This on board power system controller provides a flexible, cost effective, and high performance solution for controlling, monitoring, and sequencing multiple Point of Load (PoL) converters on a system board. The controller uses a digital signal processor (DSP) engine and Bel’s firmware to implement a portfolio of board level control features typically required in a multiple voltage power system. This device can monitor and control (with active trim) up to eight PoL converters and monitor up to four analog inputs and supports two independent zones. Digital Signal Processor (DSP) Based with Bel Firmware Provides Power Up and Power Down Sequencing Logic Stand Alone or Command Based Fault Detection and Reporting 64-Pin 10mm x 10mm TQFP package I2C, SMBus, or PMBus compatible serial interface options Configurable through serial interface, Customizable through software 3V3 logic levels Voltage set point control and Margining via Closed Loop Trim Analog Input Monitoring Programmed parameters saved in non-volatile memory Intelligent configuration capability Power-down data log for identifying fault conditions Boot loader for in-system upgrading GUI for defining board configuration parameters and board monitoring Data Storage Servers Networking Telecommunications This part is one in a family of the Bel Power System Controllers. Refer to Bel for additional controllers with different capabilities. PART NUMBER NUMBER OF PINS NUMBER OF TRIMMED RAILS NUMBER OF ADDITIONAL MONITORED RAILS NUMBER OF POWER ZONES TRKF-64D84SR 64 8 4 2 TRKF-64D84SR 2 Figure 1 provides a Functional Block Diagram of the Power System Controller. Digital Inputs (from System CPU) /2 /2 Enable (Zone A-B) External Fault (Zone A-B) Reset In Mfg Mode Margin High Margin Low Digital Outputs (to System CPU) /2 Power Good (Zone A-B) Reset Output A Reset Output B External Reference (+/-) /2 Monitor Vin Analog Voltage Monitoring Monitor Analog Voltages (A-D) /4 Digital I/O Control Monitor PoL Vout (1-8) /8 Voltage Attenuation Resistors (if required) PMBus/I2C Communications Trim PoL PWM Output (with System CPU) Clock Data PMBus / I2C Engine Main Engine Active Trim Control Vin /8 Trim PWM Trim Circuit PoL Converters 1 of 8 Internal Flash (board configuration data, fault log) Power System Controller Vout Enable PoL (1-8) /8 Enable GND Sequence Up/Down Control Enable Analog (A-D) /4 PoL Input Power Enable (Zone A-B) /2 Figure 1. Functional Block Diagram A Configuration GUI is used to define the various board specific parameters (such as turn on and turn off input voltage thresholds, output voltage set points and limits, digital I/O logic polarity, and sequencing requirements). See Section 2, Configurable Parameters for a complete list. These parameters are sent to the part and saved in its non-volatile on-board flash memory during the board development or manufacturing processes. tech.support@psbel.com TRKF-64D84SR 3 While in operation, the controller manages the voltage rails as follows: A. Sequence Up Operation The controller performs the power up sequence when the monitored input voltage is greater than the configured turn-on threshold and the enable input is asserted. It goes through each sequence step and enables the desired outputs and delays for the desired amount of time. It then checks that the enabled outputs are within their configured power good limits. If they are, it continues to the next sequence step. If not, it sequences down from this step back to the first. After the sequence up operation completes, it then delays for the configured power good delay value and then asserts the power good output signal. B. Active Trim The part performs an active trim of the PoLs by comparing the measured PoL output voltages with the desired set points and then adjusts the duty cycle of the trim PWMs. This provides for an accurate set point over time and temperature requiring only one precision voltage reference for the entire power system. If margin testing is desired, the set points are set to the configured margin high or low values and the output is trimmed to that value. C. Fault Detection Upper and lower warning and power good limits are defined for each voltage and warning and power good masks are used to indicate which rails cause warning conditions or power good faults. Fault logs