L6270

L6270 STMICROELECTRONICS | Alldatasheet

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SO24 AND SO20 PLASTIC SMD PACKAGE 4.5 TO 13.2V OPERATIVE VOLTAGE ±25 TO ±40V OUTPUT VOLTAGE RANGE SELECTABLE BY EXTERNAL RESISTOR FULL-WAVE RESONANT DC-DC CON- VERTER USING SINGLE COIL FOR DUAL HIGH VOLTAGE GENERATOR WITH OUT- PUT SLEW RATE CONTROL AND SELF CURRENT LIMITING LINEAR MODE AND BANG-BANG MODE ±40V OR 0/+80V OPERATIVE VOLTAGE DRIVING CONFIGURATION MODES: 1. SINGLE ENDED VOLTAGE MODE 2. DIFFERENTIAL VOLTAGE MODE 3. SINGLE ENDED CHARGE MODE DOUBLE OPERATIONAL AMPLIFIERS WITH 500KHZ GAIN BANDWIDTH PRODUCT AND LOAD DRIVING CAPABILITY FROM 0.4NF UP TO 24NF 2.5V VOLTAGEREFERENCE 2.5V ANALOG SHIFTING CIRCUITRY POWER SAVING SLEEP MODE

DESCRIPTION

The L6270/1is a piezoelectricactuator driver. This is preliminary information on a new product now in development. Details are subject to change without notice. February 1999 COIL RESONANT DC-DC STEP-UP CONTROLLER HVP HVM HVP HVM K K K K 2.5V 50K Ω SLEEP ANALOG LEVEL SHIFTER VOUT=VIN-2.5 VOUT VIN BAND-GAP REFERENCE + - INTERNAL CURRENT BIAS 100µA VSUPPLY 200µA VSUPPLY 4.5V-13V CRES BANG-LINV512-AP COIL HVP POWER SUPPLY INB- 32120 24 INB+ RC COMP 22 INA- INA+ SLEEP 1110 V-SHIFTED VIN0-5 1312 GND-A VREF 100nF 25K Ω IREF DC2REF RREFDC V512A OUT1-A OUTK-A HVM OUT1-B OUTK-B GND-P2 HBRIDGE1 D98IN959A +40V -40V 100nF47nF 100nF Vfdb BLOCK DIAGRAM SO20 SO24 ORDERING NUMBERS: L6270 L6271 L6270 L6271 MILLI-ACTUATOR DRIVER PRODUCT PREVIEW

INA(inv) SLEEP INA(not inv) GND-A DC2ref INB(not inv) INB(inv) OUT1-B OUTK-B V512-AP RC comp HVM HVP1 Vref Iref D98IN968 PIN CONNECTION (SO20) PIN FUNCTIONS (SO20) N. Name Description 1 H-BRIDGE 40V Half Bridge output for negative charge pump. 2 GND-P Power ground. 3 COIL Coil for positive step up. 4 OUT1-A Output ampl.A. 5 OUTK-A Hi current output ampl.A. 6 SLEEP Sleep mode for stand-by condition (1=SLEEP 0=operative). 7 INA (inv) Inverting input of A-amplifier. 8 INA (not inv) Non Inverting input of A-amplifier. 9 GND-A Analog ground. 10 V ref Precise 2.5V reference voltage. 11 I ref External resistor for precise internal current reference. 12 DC2ref Reference voltage for DC-DC converter X20. 13 INB (not inv) Non Inverting input of B-amplifier. 14 INB (inv) Inverting input of B-amplifier. 15 OUTK-B Hi current output ampl.B. 16 OUT1-B Output ampl.B. 17 V512-AP Analog&Power voltage supply 5 to 12V. 18 RC comp DC-DC converter compensation network. 19 HVM Negative High voltage generated op amp supplier. 20 HVP Positive High voltage generated op amp supplier. L6270 - L6271

N.C. OUT1-A SLEEP OUTK-A INA(inv) INA(not inv) INB(not inv) INB(inv) OUTK-B V512-AP OUT1-B LIN/BANG RC comp HVM HVP1 V-SHIFTED DC2ref D98IN969 Vin 0-5 Iref11 14 1312GND-A Vref PIN CONNECTION (SO24) PIN FUNCTIONS (SO24) N. Name Description 1 H-BRIDGE 40V Half Bridge output for negative charge pump. 2 GND-P Power ground. 3 COIL Coil for positive step up. 4 N.C. 5 OUT1-A Output ampl.A. 6 OUTK-A Hi current output ampl.A. 7 SLEEP Sleep mode for stand-by condition (1=SLEEP 0=operative). 8 INA (inv) Inverting input of A-amplifier. 9 INA (not inv) Non Inverting input of A-amplifier. 10 V-SHIFTED Analog level shifter output Vin-Vref (-2.5 to +2.5 dynamic range)

11 Vin 0-5 Input positive voltage

12 GND-A Analog ground. 13 V ref Precise 2.5V reference voltage. 14 I ref External resistor for precise internal current reference. 15 DC2ref Reference voltage for DC-DC converter X20. 16 INB (not inv) Non Inverting input of B-amplifier. 17 INB (inv) Inverting input of B-amplifier. 18 OUTK-B Hi current output ampl.B. 19 OUT1-B Output ampl.B. 20 V512-AP Analog&Power voltage supply 5 to 12V.

