SRND-90A1A0 BEL | Alldatasheet

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Technical content

The SRND -90A1A0 series are non -isolated step down DC/DC converters and designed to be compatible with Intel VRM11.1 requirement. Standard features include current monitor, remote on/off, over current protection, remote sense, 8 -bit VID digital voltage programming and a power good signal. This product also makes use of adaptive positioning to improve transient response performance. These products may be used almost anywhere low-voltage silicon is being employed and a nominal 12 Vdc source is available. Typical applications include file server, workstation and other computing applications.

  • VRM11.1 Compatible; 9-13.8 VDC Input; 0.5-1.6 VDC Output
  • Non-isolated
  • Fixed Frequency
  • High Efficiency
  • Under Voltage Lockout
  • Over Current and Short Circuit Protection
  • 8-bit VID Digital Voltage Programming
  • Remote ON/OFF
  • Load Line Enable/Disable
  • 2-Wire Remote Sense
  • Class II, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592B)
  • Networking
  • Computers and peripherals
  • Telecommunications

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tech.support@psbel.com MODEL NUMBER OUTPUT VOLTAGE INPUT VOLTAGE MAX. OUTPUT CURRENT MAX. OUTPUT POWER TYPICAL EFFICIENCY SRND-90A1A0 0.5 - 1.6 VDC 9 – 13.8 VDC 75 A 120 W 89% S R ND - 90 A 1A 0 Mounting Type RoHS Status Series Name Output Power Input Range Output Voltage Active Logic Surface mount RoHS VRM11.1 series 120 W 9 – 13.8 V 0.5 -1.6 V Active high PARAMETER DESCRIPTION MIN TYP MAX UNITS Continuous non-operating Input Voltage -0.3 - 15 V Remote On/Off -0.3 - 5 V Thermal Performance Operating ambient -5 - 85 C Non-operating ambient -40 - 125 C Altitude - - 2000 m NOTE: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device. All specifications are typical at 25°C unless otherwise stated. PARAMETER DESCRIPTION MIN TYP MAX UNIT Operating Input Voltage 9 12 13.8 V Maximum Continuous Current Vin = 12 V, Vout =1.0 V - - 10 A Input Reflected Ripple Current (rms) With simulated source impedance of 0.9 µH, 5 Hz to 20 MHz. Use 2 * 180 µF/16 V Al-Polymer capacitor and 4*22 µF ceramic. - 5 10 mA Input Reflected Ripple Current (pk-pk) - 20 50 mA Turn-on Voltage Threshold 8 8.2 9 V Turn-off Voltage Threshold 6.5 7.2 7.5 V Input Capacitance 448 - - µF CAUTION: This converter is not internally fused. An input line fuse must be used in application.

+86 755 298 85888 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2021 Bel Power Solutions & Protection BCD.20046_AI All specifications are typical at nominal input, full load at 25°C unless otherwise stated. PARAMETER DESCRIPTION MIN TYP MAX UNIT Output Voltage Set Point Output voltage is controlled by the 8 VID pins. Refer to Intel VRM11.1 VID table for setting output voltage Logic '1' state: use pull-up, not exceeding 5 V Logic '0' state: pull down to ground 0.5 - 1.6 V Line Regulation Low line to high line - ±0.3 - % Load Regulation Pin1 = logic high - 0 - mΩ Pin1 = logic low - 0.8 - mΩ Output Ripple and Noise (Pk-Pk) Vin = 12 V, Io = 75 A, 0 – 20 MHz BW - 12 20 mV Output Ripple and Noise (RMS) - 2 5 mV Transient Response (Load Line Enable) 0% to 50% step Load - - 30 mV 50% to 0% step Load - - 50 mV Transient Response (Load Line Disable) 0% to 50% step Load - - 30 mV 50% to 0% step Load - - 30 mV Output Current Range Thermal Design Current - 75 - A Maximum current (1 sec max) - 93 - A Turn on Time Power-up OR Output enable - - 20 ms Overshoot at Turn on At turn on - - 0.5 % Output Capacitance 1800 - 7500 µF PARAMETER DESCRIPTION MIN TYP MAX UNIT Efficiency Vin = 12 V, Vo = 1 V, Io > 67.5 A 89 - - % Vin = 12 V, Vo = 1 V, 67.5 A > Io > 30 A 87 - - % Vin = 12 V, Vo = 1 V, 30 A > Io > 15 A 83 - - % Switching Frequency Signal phase - 250 - kHz Over Temperature Protection - 125 - C MTBF Io = 80% of Io.max, Ta = 40°C Airflow 400 LFM - 5,701,284 - Hours Over Temperature Hiccup, Non-latching - 125 - C Weight - 33.7 - g Dimensions (L × W × H) 2.09 x 0.675 x 0.87 53.09 x 17.16 x 22.1 inch mm

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Figure 1. Efficiency data Figure 2. Control with open collector/drain circuit Figure 3. Control with photocoupler circuit Figure 4. Control with logic circuit Figure 5. Permanently off