containing the running time, voltages, and status flags are stored in non-volatile memory for board diagnosis. D. Sequence Down Operation The controller performs the power down sequence when the monitored input voltage is less than the configured turn-off threshold, the enable input is de-asserted, or if there is a power good fault. It goes through each sequence step from last to the first and disables the outputs. This part supports dual zones which allows for two sets of PoLs to be independently enabled and monitored. The zone assignment is configurable along with the standard board specific configurable parameters. The two zones are sequenced up or down independent of each other. A fault on one zone does not cause the other zone to power down. Zone A The PoLs included in the Zone A sequence mask are sequenced up if Enable Zone A is asserted AND the Zone A input monitor is valid. They are sequenced down if Enable Zone A is de-asserted OR the Zone A input monitor is invalid. The Zone A PoLs are also sequenced down if any of the monitored PoLs or Analog Input voltages in the Zone A power good mask are outside of the power good limits. This will result in a latching fault that can be cleared by toggling the Enable Zone A input or issuing PMBus commands. Zone A power up logic: SIGNAL STATE LOGIC Zone A Enable Asserted AND Zone A input monitor 1 Valid (>Vin Start) 1 The actual analog input used for this monitor function is configurable. After the enable delay, Input Power Enable Zone A is asserted. Next, the PoLs listed in the Zone A sequence masks are sequenced up in the specified order with the specified delays. If the PoL voltages specified in the Zone A power good mask are within the power good limits, the Power Good Zone A output is asserted after the specified power good delay. Zone A power down logic: SIGNAL STATE LOGIC Zone A Enable De-asserted OR Zone A input monitor1 Invalid (< Vin Off) OR Zone A Power Good Mask any monitored voltage outside of power good limits Zone B The PoLs included in the Zone B sequence mask are sequenced up if Enable Zone B is asserted AND Zone B input monitor is valid. They are sequenced down if Enable Zone B is de-asserted OR Zone B input monitor is invalid. The Zone B PoLs are also sequenced Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2016 Bel Power Solutions & Protection BCD.00842_AA Asia-Pacific +86 755 298 85888 TRKF-64D84SR 4 down if any of the monitored PoL or Analog Input voltages in the Zone B power good mask are outside of the power good limits. This will result in a latching fault that can be cleared by toggling the Enable Zone B input or issuing PMBus commands. Zone B power up logic: SIGNAL STATE LOGIC Enable Zone B Asserted AND Zone B input monitor 1 Valid (>Vin Start) After the enable delay, Input Power Enable Zone B is asserted. Next, the PoLs listed in the Zone B sequence masks are sequenced up in the specified order with the specified delays. If the PoL voltages specified in the Zone B power good mask are within the power good limits, the Power Good Zone B output is asserted after the specified delay. Zone B power down logic: SIGNAL STATE LOGIC Enable Zone B De-asserted OR Invalid (< Vin Off) OR Zone B input monitor 1 any monitored voltage outside of power good limits Zone B Power Good Mask Note that a sequence up operation for a zone will complete before starting the sequence up operation of the other zone if the enabling condition of the other zone occurs while the first zone is still sequencing up. Zone A is sequenced up first if the enabling conditions occur simultaneously. The Bel Configurator is a PC-based graphical user interface application that is used to define the various board parameters. This application is used to program the board settings into the part and may also be used interface with the part for board development or diagnosis. CATEGORY Operating Settings PoL and Analog Voltage Monitor Delay and Sequences Power Good and Warning1 Reset Outputs2 Digital Inputs Digital Outputs Notes: 1. 