ZXBM1004
Document overview
- Manufacturer or author: Diodes Incorporated
- PDF pages: 11
Technical content
Features
Compliant with external PWM speed control Compliant with thermistor control Minimum speed setting Low noise Auto restart Built in hall amplifier Speed pulse (FG) and lock rotor (RD) outputs Up to 18V input voltage (60V with external regulator) QSOP-16 package For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/ Pin Assignments Associated Application Notes AN41 - Thermistor control AN42 - External PWM control AN43 - Interfacing to the motor windings
Applications
Mainframe and personal computer fans and blowers Instrumentation fans Central heating blowers Automotive climate control QSOP-16 NOT RECOMMENDED FOR NEW DESIGN CONTACT US QSOP-16
Document number: DS33428 Rev. 8 - 3 2 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 Functional Block Diagram Absolute Maximum Ratings Parameter Symbol Limits Unit Supply voltage VCC max -0.6 to 20 V Input current ICC max 200 mA Input voltage VIN max -0.5 to VCC +0.5 V Output voltage VOUT max -0.5 to VCC +0.5 V Power dissipation PD max 500 mW Operating temp. TOPR -40 to 110 °C Storage temp. TSTG -55 to 150 °C
Document number: DS33428 Rev. 8 - 3 3 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 Power Dissipation Maximum allowable Power Dissipation, PD, is shown plotted against Ambient Temperature, TA, in the accompanying Power Derating Curve, indicating the Safe Operating Area for the device. Power consumed by the device, PT, can be calculated from the equation: PT = PQ + PPhHi + PPhLo where PQ is power dissipated under quiescent current conditions, given by: PQ = VCC x ICC where VCC is the application device Supply Voltage an ICC is the maximum Supply Current given in the Electrical Characteristics and PPhHi is power generated due to either one of the phase outputs Ph1Hi or Ph2Hi being active, given by: PPhHi = IOL x VOL where IOL is the application Ph1Hi and Ph2Hi output currents an VOL is the maximum Low Level Output Voltage for the Ph1Hi and Ph2Hi outputs given in the Electrical Characteristics and PPhLo is power generated due to either one of the phase outputs Ph1Lo or Ph2Lo being active, given by: PPhLo = IOH x (VCC - VOH) where IOH is the application Ph1Lo and Ph2Lo output currents and VCC is the application device Supply Voltage and VOH is the minimum High Level Output Voltage for the Ph1Lo and Ph2Lo outputs given in the Electrical Characteristics ZXBM1004 Safe Operating Area
Document number: DS33428 Rev. 8 - 3 4 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 Electrical Characteristics (@TA = +25° C & VCC = 12V) Parameter Symbol Min Typ Max Unit Conditions Supply Voltage VCC 4.7 — 18 V — Supply Current ICC — 6 8.5 mA No load (Note 1) Hall Amp Input Voltage VIN 40 — — mV diff p-p Hall Amp Common Mode Voltage VCM 0.5 — VCC-1.5 V — Hall Amp Input Offset VOFS — ±7 — mV — Hall Amp Bias Current IBS — 400 650 nA — Ph1Lo, Ph2Lo Output High Voltage VOH VCC-2.2 VCC-1.8 — V IOH = 80mA Ph1Lo, Ph2Lo Output Low Voltage VOLA — 0.4 0.6 V IOL = 16mA (Note 2) Ph1Lo, Ph2Lo Output Low Voltage VOLB — 0.4 0.6 V IOL = 50µ A (Note 3) Ph1Lo, Ph2Lo Output Source Current IOH — — -80 mA — Ph1Lo, Ph2Lo Output Sink Current IOL — — 16 mA — Ph1Hi, Ph2Hi Output Low Voltage VOL — 0.5 0.7 V IOL = 100mA Ph1Hi, Ph2Hi Output Sink Current IOL — — 100 mA — CPWM Charge Current IPWMC -6.2 -7.6 -9 µA — CPWM Discharge Current IPWMD 65 80 95 µA — CPWM High Threshold Voltage VTHH 2.95 3 3.15 V — CPWM Low Threshold Voltage VTHL 0.94 1 1.11 V — PWM Frequency FPWM — 24 — kHz CPWM = 0.1nF ThRef Voltage VThRef 2.925 3.0 3.14 V IO ThRef = -100µ A ThRef Output Current IO ThRef — -0.2 -1 mA — SMIN Input Current IISMIN — -0.25 -0.5 µA Vin = 2V SPD Voltage Minimum VSPDL — 1 — V 100% PWM drive SPD Voltage Maximum VSPDH — 3 — V 0% PWM drive SPD Input Current IISPD — -0.8 -2 µA Vin = 2V CLCK Charge Current ILCKC -2 -3 — µA — CLCK Discharge Current ILCKD — 0.2 0.35 µA — CLCK High Threshold Voltage VTHH — 3 — V — CLCK Low Threshold Voltage VTHL — 1 — V — Lock Condition On: Off Ratio — — 1:12 — — — FG & RD Output Current IOL — — 5 mA — FG & RD Low Level Output Voltage VOL — — 0.5 V IOI = 5mA Notes: 1. Measured with pins H+, H-, CLCK and CPWM = 0V and all other signal pins open circuit. 2. Measured when opposing phase output is low. 3. Measured when opposing phase output is high.
