MC34717EP Freescale Semiconductor, MC34717EP Datasheet

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... OUT1 Figure 1. 34717 Simplified Application Diagram * This document contains certain information on a new product. Specifications and information herein are subject to change without notice. © Freescale Semiconductor, Inc., 2007-8. All rights reserved. DUAL SWITCH-MODE POWER SUPPLY Device MC34717EP/R2 V 34717 IN VIN PVIN2 PVIN1 ...

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... Generator Reference V BG Selection V BG Discharge CHANNEL 2 Thermal Monitoring Bandgap Regulator VDDI Internal Voltage Regulator VIN ILIM2 BOOT2 PVIN2 M6 Gate SW2 I SENSE Driver M7 PWM PGND2 – COMP2 Error Amplifier – INV2 M9 VOUT2 Discharge VREFIN Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... VOUT1 Output 6 INV1 Input 7 Input COMP1 8 VREFIN Input None 10 PG Output 11 Input SD 12 Input COMP2 13 INV2 Input Analog Integrated Circuit Device Data Freescale Semiconductor PIN CONNECTIONS Transparent Top View 3 PIN Figure 3. 34717 Pin Connections Formal Name Channel 1 Bootstrap capacitor input pin ...

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... Analog ground of the IC Signal Ground Internal Supply Internal Supply Voltage Output Voltage Thermal pad for heat transfer. Connect the thermal pad to the analog Thermal Pad ground and the ground plane for heat sinking. page 12. Definition Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... Temperature and Moisture Sensitivity Levels (MSL www.freescale.com, search by part number [e.g. remove prefixes/suffixes and enter the core ID to view all orderable parts. (i.e. MC33xxxD enter 33xxx), and review parametrics. 6. Maximum power dissipation at indicated ambient temperature. Analog Integrated Circuit Device Data Freescale Semiconductor ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Symbol V ...

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... Thermal resistance between the device and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on the top surface of the board near the package. 34717 6 Symbol Value (8) R θJA (9) R qJMA R 13.6 qJB Analog Integrated Circuit Device Data Unit 93 °C/W 32 °C/W °C/W Freescale Semiconductor ...

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... Design information only, this parameter is not production tested. 13. This is directly affected by the accuracy of the external feedback network, 1% feedback resistors are recommended. Analog Integrated Circuit Device Data Freescale Semiconductor ≤ 6 40°C ≤ T ≤ 85°C, GND = 0 V, unless otherwise noted. Typical 25° ...

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... MHz - 7.0 - V/µs -3.0 0 3.0 mV -1.0 - 1.0 µA - 170 - ° °C 2.5 - 6.0 V 0.7 - 3.6 V -1.0 - 1.0 % -1.0 - 1.0 % -1 -8.0 - -1.5 % 1 DDI - 8 mΩ mΩ Ω 2.0 - 4 µA Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... PG Pin Leakage Current (M1 is off, Pulled up to VIN) Notes 17. Design information only, this parameter is not production tested. Analog Integrated Circuit Device Data Freescale Semiconductor ≤ 6 40°C ≤ T ≤ 85°C, GND = 0 V, unless otherwise noted. Typical 25°C under nominal conditions, unless otherwise noted. ...

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... OFFMIN t - ONMIN t SS2 ILIM2: 1. 1 1. 2. LIM2 t 80 TIMEOUT2 t 5.0 FILTER2 Typ Max Unit 8 5 150 - ns (19 3 0 120 µ 12 150 - ns (19 3.2 - 1.6 - 0 120 µs Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... Thermal Shutdown Retry Timeout Period Notes 21. Design information only, this parameter is not production tested. Analog Integrated Circuit Device Data Freescale Semiconductor DYNAMIC ELECTRICAL CHARACTERISTICS ≤ 6 40°C ≤ T ≤ 85°C, GND = 0 V, unless otherwise noted. Typical 25°C under nominal conditions, unless otherwise noted. ...

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... This output activates after delay and must be pulled external resistor to a supply voltage like V voltage (channel 2) directly Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... MΩ. REFERENCE VOLTAGE INPUT (VREFIN) The output of channel two will track the voltage applied at this pin. Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DESCRIPTION FUNCTIONAL PIN DESCRIPTION FREQUENCY ADJUSTMENT INPUT (FREQ) The buck converters switching frequency can be adjusted by connecting this pin to an external resistor divider between VDDI and GND pins ...