2. PARAMETERS I2C slave address ADC external reference voltage Trim PWM frequency Input voltage monitor attenuation resistor values Zone input source Turn-on voltage thresholds Turn-off voltage thresholds Input over voltage thresholds Voltage monitor attenuation resistor values Voltage set points Margin percentages (low/high) Warning limit percentages (low/high) Power good limit percentages (low/high) Default PWM duty cycle PoL trim logic Sequence enable masks (8 steps for each zone) Sequence delays (9 values for each zone) Power good mask (each zone) Power good delay (each zone) Warning mask (each zone) Warning delay (each zone) Reset A mask Reset A delay Reset B mask Reset B delay Input polarity (active high/low) Output polarity (active high/low) Output open drain option The Warning indication is a flag only, there is no digital output signal. The Reset Output signals are not defined by zone, but the masks may be defined so that the signals are controlled by rails enabled by a particular zone. tech.support@psbel.com TRKF-64D84SR 5 I/O TYPE QUANTITY Analog Input 13 SIGNALS Digital Input 8 Monitor PoLs (8), Monitor Analogs (4), Monitor Vin External Fault Inputs (2), Zone Enables (2), Mfg Mode, Margin High, Margin Low, Reset In Digital Output 18 Enable PoLs (8), Enable Analogs (4), Input Power Enables (2), Power Good (2), Reset Outputs (2) External Reference 2 VREF-, VREF+ I2C Communications1 2 I2C Data, I2C Clock Power 10 VDD, VSS, AVDD, AVSS, VCAP/VDDCORE Programming2 3 /MCLR, ICSP Data, ICSP Clock PWM Trim 8 Trim PoLs (8) Notes: Notes: 1. 2. PIN NO. The I2C communication signals (I2C Clock, I2C Data, VDD, and VSS) must be brought to an interface header to initially load the board specific configuration data and optionally communicate with the device during board development. These signals may also be connected to a host microprocessor for system integration. It is suggested that the /MCLR, VDD, VSS, ICSP Data, and ICSP Clock signals be brought to a programming header on the board in case it becomes necessary to reprogram the part using an in-circuit serial programmer. SIGNAL DESCRIPTION I/O TYPE OR FUNCTION 1 Enable PoL 7 Digital Output 5V TOLERANT N 2 Enable PoL 8 Digital Output N 3 External Fault Zone A Digital Input N 4 Input Power Enable Zone A Digital Output Y 5 Margin Low Digital Input Y 6 Margin High Digital Input Y 7 /MCLR Programming Y 8 Enable Zone B Digital Input Y 9 VSS Power N 10 VDD Power N 11 Monitor PoL 4 Analog Input N 12 Monitor PoL 3 Analog Input N 13 Monitor PoL 2 Analog Input N 14 Monitor PoL 1 Analog Input N 15 VREF- External Reference N 16 VREF+ External Reference N 17 Monitor PoL 5 Analog Input N 18 Monitor PoL 6 Analog Input N 19 AVDD Power N 20 AVSS Power N 21 Monitor PoL 7 Analog Input N 22 Monitor PoL 8 Analog Input N 23 Enable Zone A Digital Input N 24 Monitor Analog A Analog Input N 25 VSS Power N 26 VDD Power N 27 Monitor Analog B Analog Input N 28 Monitor Vin Analog Input N 29 Monitor Analog C Analog Input N 30 Monitor Analog D Analog Input N 31 Enable Analog D Digital Output Y Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2016 Bel Power Solutions & Protection BCD.00842_AA Asia-Pacific +86 755 298 85888 TRKF-64D84SR 6 PIN NO. SIGNAL DESCRIPTION I/O TYPE OR FUNCTION 32 External Fault Zone B Digital Input 5V TOLERANT Y 33 Enable Analog C Digital Output Y 34 Enable Analog B Digital Output Y 35 Reset Output B Digital Output Y 36 I2C Data I2C Communication Y 37 I2C Clock I2C Communication Y 38 VDD Power N 39 Power Good Zone A Digital Output N 40 Enable PoL 1 Digital Output N 41 VSS Power N 42 Power Good Zone B Digital Output Y 43 Mfg Mode Digital Input Y 44 Reset Output A Digital Output Y 45 Reset In Digital Input Y 46 Trim PoL 1 PWM Trim Y 47 ICSP Data Programming N 48 ICSP Clock Programming N 49 Trim PoL 2 PWM Trim Y 50 Trim PoL 3 PWM Trim Y 51 Trim PoL 4 PWM Trim Y 52 Trim PoL 5 PWM Trim Y 53 Trim PoL 6 PWM Trim Y 54 Trim PoL 7 PWM Trim Y 55 Trim PoL 8 PWM Trim Y 56 VCAP/VDDCORE Power N 57 VDD Power N 58 Input Power Enable Zone B Digital Output Y 59 Enable Analog A Digital Output Y 60 Enable PoL 2 Digital Output N 61 Enable PoL 3 Digital Output N 62 Enable PoL 4 Digital Output N 63 Enable PoL 5 Digital Output N 64 Enable PoL 6 Digital Output N The voltage on 5V tolerant digital input pins can exceed VDD as indicated in the Absolute Maximum Ratings section. 