Figure 6. Thermal derating curve

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tech.support@psbel.com VRM11.1 VID CODES HEX Vout HEX Vout HEX Vout HEX Vout (VID7 - VID0) (VDC) (VID7 - VID0) (VDC) (VID7 - VID0) (VDC) (VID7 - VID0) (VDC) 0 0 OFF 3 0 1.31250 6 0 1.01250 9 0 0.71250 0 1 OFF 3 1 1.30625 6 1 1.00625 9 1 0.70625 0 2 1.60000 3 2 1.30000 6 2 1.00000 9 2 0.70000 0 3 1.59375 3 3 1.29375 6 3 0.99375 9 3 0.69375 0 4 1.58750 3 4 1.28750 6 4 0.98750 9 4 0.68750 0 5 1.58125 3 5 1.28125 6 5 0.98125 9 5 0.68125 0 6 1.57500 3 6 1.27500 6 6 0.97500 9 6 0.67500 0 7 1.56875 3 7 1.26875 6 7 0.96875 9 7 0.66875 0 8 1.56250 3 8 1.26250 6 8 0.96250 9 8 0.66250 0 9 1.55625 3 9 1.25625 6 9 0.95625 9 9 0.65625 0 A 1.55000 3 A 1.25000 6 A 0.95000 9 A 0.65000 0 B 1.54375 3 B 1.24375 6 B 0.94375 9 B 0.64375 0 C 1.53750 3 C 1.23750 6 C 0.93750 9 C 0.63750 0 D 1.53125 3 D 1.23125 6 D 0.93125 9 D 0.63125 0 E 1.52500 3 E 1.22500 6 E 0.92500 9 E 0.62500 0 F 1.51875 3 F 1.21875 6 F 0.91875 9 F 0.61875 1 0 1.51250 4 0 1.21250 7 0 0.91250 A 0 0.61250 1 1 1.50625 4 1 1.20625 7 1 0.90625 A 1 0.60625 1 2 1.50000 4 2 1.20000 7 2 0.90000 A 2 0.60000 1 3 1.49375 4 3 1.19375 7 3 0.89375 A 3 0.59375 1 4 1.48750 4 4 1.18750 7 4 0.88750 A 4 0.58750 1 5 1.48125 4 5 1.18125 7 5 0.88125 A 5 0.58125 1 6 1.47500 4 6 1.17500 7 6 0.87500 A 6 0.57500 1 7 1.46875 4 7 1.16875 7 7 0.86875 A 7 0.56875 1 8 1.46250 4 8 1.16250 7 8 0.86250 A 8 0.56250 1 9 1.45625 4 9 1.15625 7 9 0.85625 A 9 0.55625 1 A 1.45000 4 A 1.15000 7 A 0.85000 A A 0.55000 1 B 1.44375 4 B 1.14375 7 B 0.84375 A B 0.54375 1 C 1.43750 4 C 1.13750 7 C 0.83750 A C 0.53750 1 D 1.43125 4 D 1.13125 7 D 0.83125 A D 0.53125 1 E 1.42500 4 E 1.12500 7 E 0.82500 A E 0.52500 1 F 1.41875 4 F 1.11875 7 F 0.81875 A F 0.51875 2 0 1.41250 5 0 1.11250 8 0 0.81250 B 0 0.51250 2 1 1.40625 5 1 1.10625 8 1 0.80625 B 1 0.50625 2 2 1.40000 5 2 1.10000 8 2 0.80000 B 2 0.50000 2 3 1.39375 5 3 1.09375 8 3 0.79375 F E OFF 2 4 1.38750 5 4 1.08750 8 4 0.78750 F F OFF 2 5 1.38125 5 5 1.08125 8 5 0.78125 2 6 1.37500 5 6 1.07500 8 6 0.77500 2 7 1.36875 5 7 1.06875 8 7 0.76875 2 8 1.36250 5 8 1.06250 8 8 0.76250 2 9 1.35625 5 9 1.05625 8 9 0.75625 2 A 1.35000 5 A 1.05000 8 A 0.75000 2 B 1.34375 5 B 1.04375 8 B 0.74375 2 C 1.33750 5 C 1.03750 8 C 0.73750 2 D 1.33125 5 D 1.03125 8 D 0.73125 2 E 1.32500 5 E 1.02500 8 E 0.72500 2 F 1.31875 5 F 1.01875 8 F 0.71875

environment may differ, please thoroughly review these guidelines with your process engineers. Figure 7. Solder information The SRND-90A1A0 modules have a MSL rating of 3. storage environment and handling procedure is detailed in J-STD-033. minimum of 4 hours (preferably 24 hours) before reflow soldering.

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Figure 8. Outline Finish –3 micro inches Gold over 40 micro inches minimum Nickel plating. 2) Un-dimensioned components are shown for visual reference only.

Figure 9. Pins

1 Load Line Disable 16 Vin

2 PSI# 17 Vin

3 VID7 18 PGround

4 VID6 19 PGround

5 VID5 20 PGround

6 VID4 21 Vout

7 VID3 22 Vout

8 VID2 23 Vout

9 VID1 24 PGround

10 VID0 25 PGround

11 IMON 26 Vout

12 Enable 27 Vout

13 Sense + 28 Vout

14 Sense - 29 PGround

15 VR_Ready 30 PGround

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Figure 10. Recommended pad layout

+86 755 298 85888 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2021 Bel Power Solutions & Protection BCD.20046_AI DATE REVISION CHANGES DETAIL APPROVAL 2017-07-20 AA First release J.Yan 2017-10-26 AB Update Load line disable pin logic and Output specs J.Yan 2018-01-12 AC Update MD J.Yan 2018-06-12 AD Update MD J.Yao 2018-08-17 AE Update ABSOLUTE MAXIMUM RATINGS, INPUT SPECIFICATIONS, OUTPUT SPECIFICATIONS and MD J.Yao 2018-09-18 AF Update INPUT SPECIFICATIONS, OUTPUT SPECIFICATIONS J.Yao 2019-05-06 AG Update MTBF, Over temperature, Weight, TD curve J.Yao 2020-07-27 AH Add module photo F.Tao 2021-04-23 AI Add object ID. Remove the G suffix. J.Yao For more information on these products consult: tech.support@psbel.com NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice.