ECO-MODE™ 搭載、1.5A、42V、降圧型 SWIFT™　DC/DC コンバータ

Transcription

1 TPS54140 Ω µ µ µ µ VIN PWRGD TPS54140 EN BOOT PH SS /TR RT /CLK COMP VSENSE GND Efficiency - % V= I 12 V, V O = 3.3 V, f sw = 1200 khz Load Current - A

2 MSOP TPS54140DGQ VIN EN BOOT VSENSE Input voltage COMP PWRGD SS/TR RT/CLK PH BOOT Output voltage PH PH, 10-ns Transient Voltage Difference PAD to GND EN BOOT Source current VSENSE PH RT/CLK VIN COMP Sink current PWRGD SS/TR Electrostatic Discharge (HBM) QSS (JESD22-A114A) Electrostatic Discharge (CDM) QSS (JESD22-C101B.01) Operating junction temperature Storage temperature ± Current Limit 100 Current Limit V V mv µa ma µa A µa A µa ma µa kv V 2

3 MSOP 57/W Operating input voltage Internal undervoltage lockout threshold No voltage hysteresis, rising and falling 2.5 Shutdown supply current EN = 0V,25, 3.5V VIN 42V Operating : nonswitching supply current VSENSE = 0.83V, VIN = 12V, Enable threshold voltage No voltage hysteresis, rising and falling, Input current Enable threshold +50mV ±3.8 Enable threshold ±50mV ±0.9 Hysteresis current ±2.9 Voltage reference T J = On-resistance VIN = 3.5V, BOOT-PH = 3V 300 VIN = 12V, BOOT-PH = 6V Input current 50 Error amplifier transconductance (g M ) ±2µA < I COMP < 2µA, V COMP = 1V 97 Error amplifier transconductance (g M ) during slow start ±2µA < I COMP < 2µA, V COMP = 1V, V VSENSE = 0.4V 26 Error amplifier dc gain V VSENSE = 0.8V 10,000 Error amplifier bandwidth 2700 Error amplifier source/sink V (COMP) = 1V, 100mV overdrive ±7 COMP to switch current transconductance 6 Current limit threshold VIN = 12V, T J = Thermal shutdown 182 V V µa V µa µa V mω na µmhos µmhos V/V khz µa A/V A 3

4 Switching Frequency Range using RT mode f SW Switching frequency R T = 200k Ω Switching Frequency Range using CLK mode Minimum CLK pulse width 40 RT/CLK high threshold RT/CLK low threshold RT/CLK falling edge to PH rising edge delay Measured at 500kHz with RT resistor in series 60 PLL lock in time Measured at 500kHz 100 Charge current V SS/TR = 0.4V 2 SS/TR-to-VSENSE matching V SS/TR = 0.4V 45 SS/TR-to-reference crossover 98% nominal 1.0 SS/TR discharge current (overload) VSENSE = 0V, V(SS/TR) = 0.4V 112 SS/TR discharge voltage VSENSE = 0V 54 VSENSE falling 92% V VSENSE VSENSE threshold VSENSE rising 94% VSENSE rising 109% VSENSE falling 107% Hysteresis VSENSE falling 2% Output high leakage VSENSE = VREF, V(PWRGD) = 5.5V, On resistance I(PWRGD) = 3mA, VSENSE < 0.79V 50 Minimum VIN for defined output V(PWRGD) < 0.5V, II(PWRGD) = 100µA khz khz khz ns V V ns µs µa mv V µa mv na Ω V 4

5 BOOT 1 10 PH VIN EN SS/TR RT/CLK Thermal Pad (11) GND COMP VSENSE PWRGD BOOT 1 O COMP 8 O EN 3 I GND 9 PH 10 I POWERPAD 11 PWRGD 6 O RT/CLK 5 I SS/TR 4 I VIN 2 I VSENSE 7 I 5

6 6 ERROR AMPLIFIER Boot Charge Boot UVLO UVLO Current Sense Oscillator with PLL Frequency Shift Logic And PWM Latch Slope Compensation PWM Comparator Minimum Clamp Pulse Skip Maximum Clamp Voltage Reference Overload Recovery VSENSE SS/TR COMP RT/CLK PH BOOT VIN Thermal Shutdown EN Enable Comparator Shutdown Logic Shutdown Enable Threshold TPS54140 Block Diagram Logic Shutdown PWRGD Shutdown OV GND POWERPAD UO

7 Ω V= 12 V I BOOT-PH = 3 V BOOT-PH = 6 V V= 12 V I V= 12 V I 610 V= I 12 V, RT = 200 kω V= I 12 V, T J = V= I 12 V, T J = Ω Ω 7

8 V= 12 V I V= 12 V I µ 20 µ V= 12 V I V= I 12 V, V I(EN) = Threshold +50 mv µ V= I 12 V, V I(EN) = Threshold 50 mv V= 12 V I µ 0.9 µ

9 V= 12 V I V= I 12 V, T J = 25 µ V= 12 V I T = 25 J µ µ V= I 12 V, V I(VSENSE) = 0.83 V µ µ T J = 25, V I(VSENSE) = 0.83 V

10 Ω V= 12 V I V= 12 V I VSENSE Rising VSENSE Rising VSENSE Falling VSENSE Falling V= 12 V, I T = 25 J V (SS/TR) = 0.2 V V= I 12 V

