MP400FC CIRRUS | Alldatasheet
Document overview
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Technical content
Features
♦ Low Cost ♦ Wide Common Mode Range ♦ Standard Supply Voltage ♦ Single Supply: 10V to 50V ♦ Output Current - 150mA Continuous ♦ Output Voltage 50-350V ♦ 350 V/µS Slew Rate ♦ 200 kHz Power Bandwidth
applications
♦ Piezoelectric positioning and Actuation ♦ Electrostatic Deflection ♦ Deformable Mirror Actuators ♦ Chemical and Biological Stimulators Power Operational Amplifiers MP400FCP r o d uc t I n no va t i o nF r om ".1 4.14 $0/530--&3 3TFU 1PXFS(/% 7CJBT 7JO 7UP7 "OBMPH (/% */*/ 7CPPTU -'JO 0VU *MJN equivalent circuit DiaGram Copyright © Cirrus Logic, Inc. 2008 (All Rights Reserved)http://www.cirrus.com maY 2008 APEX − MP400FCUREVA
P r o d u c t I n n o v a t i o n F r o m parameter symbol min max units SUPPLY VOLTAGE, +Vcc to GND 50 V OUTPUT CURRENT, peak within SOA 200 mA POWER DISSIPATION, internal, DC, Amplifier 14.2 W OUTPUT POWER, SMPS 67 W INPUT VOLTAGE, Differential -16 16 V INPUT VOLTAGE, Common Mode -16 16 V TEMPERATURE, pin solder, 10s 225 °C TEMPERATURE, junction (Note 2) 150 °C TEMPERATURE RANGE, storage −40 105 °C OPERATING TEMPERATURE, case −40 85 °C 1. characteristics anD speciFications NOTES: 1. (All Min/Max characteristics and specifications are guaranteed over the Specified Operating Condi- tions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and TC = 25°C). absolute maximum ratinGs 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. parameter test conditions min typ max units ampliFier input OFFSET VOLTAGE 8 40 mV OFFSET VOLTAGE vs. temperature 0 to 85°C (Case) -63 µV/°C OFFSET VOLTAGE vs. supply 32 µV/V BIAS CURRENT, initial (Note 3) 8.5 200 pA OFFSET CURRENT, initial 12 400 pA INPUT RESISTANCE, DC 106 Ω COMMON MODE VOLTAGE RANGE, pos. +Vs - 2 V COMMON MODE VOLTAGE RANGE, neg. -Vs + 5.5 V COMMON MODE REJECTION, DC 90 118 dB NOISE 700KHz bandwidth 418mV µV RMS ampliFier Gain OPEN LOOP @ 15Hz 89 120 dB GAIN BANDWIDTH PRODUCT @ 1MHz 1 MHz PHASE MARGIN Full temperature range 50 ° ampliFier output VOLTAGE SWING IO = 10mA |VS| - 2 V VOLTAGE SWING IO = 100mA |VS| - 8.6 |VS| - 12 V VOLTAGE SWING IO = 150mA |VS| - 10 V CURRENT, continuous, DC 150 mA SLEW RATE 100 350 V/µS speciFications
P r o d u c t I n n o v a t i o n F r o m '3&26&/$: ,)[ 4611-:$633&/5 ("*/ 3&4*4503 ų $633&/5-*.*5 *-*. N" $633&/5-*.*5 4-&83"5& 7TFD 433*4& 43'"-- ("*/ '3&26&/$: ,)[ 06516570-5"(& 108&33&410/4& ("*/ /0$0.1&/4"5*0/ "11-*&%503* , ( 4-&83"5& 7TFD 4-&83"5& '"-- /0$0.1&/4"5*0/ 4&55-*/(5*.&500'7 */16570-5"(& QQ 70-54 065165 -*.*5&%507 #:4611-: /0$0.1&/4"5*0/ parameter test conditions min typ max units SETTLING TIME, to 0.1% 2V Step 1 µS RESISTANCE, No load RLIM = 6.2Ω 44 Ω POWER BANDWIDTH, 300VP-P +VS = 160V, −VS = -160V 200 kHz CURRENT, quiescent, amplifier only 0.2 0.7 2.5 mA smps INPUT VOLTAGE, VIN 10 50 V SMPS OUTPUT VOLTAGE, VB 46.75 365 V SMPS OUTPUT CURRENT, IS VB = 10xVIN 150 mA OUTPUT VOLTAGE TOLERANCE VB ≤ 10xVIN, IS ≤ 150mA, RSET = 1% +/-2 6.5 % VOLTAGE BOOST 10 x input V thermal RESISTANCE, DC, junction to case Full temperature range, f<60Hz 7.7 8.8 °C/W RESISTANCE, junction to air Full temperature range 46 °C/W TEMPERATURE RANGE, case 0 70 °C 3. Doubles for every 10oC of temperature increase. 4. +VS and –VS denote the positive and negative supply voltages to the output stage.
4 MP400FCU
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P r o d u c t I n n o v a t i o n F r o m pin # pin name Description 21 - 23, 25 VIN Input voltage pins for the on board high voltage switch mode power supply. 24 VBIAS Input voltage pin for the boost controller circuitry. This pin is typically tied to VIN 12 – 15 Q2D Drain node of the SMPS MOSFET switch. An external RC snubber may be connect from this node to power ground to reduce or eliminate overshoot and ringing at switch turn off, reducing switching noise on the SMPS. 8 VB This is the output of the high voltage SMPS and typically is tied to pin 6, LFIN. Other loads can be added to this pin as long as the maximum output power of the SMPS is not exceeded. For proper operation, an external high voltage, low ESR capacitor must be connected to this pin. Refer to the paragraph titled “SMPS Output Capacitor”.
6 LFIN The high voltage SMPS, VB , is connected to this pin to power the MP400FC amplifier through a
47uH filter inductor. The supply current in to this pin can not exceed 200mA. 4 +VS MP400FC amplifier high voltage supply pin. This pin is used for external supply bypass. A high quality ceramic capacitor of at least 1uF should be used. The high voltage SMPS, VB, can be connected directly to this pin, bypassing the 47uH filter inductor. 34 RSET SMPS voltage set resistor. A resistor is connected from this pin to power ground to set the SMPS voltage. 26 – 33 PGND Power ground. SMPS switching circuits are referenced to ground through these pins. 35 AGND Analog ground for MP400FC amplifier circuits. AGND and PGND are connected at one point on the MP400FC. Avoid external connects between AGND and PGND. 41 -Vs This pin is typically connected to AGND. However, an external negative supply voltage can be connected to this pin. 39 +IN Amplifier non-inverting input 40 -IN Amplifier inverting input
1 VOUT Amplifier output
2 ILIM Amplifier current limit. A current limit resistor must be connected between ILIM and VOUT. RLIM = 0.7/ILIM. 36 CR+ + side compensation capacitor connection one. 37 CC+ + side compensation capacitor connection two. 38 CR- - side compensation capacitor connection one. 42 CC- - side compensation capacitor connection two. pin Descriptions $$ $$ 1PXFS(/% $*/ 77 3-*. 50-0"%"/% 7#*"4 7*/ "(/% 34&5 1(/% 1(/% 1(/% 1(/% 1(/% 1(/% 1(/% 1(/% 7*/ 7*/ 7*/ *-*. 065 $CPPTU -'*/ "OBMPH(/% external connections 42-Pin DIP package style Fc
P r o d u c t I n n o v a t i o n F r o m tYpical application The MP400FC is ideally suited to driv - ing both piezo actuation and deflection applications off of a single low voltage supply. The circuit above boosts a sys - tem 24V buss to 350V to drive an ink jet print head. The MP400FCs high speed deflection amplifier is biased for single supply operation by external resistors R2 – R6, so that a 0 to 5V DAC can be used as the input to the amplifier to drive the print head from 0 to >300V. General Please read Application Note 1 “General Operating Considerations” which covers stability, power supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexmicrotech.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit, heat sink selection, Apex’s complete Application Notes library, Technical Seminar Workbook and Evaluation Kits. current limit For proper operation, the current limit resistor, Rlim, must be connected as shown in the external connections diagram. The minimum value is 3.5Ω, however for maximum reliability and protection, the resistor should be set as high as possible. The value of the resistor is calcu - lated as follows, with Ilim in A; the maximum practical value is 30Ω. Rlim = 0.7 / Ilim saFe operatinG area The MOSFET output stage of the MP400FC amplifier is not limited by second breakdown considerations as in bipolar output stages. Only thermal considerations and current handling capabilities limit the SOA. The output stage is protected against transient flyback by the parasitic body diodes of the output stage MOSFET structure. However, for pro- tection against sustained high energy flyback external fast-recovery diodes must be used.. supplY current The MP400FC features a class A/B driver stage