ar y n i im prel iC-GE100 PWM RELAY/SOLENOID DRIVER Rev A1, Page 1/12 FEATURES APPLICATIONS ♦ ♦ ♦ ♦ ♦ PWM drive for inductive loads (e.g. 6/12 V relays, electrovalves) from 24 V ♦ Relay low-/high-side switch ♦ ♦ ♦ ♦ ♦ Current control for inductive actuators at 24 V (10 to 36 V) Power saving and power dissipation reduced switching Individual setting of energising and hold current Contact conserving switching of relays synchronous to the mains High efficient current control up to 100 mA Monitoring of coil current, supply voltage and temperature Shutdown with overtemperature and undervoltage Status indication via LED or logic output Fast demagnetising with 15 V countervoltage PACKAGES DFN8-3x3 BLOCK DIAGRAM VB CVB LED DIAG VB SYNC iC-GE100 SW EN IACT IHOLD RACT LSW 0.01..10H GND RHOLD GND Copyright © 2013 iC-Haus http://www.ichaus.com ar y n i im prel iC-GE100 PWM RELAY/SOLENOID DRIVER Rev A1, Page 2/12 DESCRIPTION iC-GE100 is a PWM driver for inductive loads, such as relay coils, solenoid valves and other inductive loads. The setpoints for the coil’s energising and hold current are pre-set by means of external resistors RACT and RHOLD. These currents can be set in a range from 10 to 100 mA. The iC-GE100 switches from energising to hold mode after 50 ms provided that the set energising current has been reached. The changeover between energising and hold modes is suitable for typical relay drives which require a powerful initial energising current which can then be reduced after closing the air gap in a magnetic circuit. The quadratic dependence on the current intensity means that cutting the current by half reduces the power dissipation by ca. 75%. Using PWM the output current is controlled to the values set at RACT and RHOLD. The internal flyback diode maintains the current during the switch- ing pauses. The switching frequency of ca. 80 kHz is provided by the internal oscillator. The device is shutdown by a Low signal at input EN or the removal of the power supply; the current reduction in the coil is supported by the changeover of the free-wheeling circuit. The Zener diode now active permits higher free-wheeling voltages and thus a quicker demagnetising of the coil. The status indicator LED is constantly ON when hold mode is functioning correctly and flashes with low voltage, excessive temperature or when the coil current in energise mode has not reached the setpoint. The driver output is shutdown with low voltage or excessive temperature. Alternatively to using an LED output DIAG signals the correct operating by outputting a high signal. The input signal at EN can be synchronised with the zero crossing at input SYNC. Thus by using an external R/C network, the switching of the coil can be synchronised with the load current of e.g. the relay. PACKAGING INFORMATION DFN8-3x3 PIN CONFIGURATION DFN8 3 mm x 3 mm 8 7 6 5 Backside Pad/Shield (BP) 1 2 3 PIN FUNCTIONS No. Name Function 1 2 3 4 5 6 7 8 GND SW VB IHOLD IACT DIAG SYNC EN Ground PWM Output +10...36 V Supply Voltage Hold Current Setup Energising Current Setup Status Output Sync Input Enable Input 4 The Thermal Pad is to be connected to a Ground Plane (GND) on the PCB. Only pin 1 marking on top or bottom defines the package orientation ( subject to change). GE100 label and coding is iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 3/12 PACKAGE DIMENSIONS DFN8-3x3 All dimensions given in mm. RECOMMENDED PCB-FOOTPRINT 2.40 5 17 R0. 