21 LIN/BANG Linear or Bang-bang select pin (V512 = BANG 0 = Linear)

22 RC comp DC-DC converter compensation network. 23 HVM Negative High voltage generated op amp supplier. 24 HVP Positive High voltage generated op amp supplier. L6270 - L6271

ELECTRICAL CHARACTERISTICS (All the following parameters are specified @ 27°C and V512 = 12V, unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit V512 Main power supply 4.5 13.2 V HVP (1) Output positive Voltage Double Supply Voltage 25 40 V Single Supply Voltage V512 ≥ 8 Single Supply Voltage V512 ≤ 8 V V HVM Output negative voltage -40 -25 V HVripple HVP, HVM ripple External filter cap. 100nF Bang-Bang Mode Linear Mode 2.5 0.8 V V DC-DC gain Ratio of HVP and DC-DC ref. voltage PIN15 19 20 21 I, hvp Output current (see figure 1a) I, hvm Top Time to operating condition 5 ms Fswitch (2) Switching Frequency 80 550 kHz R ds,on Boost transistor ON resistance 4 Ω Iboost Boost transistor current limiting 700 mA CP-slope Charge Pump Slope 150 V/ µs Isleep Total current in sleep mode 1 mA Vref Reference voltage at PIN13 2.4 2.5 2.6 V Ivref Reference voltage output current -1 1 mA Vref, cap Filter capacitor at PIN13 10 100 nF Iref, res Resistor at PIN14 for precise internal current (100µA) 25 k Ω Vsup Minimum OpAmp supply Voltage (HVP if externally given) Double Supply V512 V Single Supply V512 V DC gain OpAmp DC gain 130 dB GBW OpAmp Gain Bandwidth product Cload 0.4nF to 24nF Double Supply Voltage

500 KHz

DCinp OpAmp Input dynamic voltage Double supply -5 5 V Single supply 1.2 10 V DC-DC OFF DC-DC Converter switched-off when DC 2REF voltage lower than 0.6 V ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V512 Supply voltage pin 20 referred to Ground 14 V HVP Positive high voltage referred to HVM 84 V HVM Negative high voltage referred to Ground -42 V IN A&B Amplifier input voltage common mode ±6V Vin o to 5 Level shifts input voltage -0.5 to +5.5 V Tamb Operative Ambient Temperature -20 to +80 °C Tstg Storage Temperature -40 to +125 °C All the voltage value are referred to ground. L6270 - L6271

Symbol Parameter Test Condition Min. Typ. Max. Unit Vout OpAmp Output dynamic voltage Capacitive load HVM HVP V DC, Ibias OpAmp Bias supply current (both) 7m A Iout OpAmp Dynamic Output current -75 75 mA PSRR,P OpAmp Positive power supply rejection ratio @ 50kHz TBD dB PSRR,N OpAmp Negative power supply rejection ratio @ 50kHz TBD dB C load OpAmp Load capacitance range Voltage mode Gain min 20dB 0.4 24 nF C int OpAmp Integration capacitance Charge mode Gain min 20dB 0.4 24 nF K OpAmp Current ratio OUTK/OUT1 9.8 10 10.2 Ierr (3) OpAmp Ioutk Iout1 = 0 -10 50 µA Voffset OpAmp Input offset voltage ±10 mV DC Shift range Dynamic Shifter Input Range 14 V Note 1: Selectable by external resistor. Note 2: Set by external Coil and Capacitor. Note 3: It will be write after silicon characterization, it’s designed for a maximum offset of a few mA. In charge mode the Piezo isin openloop, andif Cpiezo = 0.4nF witha maximum Current error of±5µA the Maximum long time voltage drift is±12mV/µs ELECTRICAL CHARACTERISTICS (continued) 0 0.004 0.008 0.012 0.016 I L(A) V S (V) Supply=5V Supply=8V D99IN1003 Figure 1a.HVP load regulation in single supply mode”. L6270 - L6271

supply or V512+4 to 40V symmetrical to ground. mode it has 1.2V up to 10V input dynamic range. nally with a signal symmetrical to ground. and HVM must be connectedto GND. switching and furthermore controlled rectification. fer energy from the power supply to the output. Figure 1. Charge Mode Configuration (only a suggestion, the applicationis completely free according with ElectricalCharacteristics).

with the LC oscillations of the resonant boost. Figure 3. DC-DC converter

A eB D E L K H A1 C SO20MEC hx4 5° SO20 DIM. mm inch A 2.35 2.65 0.093 0.104 A1 0.1 0.3 0.004 0.012 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.009 0.013 D 12.6 13 0.496 0.512 E 7.4 7.6 0.291 0.299 e 1.27 0.050 H 10 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 L 0.4 1.27 0.016 0.050 K0 °(min.)8° (max.) OUTLINE AND MECHANICAL DATA L6270 - L6271

DIM. mm inch A 2.35 2.65 0.093 0.104 A1 0.10 0.30 0.004 0.012 A2 2.55 0.100 B 0.33 0.51 0.013 0.0200 C 0.23 0.32 0.009 0.013 D 15.20 15.60 0.598 0.614 E 7.40 7.60 0.291 0.299 e 1.27 0,050 H 10.0 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 k0 ° (min.), 8° (max.) L 0.40 1.27 0.016 0.050 Be A 1324 D L H A1 C E K hx4 5° SO24 Seating Plane 0.10mm .004 OUTLINE AND MECHANICAL DATA L6270 - L6271

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics  1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com L6270 - L6271