ar y n i im prel iC-DXC DIGITAL SENSOR I/O DRIVER Rev A0.8, Page 1/11 FEATURES APPLICATIONS ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Digital sensors ♦ Light barriers ♦ Proximity switches Configurable high-side, low-side and push-pull operation 200 mA output current I/O-Link complaint 5 µs input filter for spike suppression Reverse polarity protection Current limited output (< 450 mA) Wide supply voltage range from 8 to 30 V Driver shut-down with over temperature Integrated free-wheeling diode for inductive loads Sensor supply voltage output of 5 V at 10 mA PACKAGES DFN8 3x3 BLOCK DIAGRAM ..30V VB REG + VREF High Side Switch 5V <150 - VOUT VB CVB 1μF C 36V CVOUT 100nF.. OUT DIGITAL INPUT OE & 36V & NIN iC-DXC GND GND Low Side Switch MON FILT CFO Copyright © 2011 iC-Haus =1 ++ + VRH VRL http://www.ichaus.com ar y n i im prel iC-DXC DIGITAL SENSOR I/O DRIVER Rev A0.8, Page 2/11 DESCRIPTION The iC-DXC is a simple I/O circuit capable of driving ohmic, inductive and capacitive loads and features integrated reverse polarity protection. Forcing the output pin OUT from his current state is signaled at pin MON. This can be used to implement an IO-Link Wake-Up detection. The output current is at least 200 mA from a supply voltage of 8 to 30 V. Output transitions are slew-rate limited to reduce interference. With input OE = high the output works as a push-pull driver controlled by pin NIN. If pin NIN is set either to low or high, the output acts as a high-side (PNP) or low-side (NPN) driver respectively, controlled by the input OE. The output is current limited to 450 mA and short circuit proof by shutting down the driver with excessive temperature. A regulated 5 V low power supply is available at pin VOUT to supply external circuitry with up to 10 mA. PACKAGES DFN8 3x3 PIN CONFIGURATION 8 PIN FUNCTIONS No. Name Function 7 6 5 3 4 Backside Pad/Shield (BP) 1 2 1 2 3 4 5 6 7 8 VOUT MON GND NIN OE CFO OUT VB Regulated +5 V Voltage Monitor Output Ground Input Output Enabled Feedback Channel Output Driver Output Supply Voltage iC-DXC DIGITAL SENSOR I/O DRIVER ar y n i im prel Rev A0.8, Page 3/11 PACKAGE DIMENSIONS 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 0.30 0.40 3 1.65 2.38 dra_dfn8-1_pack_1, 15:1 All Dimensions in mm. ar y n i im prel iC-DXC DIGITAL SENSOR I/O DRIVER Rev A0.8, Page 4/11 ABSOLUTE MAXIMUM RATINGS Beyond these values damage may occur; device operation is not guaranteed. Absolute Maximum Ratings are no operating conditions! Integrated circuits with system interfaces, e.g. via cable accessible pins (I/O pins, line drivers) are per principle endangered by injected interferences, which may compromise the function or durability. The robustness of the devices has to be verified by the user during system development with regards to applying standards and ensured where necessary by additional protective circuitry. By the manufacturer suggested protective circuitry is for information only and given without responsibility and has to be verified within the actual system with respect to actual interferences. Item Symbol No. G001 VB G002 OUT G003 GND Parameter Conditions Unit Min. Supply Voltage OUT Voltage GND Voltage Referenced to lowest voltage of GND, OUT Referenced to highest voltage of GND, OUT -36 Referenced to lowest voltage of VB, GND Referenced to highest voltage of VB, GND -36 Referenced to lowest voltage of VB, OUT Referenced to highest voltage of VB, OUT -36 Max. 36 V V 36 V V 36 V V 6.5 mJ G004 Es() Maximum Surge Energy as indication for external protection design Single pulse test between each pins of VB, OUT or GND. Pulse magnitude less than 55 V, duration less than 100 µs G005 Vd() ESD Susceptibility at all pins HBM, 100 pF discharged through 1.5 kΩ 2 kV G006 Tj Junction Temperature -40 150 °C G007 Ts Storage Temperature -40 150 °C THERMAL DATA Operating Conditions: VB = 8..30 V Item No. T01 Symbol Parameter Conditions Unit Min. Ta Operating Ambient Temperature Range no thermal shutdown 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. -40 