0.65 0.35 2.95 0.70 0.90 1.65 SIDE BOTTOM TOP 3 0.65 0.27 0.40 3 1.70 2.44 dra_dfn8-2_pack_1, 15:1 iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 4/12 ABSOLUTE MAXIMUM RATINGS Beyond these values damage may occur; device operation is not guaranteed. Item No. Symbol Parameter Conditions Unit Min. Max. G001 V(VB) Voltage at VB -0.3 37 V G002 I(VB) Current in VB -100 6 mA G003 V(SW) Voltage at OUT -0.3 53 V G004 I(SW) Output Current in OUT -6 100 mA G005 V(DIAG) Voltage at LED -0.3 37 V G006 I(DIAG) Current in LED -6 8 mA G007 V(IACT) Voltage at ISET -0.3 7 V G008 I(IACT) Current in ISET -6 6 mA G009 V(IHOLD) Voltage at IHOLD -0.3 7 V G010 I(IHOLD) Current in IHOLd -6 6 mA G011 V(EN) Voltage at IN -0.3 37 V G012 I(EN) Current in IN -6 6 mA G013 V(SYNC) Voltage at SYNC -6 37 V G014 I(SYNC) Current in SYNC -6 6 mA G015 VD() Susceptibility to ESD at all pins 2 kV G016 Tj Junction Temperature -40 150 °C G017 Ts Storage Temperature -40 150 °C HBM 100 pf discharged through 1.5 kΩ THERMAL DATA Operating Conditions: VB = 10...36 V, LSW = 0.01...10 H, RACT = 6.2 k...62 kΩ, RHOLD = 6.2 k...62 kΩ Item No. Symbol Parameter Conditions Unit Min. T01 Ta Operating Ambient Temperature Range T02 Rthja Thermal Resistance Chip/Ambient Typ. -40 surface mounted, thermal pad soldered to ca. 2 cm² heat sink All voltages are referenced to ground unless otherwise stated. All currents flowing into the device pins are positive; all currents flowing out of the device pins are negative. 30 Max. 85 °C 40 K/W iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 5/12 ELECTRICAL CHARACTERISTICS Operating Conditions: VB = 10...36 V, LSW = 0.01...10 H, RACT = 6.2 k...62 kΩ, RHOLD = 6.2 k...62 kΩ, Tj = -40...125 °C. Item No. Symbol Parameter Conditions Unit Min. Typ. Max. Total Device 001 VB Permissible Supply Voltage Range 10 002 I(VB) Supply Current in VB EN < 0.8 V 20 µA 003 I(VB) Supply Current in VB EN = hi 0.5 4 mA 004 Vc()lo Clamp Voltage lo at all Pins I() = -4 mA, other Pins open -1.4 -0.3 V 005 Vc()lo Clamp Voltage lo SYNC I() = -4 mA, other pins open -7 V 006 Vc()hi Clamp Voltage hi at VB, EN, DIAG, SYNC I() = 4 mA, other Pins open 37 V 007 Vc()hi ClampVoltage hi at IACT, IHOLD I() = 4 mA, other pins open 7 V 008 Vc()hi ClampVoltage hi at IACT, IHOLD I() = 4 mA, other pins open 7 009 Vc()hi Clamp Voltage hi at SW 10 I(SW) = 4 mA, referenced to VB, other pins open 36 V V 17 V Driver Output OUT 101 Vs()lo Saturation Voltage lo I(SW) = 100 mA (cf. Fig. 1) 600 mV 102 Vs()lo Saturation Voltage lo I(SW) = 10 mA (cf. Fig. 1) 100 mV 103 I(SW) PWM-Current Range 100 mA 104 Isc() Short-circuit Current V(SW) = VB tbd mA 105 Vc()hi Clamp Voltage hi at PWM-FreeWheeling Vc()hi = V(SW) − VB; EN = hi, I(SW) = 100 mA (cf. Fig. 1) 600 mV 106 Vc()hi Clamp Voltage hi at PWM-FreeWheeling Vc()hi = V(SW) − VB; EN = hi, I(SW) = 10 mA (cf. Fig. 1) 100 mV 107 Vc()off Clamp Voltage hi at Turn-off Vc()hi = V(SW) − VB; EN: hi → lo, I(SW) = 100 mA (cf. Fig. 1) 17 V 108 