Document number: DS33428 Rev. 8 - 3 5 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 Pin Functional Description H+ - Hall input H- - Hall input The rotor position is detected by a Hall sensor, with the output applied to the H+ and H- pins. This sensor can be either a 4 pin 'naked' Hall device or of the 3 pin buffered switching type. For a 4 pin device the differential Hall output signal is connected to the H+ and H- pins. For a buffered Hall sensor, the Hall device output is attached to the H+ pin, with a pull-up attached if needed, whilst the H- pin has an external potential divider attached to hold the pin at half VCC. When H+ is high in relation to H-, Ph2 is the active drive. ThRef - Network Reference This is a reference voltage of nominal 3V. It is designed for the ability to 'source' and therefore it will not 'sink' any current from a higher voltage. The total current drawn from the pin by the minimum speed potential divider to pin SMIN and any voltage setting network should not excee d 1mA at maximum temperature. SPD - Speed Control Input The voltage applied to the SPD pin provides control over the Fan Motor spe ed by varying the Pulse Width Modulated (PWM) drive ratio at the Ph1Lo and Ph2Lo outputs. The control signal takes the form of a voltage input of range 3V to 1V, representing 0% to 100% drive respectively. If variable speed control is not required , this pin can be left with an external potential divider to set a fixed speed or tied to ground to provide full speed i.e. 100% PWM drive. If required, this pin can also be used as an enable pin. The application of a voltage >3.0V will force the PWM drive fully o ff, in effect disabling the drive. SMIN-Sets Minimum Speed A voltage can be set on this pin via a potential divider between the ThRef and Gnd. This voltage is monitored by the SPD pin such that it cannot rise above it. As a higher voltage on the SPD pin r epresents a lower speed it therefore restricts the lower speed range of the fan. If this feature is not required, the pin is left tied to ThRef so no minimum speed will be set. If the fan is being controlled from an external voltage source onto the SPD pin , then either this feature should not be used or if it is required then a >1k▲ resistor should be placed in series with the SPD pin. CPWM-Sets PWM Frequency This pin has an external capacitor attached to set the PWM frequency for the Phase drive outputs. A capacitor value of 0.1nF will provide a PWM frequency of typically 24kHz. The CPWM timing period (TPWM) is determined by the following equation: Where: C = CPWM +15, in pF VTHH and VTHL are the CPWM pin threshold voltages IPWMC and IPWMD are the charge and discharge currents in µ A. TPWM is in ms As these threshold voltages are nominally set to VTHH = 3V and VTHL = 1V the equations can be simplified as follows: CLCK - Locked Rotor Timing Capacitor Should the fan stop rotating for any reason, i.e. an obstruction in the fan blade or a seized bearing, then the device will enter a Rotor Locked condition. In this condition after a predetermined time (T LOCK) the RD pin will go high and the Phase outputs will be disabled. After a further delay (TOFF) the controller will re-enable the Phase drive for a defined period (TON) in an attempt to re-start the fan. This cycle of (TOFF) and (TON) will be repeated indefinitely or until the fan re-starts. GND - Ground This is the device supply ground return pin and will generally be the most negative supply pin to the fan.