Typ. Max. +150 °C iC-DXC DIGITAL SENSOR I/O DRIVER ar y n i im prel Rev A0.8, Page 5/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VB = 8...30 V, Tj = -40...150 °C, unless otherwise stated Item No. Symbol Parameter Conditions Unit Min. Typ. Max. Total Device 001 Vc()lo Clamp Voltage lo at NIN, OE, VOUT I() = -1 mA 002 003 VB Permissible Supply Voltage Referenced to GND I(VB) Supply Current in VB no load, NIN = hi, OE = lo NIN = hi, OE = hi NIN = lo, OE = hi Turn-on threshold 8 24 30 V 1.2 1.4 1.6 mA mA mA V(VB)on 8 V Ilk(GND)rp Reverse Polarity Leakage Current V(VB) = 0; V(OUT) = 0; V(GND)= 0...30 V 300 uA 006 Ilk(OUT)rp Reverse Polarity Leakage Current V(VB)=0;V(GND)=0; V(OUT)= 0...30 V 300 uA 007 Ilk(VB)rp V(OUT) =0 ; GND open; ; V(VB)= 0...30 V 300 uA NIN = hi, OE = hi I(OUT) = 100 mA I(OUT) = 200 mA 1.5 2.1 V V Output characteristics 101 Vs(OUT)lo Saturation voltage Low-Side driver 102 6 V 004 005 Reverse Polarity Leakage Current increasing VB -1.4 Vs(OUT)hi Saturation voltage High-Side driver NIN = lo, OE = hi I(OUT) = -100 mA I(OUT) = -200 mA 103 Isc()lo Short-Circuit Current lo in OUT V(OUT) = 3...VB 200 450 mA 104 105 Isc()hi Short-Circuit Current Hi in OUT V() = 0...VB − 3 V -450 -200 mA llk() Leakage Current at OUT OUTPUT Disabled V(OUT) = -6...0 V V(OUT) = 0...VB V(OUT) > VB...30 V -100 -40 0 0 40 100 µA µA µA 40 V/µs Slew Rate (switch off → on, switch on → off ) -1.5 -2.1 VB = 30 V, Cl = 2.2 nF, I(OUT) = 0 V V 106 SR() 107 Vfw(OUT)lo Freewheeling Voltage I(OUT) = -1 mA, with reference to VB -47 -36 V 108 Vfw(OUT)hi Freewheeling Voltage I(OUT) = 1 mA, with reference to GND 36 47 V increasing Tj 150 180 °C 2 V Temperature Monitor 201 Toff Over-temperature shutdown Inputs OE, NIN 301 Vt()hi Input Threshold Voltage hi at NIN, OE 302 Vt()lo Input Threshold Voltage lo at NIN, OE 303 Vt()hys Hysteresis at NIN, OE Vt()hys = Vt()hi − Vt()lo 304 Ipd() Pull-Down Current at NIN, OE V() > 0.4 V 305 tpio Propagation Delay NIN, OE → OUT 306 tsup() Permissible Spurious Pulse Width at NIN, OE 307 ttrig() Required Pulse Width at NIN, OE REG Series Regulator 401 V(VOUT) Regulated output voltage 402 C(VOUT) 403 Isc(VOUT) Short circuit current at VOUT Capacitor at VOUT 0.8 V 200 mV 2 150 µA 2.1 6.5 µs 1.6 µs 4 µs VB = 9...30 V, I(VOUT) = 10...0 mA VB = 8...9 V, I(VOUT) = 10...0 mA 4.7 4.5 5.3 5.3 V V I(VOUT) = 0 I(VOUT) > 0 0 0.1 10 10 µF µF -125 mA VOUT connected to GND iC-DXC DIGITAL SENSOR I/O DRIVER ar y n i im prel Rev A0.8, Page 6/11 ELECTRICAL CHARACTERISTICS Operating Conditions: VB = 8...30 V, Tj = -40...150 °C, unless otherwise stated Item No. Symbol Parameter Conditions Unit Min. Typ. Max. Feedback Channel 501 Vt1(OUT)hi Input Threshold 1 hi at OUT VB < 18 V 59 66 74 %VBR 502 Vt1(OUT)lo Input Threshold 1 lo at OUT VB < 18 V 44 50 56 %VBR 503 Vt2(OUT)hi Input Threshold 2 hi at OUT VB > 18 V 10 11.3 12.5 V 504 Vt2(OUT)lo Input Threshold 2 lo at OUT VB > 18 V 8.3 9 10.5 V 505 Vt()hys Hysteresis Vt(OUT)hys = Vt(OUT)hi − Vt(OUT)lo 1 506 tpcf Propagation Delay OUT → CFO V(CFO) = 10 ↔ 90% 1 5 µs 507 Vs()lo Saturation Voltage lo at CFO/MON I(CFO/MON) = 1.0 mA 0.4 V 508 Isc()lo Short Circuit Current lo in CFO/MON V(CFO/MON) = 0.4 V...VOUT 1 50 mA 509 Ilk() Leakage Current at CFO Open collector mode, V(CFO) = 0 V...VOUT, CFO = off -10 10 µA 510 tdre Propagation Delay OUT → MON Short-circuit 5.5 14 us V ar y n i im prel iC-DXC DIGITAL SENSOR I/O DRIVER Rev A0.8, Page 7/11 DESCRIPTION OF FUNCTIONS iC-DXC is a current limited switching channel which enables digital sensors to drive peripheral elements. They are designed to cope with high driver currents. The switches are reverse-polarity protected, feature a free-wheeling circuit for inductive loads, and a current limited output. Reverse polarity protection The pins VB, OUT an GND on the line side of the chip are reverse polarity protected. As far as the maximum voltage ratings are not exceeded, no possible supply combination at the line side pins can damage the chip. I(OUT) Isc()lo