IIK() Leakage Current IN = lo, V(SW) = 0...VB 10 µA 109 twon()min Minimum PWM Turn-on Duration EN = hi, I(SW) > I(SW)act resp. I(SW)hold (cf. Figure 1) 250 1000 ns V 10 100 12 15 1 Input IN 201 Vt()on Threshold Voltage hi 1.1 1.4 202 Vt()off Threshold Voltage lo 0.8 1.1 V 203 Vt()hys Hysteresis Vt()hys = Vt()on − Vt()off 200 400 mV 204 lpd() Pull-down Current V(EN) = 0.8...36 V 20 µA 205 tp(VB-SW) Turn-on Delay after power-up EN = VB, VB = VBoff → VBon 40 µs 206 tp(EN-SW) Turn-on Delay EN: lo → hi until SW active 30 µs 207 tp(EN-SW) Turn-off Delay EN: hi → lo until SW inactive 10 µs 208 tp(ENDIAG) 20 µs Delay Time from EN to DIAG = hi no error or LED permanently on Status Monitor DIAG 401 Ipd() Pull-down Current 402 VBlo Permissible Supply Voltage for LED operation at DIAG V(DIAG) = 6 V...VB, SW active, no error 3 403 V()hi Hi-Level at DIAG 404 f() Frequency on Error 405 Vs()lo Saturation Voltage lo I(DIAG) = 200 µA, without LED 406 Ipu() Pull-up Current V(DIAG) = 0 ...4 V 407 VBon Turn-on Threshold at VB V(DIAG): lo → hi 408 VBoff Undervoltage Threshold at VB Decreasing voltage VB, V(DIAG): hi → lo 409 VBhys Hysteresis VBhys = VBon − VBoff 200 410 Toff Thermal Shutdown Temperature 411 Ton Thermal Release Temperature Decreasing temperature 412 Thys Thermal Shutdown Hysteresis Thys = Toff − Ton 10 5 6 without LED 3.4 8 mA 36 V 5.0 V 1.8 2.4 3.6 Hz 0.4 V -120 -100 -80 µA 8 8.5 9 V 7.5 8 8.5 V 500 800 mV 140 170 °C 120 150 °C 30 °C 20 iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 6/12 ELECTRICAL CHARACTERISTICS Operating Conditions: VB = 10...36 V, LSW = 0.01...10 H, RACT = 6.2 k...62 kΩ, RHOLD = 6.2 k...62 kΩ, Tj = -40...125 °C. Item No. Symbol Parameter Conditions Unit Min. Typ. Max. 1.14 1.20 1.26 V Reference IACT and IHOLD 701 V() Reference Voltage IACT and IHOLD 702 Isc() Short-Circuit Current V(IHOLD) = 0 V or V(IACT) = 0 V -2.5 -1.8 -0.3 mA 703 K1 Transfer Value for Energising Current RACT = K1 / I(SW)act I(SW)act = 10...100 mA 560 620 680 AΩ 704 K2 Transfer Value for Hold Current RHOLD = K2 / I(SW)hold I(SW)hold = 10...100 mA 560 620 680 AΩ 80 Oscillator J01 fosc Mean Oscillator Frequency (fmax + fmin) / 2 60 120 kHz J02 df Frequency Variation (fmax − fmin) / (2 ∗ fosc) 12 15 % -20 20 mV -10 10 nA Synchronisation SYNC S01 Vth()sync Trigger Threshold at SYNC S02 Ilk() Leakage Current V(SYNC) = -3 V ... 3 V iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 7/12 ELECTRICAL CHARACTERISTICS: Diagrams Figure 1: Operation modes: energise mode, hold mode and turn-off tmag ≈ I(SW )act × LSW VB (1) tdmag ≈ I(SW )hold × LSW Vc (SW − VB)off (2) ar y n i im prel iC-GE100 PWM RELAY/SOLENOID DRIVER Rev A1, Page 8/12 APPLICATIONS INFORMATION Setting the coil current The following equations can be given for the energise and hold modes of the PWM control using Electrical Characteristics Nos. 703 resp. 704: RACT = RHOLD = Example For a relay with a starting current of 70 mA and 40 mA hold current the following applies: K1 I(SW )act (3) RACT = K2 I(SW )hold (4) RHOLD = 620ΩA = 8.8 k Ω 0.07 A (5) 620ΩA = 15.5 k Ω 0.04 A (6) Application circuits 10..36V 10..36V LED DIAG LED DIAG VB VB SYNC SYNC CVB 100nF CVB 100nF iC-GE iC-GE100 iC-GE100 SW SW EN EN IACT RACT 6.2k