11 11 µ µ Ω

12 µ VOUT (ac) I L PH 12

13 µ Start V O = 3.3 V µ µ Stop Start Stop V O = 5 V

14 ± Ω TPS54140 R1 R2 VIN EN I1 0.9 µ A 1.25 V + - Ihys 2.9 µ A µ R3 VOUT µ R1 VIN I1 0.9 µ A TPS54140 Ihys 2.9 µ A + R2 EN 1.25 V - 14

15 µ µµ µ µ EN SS/TR V SENSE VOUT 15

16 TPS54140 EN SS/TR PWRGD TPS54140 EN TPS SS/TR EN PWRGD EN 6 PWRGD SS/TR SS /TR PWRGD EN1, EN2 VOUT1 EN1 PWRGD1 VOUT2 VOUT1 VOUT2 16

17 TPS54140 EN VOUT 1 SS/TR PWRGD EN TPS54140 VOUT 2 R1 SS/ TR R2 PWRGD R4 R3 17

18 EN EN VOUT1 VOUT1 VOUT2 VOUT2 EN VOUT1 VOUT2 18

19 Ω V= I 12 V, T J = 25 ƒ V= I 12 V, T J = Ω 19

20 Ω Ω ƒ 2500 V O = 3.3 V Skip Shift

21 21 Ω Ω RT/CLK TPS54140 Clock Source PLL R fset 10 pf 4 kω 50 Ω EXT EXT IL PH

22 Ω µ Power Stage gmps 6 A/V PH a V O b R1 R ESR COMP R L C2 c R3 C1 CO RO gm ea 97 µ A/V 0.8 V VSENSE R2 C OUT 22

23 V O VC Adc R ESR fp R L gm ps C OUT π π π π fz 23

24 V O R1 VSENSE gm ea COMP Type 2A Type 2B Type 1 R2 Vref R O C O R3 C2 R3 C2 C1 C1 Aol A0 P1 A1 Z1 P2 BW π π π π π π π π π 24

25 Ω Ω C1 0.1 µ F L1 10 µ H 3.3 V at 1.5 A 8-18 V U1 TPS54140DGQ BOOT VIN PH GND D1 B220A + C OUT 47 µ F/6.3 V C2 C3 C4 R3 2.2 µ F 2.2 µ F 0.1 µ F 332 kω R kω CSS RT EN SS/TR RT/CLK 0.01 µ F 90.9 kω PwPd COMP VSNS PWRGD CF 6.8 pf RC 76.8 kω CC 2700 pf R kω R2 10 kω 25

26 µ µ ƒ µ 26

27 µ µ Ω µ Ωµ ƒ ƒ ƒ ƒ ƒ ƒ ƒ 27

28 µ µ µ ƒ µ

29 29 µ µ µ ΩΩ Ω Ω Ω µ Ω ƒ π ƒ π

30 Ω ƒ πƒ ƒ ƒƒ ƒ π π πƒ ƒ πƒ Ω Ω 30

31 VIN VO VOUT IO EN IL VOUT VOUT IL VIN PH IL VOUT VOUT IL IL PH PH 31

32 VIN VIN IL IL PH PH VIN V= 8 V I V O = 3.3 V, f sw = 1200 khz IL PH V= 12 V I V= 16 V I V= I 12 V 40 Phase Gain

33 I O = 0.5A ƒ ƒ Ω 33

34 Vout Topside Ground Area Output Capacitor Route Boot Capacitor Trace on another layer to provide wide path for topside ground Catch Diode Output Inductor Vin Input Bypass Capacitor BOOT PH VIN GND EN COMP UVLO Adjust Resistors SS/TR RT/CLK VSENSE PWRGD Compensation Network Resistor Divider Slow Start Capacitor Frequency Set Resistor Thermal VIA Signal VIA 34

35 Orderable Device Status (1) Package Type TPS54140DGQ ACTIVE MSOP- Power PAD TPS54140DGQR ACTIVE MSOP- Power PAD Package Drawing Pins Package Qty DGQ Green (RoHS & no Sb/Br) DGQ Green (RoHS & no Sb/Br) Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3) CU NIPDAU CU NIPDAU Level-1-260C-UNLIM Level-1-260C-UNLIM 35

36 REEL DIMENSIONS TAPE DIMENSIONS K0 P1 B0 W Reel Diameter Cavity A0 A0 B0 K0 W P1 Dimension designed to accommodate the component width Dimension designed to accommodate the component length Dimension designed to accommodate the component thickness Overall width of the carrier tape Pitch between successive cavity centers Reel Width (W1) QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE Sprocket Holes Q1 Q2 Q1 Q2 Q3 Q4 Q3 Q4 User Direction of Feed Pocket Quadrants *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) A0(mm) B0 (mm) K0 (mm) P1 (mm) W (mm) Pin1 Quadrant TPS54140DGQR MSOP- Power PAD DGQ Q1 36

37 *All dimensions are nominal Device PackageType Package Drawing Pins SPQ Length(mm) Width (mm) Height (mm) TPS54140DGQR MSOP-PowerPAD DGQ

38 38

39 39

40 DGQ (R-PDSO-G10) PowerPAD (SLVS889) 40

41 IMPORTANT NOTICE