GND V(OUT) 3V A B VB C 36V Figure 1: OUT characteristic when Low side active Output characteristics of OUT The switching channel is current limited to a value between 150mA and 450mA. (cf. Electrical Characteristics Nos. 103, 104). The current limitation works only for voltages higher than 3 V at OUT resp. lower than VBO − 3 V. For smaller output voltages the current limitation is reduced in order to minimize the saturation voltages without increasing the power dissipation. Figures 1 and 2 show the characteristic of the switching channels when activated. Region "A" is the saturation range, where the current limitation is not fully active yet and region "B" is the current limited range. Region "C" corresponds to the free-wheeling circuit activated. The switching channel is designed so that the low side can only sink current and high side can only source current (no reverse current). Free-wheeling circuit for inductive loads The free-wheeling circuit is always present and does not depend on the current output status. It is activated by voltages higher than 36 V at OUT referenced to GND or lower than -36 V at OUT referenced to VB. In that case the correspondent channel will switch on without current limitation (see Figure 3). I(OUT) I(OUT) VB-36V 36V C GND B A VB V(OUT) VB-36V Isc()hi V(OUT) GND 36V Figure 2: OUT characteristic when high side active VB GND+36V 36V Figure 3: Free-wheeling characteristic ar y n i im prel iC-DXC DIGITAL SENSOR I/O DRIVER Rev A0.8, Page 8/11 OPERATING MODES The iC-DXC can be operated in high-side (PNP), lowside (NPN) and push-pull (PP) switch mode. Figure 4 shows the high-side operation where NIN pin must be kept low and the OE pin controls the switch. Figure 5 shows the low-side operation where NIN pin must be kept high and the OE pin controls the switch. Figure 6 shows the push-pull operation where OE pin must be kept high and the NIN pin controls the switch. If the OUT signal differs from what declared in tables 4, 5 and 6 (due to external forcing) for more than 14 µs (cf. Electrical Characteristics No. 510), this event will be signalled by a low level at MON output. In case of a short circuit at OUT and resulting temperature shutdown, logic level of MON will be undefined. VB REG + VREF VB <150 36V OUT DIGITAL INPUT OE CHEN <150 C R LOAD 36V CVOUT 100nF.. OUT DIGITAL INPUT OE CHEN 36V & NIN VOUT GND iC-DXC VOUT GND Low Side Switch MON =1 FILT CFO ++ + VRH VRL Figure 5: Configuration as Low-Side (NPN-Switch) Output Table. Low-side mode (NPN-Switch) OE NIN OUT CFO Mode L H Z (H) L Low-Side, passive pull up H H L H Low-Side, active pull down OUT VB 36V VOUT VOUT R LOAD & iC-DXC CFO REG + GND Low Side Switch VREF VOUT <150 ++ + 36V OUT DIGITAL INPUT VRH OE & VRL 36V GND & NIN CHEN VOUT Figure 4: Configuration as High-Side (PNP-Switch) VB CVB 1μF High Side Switch C CVOUT 100nF.. =1 ..30V 5V - GND MON FILT OUT & & NIN VB 5V - VOUT ..30V CVB 1μF High Side Switch Table 5: Output Function table Fig. 5. Low-side mode (NPN-Switch) with external pull-up. C CVOUT 100nF.. + VREF CVB 1μF High Side Switch 5V - VOUT ..30V VB REG iC-DXC VOUT GND GND Low Side Switch MON FILT CFO =1 ++ + VRH VRL Figure 6: Configuration as Pushpull Output Table. High-side mode (PNP-Switch) OE NIN OUT CFO Mode L L Z (L) H High-Side, passive pull down H L H L High-Side, active pull up Table 4: Output Function table Fig. 4. High-side mode (PNP-Switch) with external pull-down. Output Table. Push-Pull mode OE NIN OUT CFO Mode H H L H Push-Pull, active pull down H L H L Push-Pull, active pull up Table 6: Output Function table Fig. 6. Push-Pull mode ar y n i im prel iC-DXC DIGITAL SENSOR I/O DRIVER Rev A0.8, Page 9/11 CIRCUIT PROTECTION The iC-DXC is reverse polarity protected via internal circuitry. As far as the maximum voltage ratings are not exceeded, no possible supply combination at the line side pins (VB, GND and OUT) can damage the chip. Since the chip current consumption is relatively low, discharging of the backup capacitor C1 can be very slow, and