5V tolerant digital output pins can be configured with the open-drain feature which allows the generation of outputs higher than VDD by using external pull-up resistors. The maximum open-drain voltage allowed is the same as the maximum VIH specification defined in the Electrical Specifications. SIGNAL TYPE AVDD Power AVSS Power Enable (Zone A, Zone B) Digital Input Enable Analog (A-D) Digital Output Enable PoLs (1-8) Digital Output External Fault (Zone A, Zone B) Digital Input DEFINITION Positive supply (filtered VDD) for powering the ICs analog circuitry. See Section 6, Powering the Controller. Analog ground reference. See Section 6, Powering the Controller. When asserted and if the input voltage is above the turn on threshold, the board is sequenced up. When de-asserted, the board is sequenced down. This function can be overridden as defined in the separate interface document. Optional enable signals if Analog A-D are controlled converters, such as LDOs, VRMs, or PoLs that do not require active trim or margining. Asserted during sequence up and deasserted during sequence down. Enable signal for the PoL converters. Asserted during sequence up and de-asserted during sequence down. Optional input to induce a fault to the indicated zone. For example, this signal may be used for indicating a thermal trip event. When asserted, the zone will fault off. If not used, this pin must be pulled to ground and configured as active high. tech.support@psbel.com TRKF-64D84SR 7 I2C Clock I2C Communications I2C Data I2C Communications Synchronous serial clock input/output for I2C communication. Since this is an I2C slave device, the master drives the clock. Clock stretching may occur if necessary according to the I2C specification. Synchronous serial bi-directional data line for I2C communication. ICSP Clock Programming Clock input pin for in-circuit serial programming. ICSP Data Programming Input Power Enable (Zone A, Zone B) Digital Output Margin High Digital Input Margin Low Digital Input /MCLR Programming Mfg Mode Digital Input Monitor Analog (A-D) Analog Input Monitor PoLs (1-8) Analog Input Monitor Vin Analog Input Power Good (Zones A, Zone B) Digital Output Reset Input Digital Input Reset Outputs (A, B) Digital Output Trim PoLs (1-8) PWM Trim VCAP/VDDCORE Power VDD Power VREF- External Reference Data I/O pin for in-circuit serial programming. These signals are the enable signals for the optional power input circuit that is used to power the PoL converters. Asserted during sequence up and de-asserted during sequence down. If an OVP fault is detected (any monitored output voltage is greater than the power good upper limit), the Input Power Enable output is de-asserted first at power down. If no OVP fault occurs, the Input Power Enable output is de-asserted last at power down. When asserted (and if the Mfg Mode input is also asserted), then the PoLs will be margined to their configured high margin values. When asserted (and if the Mfg Mode input is also asserted), then the PoLs will be margined to their configured low margin values. Master Clear (Reset) input. This pin is an active-low reset to the device. This signal must be pulled-up to VDD with a 10k resistor. Enable signal for the hardware margin signals. When asserted, the margin high/low inputs will cause the PoLs to be margined to their configured high/low margin values. Voltage monitor of Analog A-D inputs (must be scaled using attenuating resistors if voltage exceeds reference voltage). PoL output voltage monitor (must be scaled using attenuating resistors if voltage exceeds reference voltage). System input voltage monitor (must be scaled using attenuating resistors if voltage exceeds reference voltage). Asserted after the configured power good delay after all of the outputs have been sequenced up and are operating within their configured power good limits. De-asserted prior to sequencing down due to a fault or commanded to do so. When asserted, causes Reset outputs to assert. Asserted when Reset In is asserted. De-asserted when any outputs in configured reset masks are outside of power good limits. Reset outputs can also be controlled by PMBus commands. PWM outputs for actively trimming the analog PoLs to their desired set points. See Section 7, Using the PWM Trim Outputs. Core decoupling capacitor. See Section 6, Powering the Controller. Positive supply (3.3V) for peripheral logic and I/O pins. See Section 6, Powering the Controller. ADC voltage reference (low) input. VREF+ External Reference ADC voltage reference (high) input. VSS Power Ground reference for logic and I/O pins. See Section 6, Powering the Controller. Any unused digital inputs should be pulled to ground (VSS) with a 10k resistor. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2016 Bel Power Solutions & Protection BCD.00842_AA Asia-Pacific +86 755 298 85888 TRKF-64D84SR 8 Figure 2. Power Interface Figure 2 is a schematic of the typical 3.3V VDD interface to the Power System Controller IC using a Microchip LDO, P/N MCP1702T3302I/MB. This device is in a SOT89 package and in most applications will be sufficient in size to handle the power dissipation when powering the circuit from a 12V source. Capacitor C7 (0.1uF ceramic) is one of the decoupling capacitors and should be located directly across each pair of VDD and VSS pins on the IC. The part has a VCAP/VDD CORE pin which is used to decouple the internally generated core voltage. Capacitor C8 is the decoupling capacitor for the core. This decoupling capacitor should be a low ESR ceramic or tantalum capacitor with a value of 4.7 to 10uF. Capacitor C6 is the decoupling capacitor for the analog VDD (AVDD) and it should be located directly across the AVDD and AVSS pins on the IC. Resistor R2 in combination with C6 provides a filter for the analog VDD. Resistor R3 is intended to separate AVSS from VSS. Capacitor C2 is the input decoupling capacitor for the LDO and it should be connected directly across the LDO’s input and ground pins. Capacitor C1 is used as a hold up capacitor. Its purpose is to hold up the supply voltage to the LDO and maintain a stable VDD for the DSP for a short period after the +12Vin source is removed. The Schottky diode D1 prevents C1 from being discharged after +12Vin is removed. Resistor R1 is used to protect D1 during the inrush event associated with the application of the +12Vin. The single pulse peak current rating for a typical BAT54 diode is approximately 600mA. If the rise time of the +12V source is slow enough to limit the peak charging current into C1 it is possible to eliminate R1. Assuming a 40mA current draw, C1 will provide approximately 188us of hold up time per uF of capacitance. The 3.0V reference IC provides an accurate external voltage reference for the analog-to-digital converter. tech.support@psbel.com TRKF-64D84SR 9 The diagrams in Figure 3 show the three most common trim methods used in PoL converters. In all of these schemes a power conversion stage contains a PWM device that receives a control voltage from an error amplifier. The error amplifier (E/A) compares a scaled version of the output voltage to a reference. The output voltage of the converter module is simply the reciprocal of the scaling factor multiplied by the reference value. The output voltage can be adjusted by changing this scaling factor (Figure 3A) or by modifying the reference (Figures 3B and 3C). +Sense +Vin Zf Ry TRIM - Zi Rx +Vout Rz PWM E/A + Reference Figure 3A +Sense +Vin Zf - Zi +Vout PWM E/A + TRIM Rx Ry Reference Figure 3B +Sense +Vin Zf - Zi +Vout E/A Reference TRIM PWM + uController or Equivalent Figure 3C Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2016 Bel Power Solutions & Protection BCD.00842_AA Asia-Pacific +86 755 298 85888 TRKF-64D84SR 10 The most common trim method is shown in Figure 3A. The popularity of this method stems from the fact that most highly integrated PWM control IC’s have an internal reference that is not accessible and cannot be controlled externally. In this scheme the output is scaled by adding a resistor from the trim pin to ground. This modifies the feedback divider and moves the output voltage to a higher value. The output can also be modified by superimposing an offset voltage on the feedback divider by connecting a voltage source to the trim pin through a resistor. Either of these two approaches will move the output voltage to a new value. The common characteristic of modules with this trim scheme is that a lower value trim resistor to ground will cause a higher output voltage or a larger voltage superimposed on the trim pin will cause Vout to decrease. Some PoL converters incorporate the trim scheme shown in Figure 3B. With this method the feedback ratio is kept constant and the reference value is modified to move the output voltage. The common characteristic of modules with this trim scheme is that a lower value trim resistor to ground will cause a lower output voltage and a larger voltage superimposed on the trim pin will cause Vout to increase. The method shown in Figure 3C is occasionally used. This is similar to the method in Figure 3B except the modification of the reference is mapped through a device such as a microcontroller. This is the least common of the three methods and requires the vendor’s data sheet to determine the trim characteristic because the microcontroller can map the reference in many different ways. The power controller has the ability to do independent closed loop trim and closed loop margining of the output voltage for each PoL controlled by the device. Each PoL’s output voltage is monitored and by an analog to digital converter (ADC) in a continuous loop. In firmware the most recent measured output voltage is compared against the desired value and the PoL’s output is adjusted by delivering a trim value to the corresponding PoL’s trim pin. This trim voltage is created from a digital PWM output and an external low pass filter. Each digital PWM is labeled <PoL “n” Trim> where n indicates a specific converter which corresponds to the monitoring channel labeled with the same “n” value. The external low pass filter creates a DC value from the PWM signal which is then delivered to each PoL converter through a range limiting resistor. Figure 4 shows a typical circuit used to interface the controller’s trim PWM signals to PoL converters. In this circuit, Ra and Ca construct a low pass filter while Rb is used to limit the trim range. The effective trim voltage is equal to the PWM duty cycle multiplied by VDD (3.3V) and is controllable in 1024 steps from 0 to VDD. The effective trim resistor value is equal to Ra + Rb. Ra and Ca are chosen to reduce the trim voltage ripple. Typical values for Ra and Ca are 1k for Ra and 0.22uF to 1uF for Ca. Rb is used to limit the control range and should be selected based on the desired control range and the trim equation for the PoL. This trim equation is usually available from the PoL manufactures data sheet. The trim direction or logic is configurable for each PoL. The accuracy of the active trim is a function of the ADC accuracy which is mostly controlled by the accuracy of the applied reference to the Vref pins. The Trim PoL PWMs are set to the configured default values before power up begins so that the trim voltage is stable before the PoLs are enabled. Figure 4 The internal ADC channels are converted as 12-bit results with full scale equal to a chosen reference. The device is intended to be powered from a 3V3 source and can be configured to use this source as the ADC reference or to use an externally provided reference. Closed loop margining and set point adjustments always use the entire 12-bit result to trim the output voltages to configured values. Monitored voltages are reported via I2C communication using PMBus data formats as defined in the separate communication manual. The voltage range reported is determined by the entered set points. Any of the monitored voltages that are greater than the ADC reference or that can be margined above this reference are required to have a voltage divider to limit the maximum input to the corresponding ADC channel to a value less than or equal to the ADC reference. Monitored voltages below the chosen ADC reference do not require this voltage divider. A four sample moving average is used to filter the ADC results. In most cases this will eliminate the need for external filtering. The input voltage (Vin) monitoring channel requires a voltage divider so that Vin maximum is scaled to a value less than the maximum value of the ADC reference. tech.support@psbel.com TRKF-64D84SR 11 The three primary control interface signals to the attached PoL converters are an enable signal, a voltage monitoring signal, and trim control signal. The enable signals are labeled <Enable PoL “n”>, the Monitoring signals are labeled <Monitor PoL “n”>, and the trim signals are labeled <Trim PoL “n”>. Each n’th PoL converter is required to use the corresponding enable, monitor, and trim signals. For example the first PoL converter attached to the controller is PoL 1. PoL 1 should use Enable PoL 1, Monitor PoL 1, and