to drive the output MOSFETs and an innovative input stage to achieve very high slew rates. The supply current drawn by the MP400FC, even with no load, varies with the slew rate of the output signal as shown in the graph below. stabilitY The MP400FC is externally compensated and performance can be tailored to the application. Use the graphs of small signal response and power response as a guide. The compensation capacitor CC must be rated at 500V working voltage. NPO capacitors are recommended. The compensation capacitors must be mounted closely to the amplifier pins 36 & 37 and 38 & 42 to avoid spurious oscillation. '3&26&/$: ,)[ 4611-:$633&/5 ("*/ 3$- %&'-&$5*0/ 1-"5& */, %301-&54 4.14 $*3$6*5 7JO %"$ ų ' 3TFU 1(/% 7CPPTU 40" 065165$633&/5 N" 7470 7
P r o d u c t I n n o v a t i o n F r o m smps operation The MP400FC is designed to operate off of a standard voltage rail. Typical values include 12V, 24V, or 48V. The addition of the on-board SMPS elimi - nates the need to design or purchase a high voltage power supply. The only inputs required by the SMPS are the VIN source. Input and output filter capaci- tor, and boost voltage set resistor (RSET). The SMPS output can be adjusted between a minimum of 50V to a maximum of 350V. The voltage boost adjustment is independent of V IN. Adjustment to the boost level is made through a resistor from the RSET pin to ground. The resistor value is: Rset = (3.16E6 • (351-Vboost)) / (Vboost-1.25) / (4.42E3-(715 • (351-Vboost)) / (Vboost-1.25)) Where Vboost = desired SMPS voltage. Example: 1) Desired Vboost = 160V 2) Rset = 1K (1074 by equation) If RSET is open, Vboost will be 50V. If RSET is shorted to ground Vboost will be limited to 350V. smps output capacitor An external SMPS output filter capacitor is required for proper operation. ESR considerations prevail in the choice of the output filter capacitor. Select the highest value capacitor that meets the following ESR requirement. The minimum value for CBOOST is 100uF. ESR = dVo/ILPK Where, dVo = the maximum acceptable output ripple voltage ILPK = Peak inductor current = (1/L)•Vin•ton L = 10E-6 if the internal inductor is used. Vin = Input voltage of the application. ton = sqrt(2•Io•L•((Vo+0.6-Vin)/(Fsw•Vin2))) Vboost = The boost supply voltage of the application. Io = The maximum continuous output current for the application. Fsw = 100KHz switching frequency of the MP400FC boost supply. smps input capacitor An external input capacitor is required. This capacitor should be at least 100uF. 4.140VUQVUWT34&5 7#PPTU 7 34&5 ų
P r o d u c t I n n o v a t i o n F r o m thermal consiDerations For reliable operation the MP400FC will require a heatsink for most applications. When chosing the heatsink the power dissipation in the op amp and the SMPS MOSFET switch (Q2) are both considered. The power dissipation of the op amp is determined in the same manner as any power op amp. The power dissipation of the MOSFET switch (Q2) is the sum of the power dissipation due to conduction and the switching power. PD(Q2) = (IIN(pk) 2 • RDS(ON) • D) + (IIN(pk) • VIN • tr • FSW) Where: VIN = SMPS input voltage VB = SMPS output voltage IO = total SMPS output current FSW = 100KHz RDS(ON) = 0.621Ω tr = 82 x 10-9s D = T1 • FSW t1 = 2 • IO • 10 x 10-6 • ( ) VB - VIN FSW • VIN IIN(pk) = VB • td 10 x 10-6 td = t1 • ( ) - t1 VB VB - VIN contactinG cirrus loGic support For all Apex Precision Power product questions and inquiries call toll free 800-546-2739 in North America. For In - ternational customer support, contact a local Cirrus Logic Sales Representative. To find the one nearest to you, go to http://www.cirrus.com IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledg - ment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY , OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY , AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK AND CIR- RUS DISCLAIMS AND MAKES NO WARRANTY , EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIR- RUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY , INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex and Apex Precision Power are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.