injected charge through disturbances may in general result in capacitor voltage exceeding maximum ratings, leading to malfunction or destruction of circuitry and associated parts. Thus EMC requirements will afford more external circuitry. Figure 7 shows the iC-DXC with the additional protective device D1, D2 and D3. VB REG + 8 1 VREF <150 C1 1μF High Side Switch C 36V C3 100nF.. OUT DIGITAL INPUT 3 5 OE 7 & 4 iC-DXC 2 MON 4 6 CFO PSD36 D3 C2 1nF & NIN 5 6 PSD36 D2 36V 2 7 5V - VOUT 8 FILT =1 GND 3 D1 PSD36 1 Low Side Switch ++ + VRH VRL EPAD Figure 7: Circuit schematic showing protective devices For over-voltage protection, the suppressor diodes D1,D2 and D3 absorbs transients on supply line injected externally on the cable. Clamp voltage of the diodes should be rated slightly above maximum specified supply voltage. These currents can be passed to ground or to VB by the internal ESD diodes of the iC-DXC. Whereas negative current injection will simply be drained off to ground, positive current injection will charge capacitor C1 further to higher voltages. If not suppressor diodes nor any other over-voltage protection is implemented, the backup capacitor C1 should be kept small. A typical 100nF value is normally OK. Suggested protective devices At VBmax of 36V, suppressor diodes with a breakdown voltage from 36V has to be chosen in order to minimize the energy in iC-DXC for higher Voltages. For example Diode type like Vishay GSOT36C or PJSD36W from Panjit should be enough as protection. ar y n i im prel iC-DXC DIGITAL SENSOR I/O DRIVER Rev A0.8, Page 10/11 TIMING DESCRIPTION The iC-DXC has a built-in spurious pulse suppression that prevents short (undesired) pulses at the input pins from reaching the output. Every pulse at OE or NIN pins shorter than 1.6 µs (cf. Electrical Characteristics No. 306) will be ignored and the output will not react. The minimum required pulse length to be sure that the output reacts is 4 µs (cf. Electrical Characteristics No. 307). That means that every pulse longer than 4 µs will be propagated to the output but with an additional propagation delay of 1.2 µs maximum. The resulting maximum propagation delay is 5.2 µs (cf. Electrical Characteristics No. 305). tpio ttrig() VB REG + VREF VB CVB 1μF High Side Switch 5V <150 - VOUT ..30V C NEP 36V CVOUT 100nF.. OUT DIGITAL INPUT OE & 36V & NIN iC-DXC EN GND GND Low Side Switch MON FILT CFO =1 ++ + VRH VRL short-circuit tpcf tdre NIN Figure 9: Block diagram with EN and NEP internal signals EN NEP OUT CFO MON Figure 8: Timing diagram in push-pull operation mode with OE high 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. As a general rule our developments, IPs, principle circuitry and range of Integrated Circuits are suitable and specifically designed for appropriate use in technical applications, such as in devices, systems and any kind of technical equipment, in so far as they do not infringe existing patent rights. In principle the range of use is limitless in a technical sense and refers to the products listed in the inventory of goods compiled for the 2008 and following export trade statistics issued annually by the Bureau of Statistics in Wiesbaden, for example, or to any product in the product catalogue published for the 2007 and following exhibitions in Hanover (Hannover-Messe). We understand suitable application of our published designs to be state-of-the-art technology which can no longer be classed as inventive under the stipulations of patent law. Our explicit application notes are to be treated only as mere examples of the many possible and extremely advantageous uses our products can be put to. iC-DXC DIGITAL SENSOR I/O DRIVER ar y n i im prel Rev A0.8, Page 11/11 ORDERING INFORMATION Type Package Order Designation iC-DXC DFN8 3x3 mm iC-DXC DFN8 3x3 For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (61 35) 92 92-0 Fax: +49 (61 35) 92 92-192 Web: http://www.ichaus.com E-Mail: [email protected] Appointed local distributors: http://www.ichaus.com/sales_partners