50V VPP_EN 4.7k IGN VIGN R3 C28 4.7k VKAM 10nF + C23 10nF C24 22uF VREF1 C8 10nF C9 1.0uF R19 2.0R VPP + C12 C13 10nF 10uF +3.3V C21 + 10nF R9 4. R10 4.7k ...

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... Freescale Semiconductor, Inc. Table 4. 33394DWB Evaluation Board Bill of Material Item Qty. Part Designator C3,C26,C29 C8,C11,C12,C15,C17,C19,C21,C23,C28,C30 9 4 C9,C14,C16,C18 10 2 C20,C10 11 1 C13 12 1 C22 13 1 C24 14 2 C25,C27 JP1 Q2, R3,R9,R10,R11,R12,R14 R13 33 1 R15 34 3 R16,R17,R18 35 3 R19,R20,R21 36 1 SW1 37 1 TP1 For More Information On This Product, ...

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... Freescale Semiconductor, Inc JP1 +BATTERY 6 VDDH m MURS320T3 1 100 C3 1.0 F/ C29 SW1 DIP–2 VPP_EN R14 VIGN 2.6V VKAM 4. 4.7 k C23 C24 100 F C28 5.0V @ 100mA VREF1 + 1.0 F 5.0V @ 150mA VPP + C12 C13 VPRE Q2 MJD31C R19 10R +3.3V + C21 C22 *Notes protection diode against reverse battery fault condition. In those applications, which do not require this type of protection, diode D2 can be ommitted. ...

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... Freescale Semiconductor, Inc. Table 5. 33394FC Evaluation Board Bill of Material Item Qty. Part Designator C3,C26,C29 C8,C11,C12,C15,C17,C19,C21,C23,C28 9 1 C18 10 3 C9,C14,C16 11 2 C10,C22 12 1 C13 13 1 C20 14 1 C24 15 2 C27,C25 16 1 C30 JP1 Q2,Q3, R3,R9,R10,R11,R12,R14 R13 36 1 R15 37 3 R16,R17,R18 38 1 R19 ...

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... Freescale Semiconductor, Inc. Input voltage +7V to +26.5V C1 100 OFF R5 C5 4.7k 10nF VKAM = 2.6V @ 60mA + C6 C7 10nF 22k R1 20k VREF1 = 5V @ 100mA + C8 C9 VDDH 10nF 1.0 F VPP = 5V @ 150mA + 3.3V @ 120mA C17 C16 47 F 10nF + C10 C11 10nF 47 F VPRE Q1 MJD44H11 VDDL = 2.6V @ 600mA ...

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... Freescale Semiconductor, Inc. Input voltage +10V to +26. 100 F ON OFF R5 C5 4.7k 10nF VKAM = 2.6V @ 60mA + C6 C7 10nF 22k R1 20k VREF1 = 5V @ 100mA + C8 C9 VDDH 10nF 1.0 F VPP = 5V @ 150mA + 3.3V @ 120mA C17 C16 10nF C10 C11 10nF 47 F VPRE Q1 MJD31C VDDL = 2.6V @ 400mA ...

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... Freescale Semiconductor, Inc. PIN ONE 22X E bbb GAUGE PLANE bbb C q (1.600) DETAIL Y For More Information On This Product, MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 33394 PACKAGE DIMENSIONS DH SUFFIX 44–LEAD HSOP PLASTIC PACKAGE CASE 1291–01 ISSUE EXPOSED HEATSINK AREA E4 A BOTTOM VIEW ...

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... Freescale Semiconductor, Inc. PIN 1 INDEX AREA 6.85 6. 6.85 6.55 0 0.75 44X 0.50 VIEW M–M 0.065 44X 0.015 (0.25) DETAIL N PREFERRED CORNER CONFIGURATION 4 DETAIL T DETAIL M PREFERRED BACKSIDE PIN 1 INDEX For More Information On This Product, 40 33394 PACKAGE DIMENSIONS FC SUFFIX 44–LEAD QFN PLASTIC PACKAGE CASE 1310– ...

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... Freescale Semiconductor, Inc. 10.3 5 7 PIN 1 INDEX 5. TIPS 0 6.6 5.9 0. VIEW C–C For More Information On This Product, MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 33394 PACKAGE DIMENSIONS DWB SUFFIX 54–LEAD SOICW–EP PLASTIC PACKAGE CASE 1377–01 ISSUE 2.65 2.35 52X ...

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... Freescale Semiconductor, Inc. For More Information On This Product, 42 33394 NOTES Go to: www.freescale.com MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA ...

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... Freescale Semiconductor, Inc. For More Information On This Product, MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA 33394 NOTES Go to: www.freescale.com 43 ...

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... Freescale Semiconductor, Inc. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...