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... SD pin. • Power good output signal: The 34717 can communicate to an outside host that a fault has occurred by pulling the voltage on the PG pin high. Figure 1). Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... DC conversion from an un-regulated input voltage to a regulated output voltage used by the loads for reliable operation. The buck converter is a high performance, fixed Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION frequency (externally adjustable), synchronous buck PWM voltage-mode control ...

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... T OUT2 IMEOUT Expired Channel 1 Over-current V =OFF OUT1 V =ON OUT2 >=I OUT1 LIM1 TIMEOUT=1 For>=10 ms internal supply voltage and DDI DDI is equal to REFIN = 0 V. Therefore, the voltage OUT during the capacitor charge IN Analog Integrated Circuit Device Data Freescale Semiconductor POR ...

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... It is comprised of a sense MOSFET and a comparator. The sense MOSFET acts as a current Analog Integrated Circuit Device Data Freescale Semiconductor detecting device by sampling a ratio of the load current. That sample is compared via the comparator with an internal reference to determine if the output is in over-current or not. ...

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... PGND2 15 14 C11 0.1 μF VOUT2 VO2 INV2 C21 20 pF C230 R4 1 R18 300 C22 R2 1.8 nF 17.4 k Buck Converter 2 Vo2_2 L1 1.5 μH Vo2_1 VO2 R30 4.7_nopop C7 C6 100 μF 100 μ 100 μF 1 nF_nopop Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... VMASTER 3 STBY_nopop 5 LED CON10A SD PVIN1 Capacitors PVIN1 0.1 μF 1.0 μF 100 μF 100 μF Analog Integrated Circuit Device Data Freescale Semiconductor Figure 6. 34717 Typical Application PGOOD LED VIN Capacitors VIN C17 C16 10 μF 0.1 μF J1 VDDI 2 VREFIN 4 R16 R22 10 k_nopop ...

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... VOLTAGE APPLIED TO ILIM 3.2 1.19 - 1.49 V 1.6 1.50 - 1.81 V 0.8 1.82 - 2.13 V 0.4 2.14 - 2.50 V VDDI R FQH FREQ FQL ILIM1 GND Adjustment Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... Vin _ min Vout Δ = Iout _ step Fsw Inductor Current Rise Time: Analog Integrated Circuit Device Data Freescale Semiconductor + ( The following formula is helpful to find the maximum allowed ESR. ESR The effects of the ESR is often neglected by the design- ers and may present a hidden danger to the ultimate supply stability ...

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... • ------------------- - 2π π − Vmaster Different Slope Vslave Figure 10. Ratiometric Tracking Vmaster Slave Regulation Point Same Slope Vslave Figure 11. Co-incidental Tracking and R as shown in Figure 12. The slave 3 4 and R . All four 1 2 Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... S INV- terminal, resistors R and R below (Condition Analog Integrated Circuit Device Data Freescale Semiconductor and would be (R accuracy of the system and must be 1% accurate resistors. To achieve this tracking configuration, the master voltage must be connected in the way shown and cannot be directly connected to the VREFIN terminal ...

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... PVIN1 and 2 VIN2 and 3 Loop Curr ent SW1 and 2 SW2 and 3 Loop LS Current LS ON GND2 and 3 Buck Converter 1 and 2 BUCK CONVERTER 2 and 3 Figure 16. Current Loop Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... Analog Integrated Circuit Device Data Freescale Semiconductor PACKAGING PACKAGING DIMENSIONS EP SUFFIX (PB_FREE) 26-PIN QFN 98ASA10728D ISSUE 0 PACKAGING PACKAGING DIMENSIONS 34717 25 ...

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... PACKAGING PACKAGING DIMENSIONS 34717 26 EP SUFFIX (PB-FREE) 26-PIN QFN 98ASA10728D ISSUE 0 Analog Integrated Circuit Device Data Freescale Semiconductor ...

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... Output Under-voltage/Over-voltage Filter Delay Timer • Changed • Changed • Changed definition for • Changed drawings in • Changed table for • Removed PC34717EP/R2 from the ordering information and added MC34717EP/R2 • Changed data sheet status to Advance Information • Made changes to 12/2007 4.0 SW2 Pins ...

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... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...