Document number: DS33428 Rev. 8 - 3 6 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 Pin Functional Description (Continued) RD - Locked Rotor Error Output This pin is the Locked Rotor output as referred to in the CLCK timing section above. It is high when the rotor is stopped and low when it is running. This is an open collector drive giving an active pull down with the high level being provided by an external pull up resistor. FG - Frequency Generator (Speed) Output This is the Frequency Generator output and is a buffered signal from the Hall sensor. This is an open collector drive giving an active pull down with the high level being provided by an external pull up resistor. Ph1Lo & Ph2Lo - Low-side External H-bridge Driver This pair of outputs drive the Low side of the external high power H-bridge devices which in turn drives the single phase winding. These outputs provide both the commutation and PWM waveforms. The outputs are of the Darlington emitter follower type with an active pull -down to help faster switch off when using b ipolar devices. When in the high state the outputs will provide up to 80mA of drive into the base or gates of external transistors as shown in the Typical Application circuit following. When in the low state the active Phase drive is capable of sinking up to 16mA when driving low to aid turn off times during PWM operation. When the Phase is inactive the output is held low by an internal pull-down resistor. Ph1Hi & Ph2Hi - High-side External H-bridge Driver These are the High side outputs to the external H -bridge and are open collector outputs capable of sinking 100mA. This signal provides commutation only to the H-bridge. V+OP - Phase Outputs Supply Voltage This pin is the supply to the Phase outputs and will be connected differently dependent upon external transistor type. For bipolar devices this pin will be connected by a resistor to the VCC pin. The resistor is used to control the current into the transistor base so its value is chosen accordingly. For MOSFET devices the pin will connect directly to the VCC pin. VCC - Applied Voltage This is the device internal circuitry supply voltage. For 5V to 12V fans this can be supplied directly from the Fan Motor supply. For fans likely to run in excess of the 18V maximum rating for the device this will be supplied from an external regulator such as a Zener diode. RD Timing Waveform
Document number: DS33428 Rev. 8 - 3 9 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 Drive Transistors Diodes Incorporated offers a range of de vices that are ideally suited to interface between the ZXBM1004 controller and the motor. The following tables show a selection of products ranging from single packaged H -bridge devices to individual power components that can be used in this application. If your needs are not covered by this select ion then please refer to the more comprehensive listings that can be found on the Diodes Incorporated’s website: www.diodes.com. Description Part Number Content BVCEO V IC A ICM A VCE(sat) @ IC = 2A max. mV Package High Side Switch Bipolar ZXT953K PNP -100 -5 -10 -175 ZXT951K ZXT790AK PNP PNP -60 -40 -15 -165 -450 DPAK Marking Information Device Package Reel Size Tape Width Package Qty. Carrier ZXBM1004Q16TA QSOP-16 7" (180mm) 12mm 500 Reel ZXBM1004Q16TC QSOP-16 13" (330mm) 12mm 2,500 Reel Device Marking ZETEX ZXBM 1004 Description Part Number Content BVDSS V ID A IDM A RDS(ON) @ VGS = 10V max. mΩ Package MOSFET H-Bridge ZXMHC6A07T8 2 x N 2 x P -60 1.8 -1.5 8.7 -7.5 300
425 SM-8
2 x N 30 3.1 14.5 120 SM-8 2 x P -30 -2.3 -10.8 210 N + P Channel MOSFET ZXMC4559DN8 N P 60 4.7 22 55 SO8 -60 -3.5 -18 105 ZXMC3A16DN8 N P 30 6.4 30 35 SO8 -30 -5.4 -25 48 Low Side Switch MOSFET ZXMN10A09K ZXMN6A09K ZXMN3A04K N N N 100 7.7 11.2 18.4 DPAK
Document number: DS33428 Rev. 8 - 3 10 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. QSOP-16 QSOP-16 Dim Min Max Typ A 1.55 1.73 - A1 0.10 0.25 - A2 1.40 1.50 - b 0.20 0.30 - c 0.18 0.25 - D 4.80 5.00 - E 5.79 6.20 - E1 3.81 3.99 - e 0.635 BSC h 0.254 0.508 - L 0.41 1.27 - L1 1.03 REF L2 0.254 BSC R 0.0762 - - R1 0.0762 - - ZD 0.23 REF θ 0° 8° - θ1 5° 15° - θ2 0° - - All Dimensions in mm Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. QSOP-16 Dimensions Value (in mm) C 0.635 X 0.350 X1 4.795 Y 1.450 Y1 6.400 D E1 E ZD E/2 E1/2 e b PIN 1 A SEE DETAIL 'A' L GAUGE PLANE SEATING PLANE ( 4x) ( 4x ) h h R c Y Y X C
Document number: DS33428 Rev. 8 - 3 11 of 11 www.diodes.com July 2022 © 2022 Copyright Diodes Incorporated. All Rights Reserved. ZXBM1004 IMPORTANT NOTICE 1. DIODES INCORPORATED (Diodes) AND ITS SUBSIDIARIES MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON -INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 2. The Information contained herein is for informational purpose only and is provided only to illustrate the operation of Diodes ’ products described herein and application examples. Diodes does not assume any liability arising out of the application or use of this document or any product described herein. This document is intended for skilled and technically trained engineering customers and users who d esign with Diodes’ products. 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