IHOLD IACT GND RACT 6.2k RHOLD 62k GND IHOLD GND RHOLD 62k GND Figure 2: Activation by switching VB 10..36V DIAG DIAG VB SYNC CVB 100nF EN iC-GE100 SW EN IACT RACT 6.2k IHOLD GND RHOLD 62k GND Figure 4: Activation via EN feedback from DIAG with 5 V logic levels Figure 3: Activation by switching GND ar y n i im prel iC-GE100 PWM RELAY/SOLENOID DRIVER Rev A1, Page 9/12 10..36V LED 10..36V DIAG VB SYNC CVB 100nF LED iC-GE100 DIAG SW EN VB SYNC IACT RACT 6.2k IHOLD GND CVB 100nF RHOLD 62k iC-GE100 SW EN IACT RACT 6.2k IHOLD GND RHOLD 62k GND GND Figure 5: High-side driver for relays with freewheeling diode Figure 6: Low-side driver for relays with free-wheeling diode CSN 10P ACN CSP 10P 10..36V LED CVB 100nF DIAG VB 50Hz RS SYNC CSG 1nF 100K RSG 2MEG RL iC-GE100 ACP SW EN EN IACT RACT 6.2k IHOLD GND RHOLD 62k GND Figure 7: Utilising the SYNC input V(AC) Time By means of resistors RS* and capacitors CS* a phase shifted signal at SYNC is derived from the 50 Hz load supply. Thus the relay is activated resp. deactivated with zero crossing of the load supply after working EN. V(EN) Time V(SYNC) Time The phase shift is used to compensate the switching delay of the relay so that the load can be switched at zero current. Time The benefit from synchronous switching may be utilised, if the switching times are short and reproducible. IACT IHOLD I(SW ) I(RL) Time TRelon Figure 8: Utilising the SYNC input iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 10/12 EVALUATION BOARD iC-GE100 comes with an evaluation board for test purpose. Figures 9 and 10 show both the schematic and the component side of the evaluation board. Figure 9: Schematic of the evaluation board iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 11/12 Figure 10: Evaluation board (component side) iC-Haus expressly reserves the right to change its products and/or specifications. An info letter gives details as to any amendments and additions made to the relevant current specifications on our internet website www.ichaus.de/infoletter; this letter is generated automatically and shall be sent to registered users by email. Copying – even as an excerpt – is only permitted with iC-Haus’ approval in writing and precise reference to source. iC-Haus does not warrant the accuracy, completeness or timeliness of the specification and does not assume liability for any errors or omissions in these materials. The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or areas of applications of the product. iC-Haus conveys no patent, copyright, mask work right or other trade mark right to this product. iC-Haus assumes no liability for any patent and/or other trade mark rights of a third party resulting from processing or handling of the product and/or any other use of the product. iC-GE100 PWM RELAY/SOLENOID DRIVER ar y n i im prel Rev A1, Page 12/12 ORDERING INFORMATION Type Package Order Designation iC-GE100 iC-GE100 DFN8 3 mm x 3 mm Evaluation Board iC-GE100 DFN8-3x3 iC-GE100 EVAL GE2D For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (0) 61 35 - 92 92 - 0 Fax: +49 (0) 61 35 - 92 92 - 192 Web: http://www.ichaus.com E-Mail: [email protected] Appointed local distributors: http://www.ichaus.com/sales_partners