Trim PoL 1. The firmware assumes that the connections are made this way when controlling the system. Serial communication is achieved via an I2C bus. The communication protocol is derived from the PMBus command set and is defined in a separate communications manual. The communications manual also defines the protocol for device programming via embedded boot loader software. The parameters and voltage readings for each PoL converter or analog input can be accessed using PMBus page mode as described in the communications manual. The page assignment is defined in Figure 5. Page 0 Not Used Page 1 PoL1 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads Page 2 PoL 2 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads Page3 PoL 3 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads I2C Address (configurable) Page 4 PoL 4 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads I2C Bus Communication Engine Page Control Page 5 PoL 5 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads Page 6 PoL 6 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads Page 7 PoL 7 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads Page 8 PoL 8 Set Point Scaling Margin Limits PGD/Warning Limits Voltage Reads Page_9 Analog A No Set Point Control Scaling PGD/Warning Limits Voltage Reads Page_10 Analog B No Set Point Control Scaling PGD/Warning Limits Voltage Reads Page_11 Analog C No Set Point Control Scaling PGD/Warning Limits Voltage Reads Page 12 Analog D No Set Point Control Scaling PGD/Warning Limits Voltage Reads Figure 5. Page Assignment Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2016 Bel Power Solutions & Protection BCD.00842_AA Asia-Pacific +86 755 298 85888 TRKF-64D84SR 12 PARAMETER MIN MAX UNITS Ambient temperature under bias -40 TYP 85 °C Storage temperature -65 150 °C Voltage on VDD with respect to VSS -0.3 4.0 V Voltage on any pin that is not 5V tolerant with respect to VSS -0.3 VDD+0.3 V Voltage on any 5V tolerant pin with respect to VSS when VDD ≥ 3.0V -0.3 5.6 V Voltage on any 5V tolerant pin with respect to VSS when VDD < 3.0V -0.3 3.6 V Voltage on VDDCORE with respect to VSS 2.25 2.75 V Maximum current out of VSS pin 300 mA Maximum current into VDD pin 250 mA 4 mA Maximum output current sunk by any I/O pin Maximum output current sourced by any I/O pin 4 mA Maximum current sunk by all ports 200 mA Maximum current sourced by all ports 200 mA PARAMETER Input Voltage Range SYMBOL NOTES VDD Input Current IDD Logic Low Input Level VIL Logic High Input Level VIH MIN TYP MAX UNITS 3.0 3.30 3.6 VDC 46 55 mA 0.2*VDD VDC Typical is at 3.3V, 25C, 20 MIPS. Max is at 3.3V, 85C, 20 MIPS VSS Non 5V tolerant pins VDD 0.7*VDD VDC 5V tolerant pins 5.5 Logic Low Output Level VOL VDD = 3.3V Logic High Output Level VOH VDD = 3.3V, IOH = -3.0mA 2.4 VDD Rise Rate SVDD 0 to 3V in 100ms 0.03 Capacitance I/O Pin to GND 0.4 V/ms 50 CB PWM Series Resistor RPWM Margin PWM Frequency FPWM Reference Input VREF AVSS + 1.7 EP 10,000 Flash Memory Cell Endurance VDC CIO I2C Bus Capacitance SCL and SDA External Series Resistor VDC 400 1 pF pF k 15 kHz AVDD VDC E/W cycles tech.support@psbel.com TRKF-64D84SR 13 Figure 6. Bel 64-pin 10x10x1mm TQFP Controller Number of Leads Lead Pitch Overall Height Molded Package Thickness Standoff Foot Length Footprint Foot Angle Overall Width Overall Length Molded Package Width Molded Package Length Lead Thickness Lead Width Mold Draft Angle Top Mold Draft Angle Bottom 64-LEAD PLASTIC THIN-QUAD FLATPACK, 10 x 10 x 1 MM BODY DIMENSION MIN NOM N 64 e 0.50 BSC A A2 0.95 1.00 A1 0.05 L 0.45 0.60 L1 1.00 REF 0˚ 3.5˚ E 12.00 BSC D 12.00 BSC E1 10.00 BSC D1 10.00 BSC c 0.09 b 0.17 0.22 11˚ 12˚ 11˚ 12˚ MAX 1.20 1.05 0.15 0.75 7˚ 0.20 0.27 13˚ 13˚ Notes: All dimensional units are in millimeters unless otherwise specified. 1. Pin 1 visual index feature may vary, but must be located within the hatched area. 2. Champers at corners are optional; size may vary. 3. Dimensions D1 and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.25 mm per side. 4. Dimensioning and tolerancing per ASME Y14.5M. BSC: Basic Dimension. Theoretically exact value shown without tolerances. REF: Reference Dimension, usually without tolerance, for information purposes only. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2016 Bel Power Solutions & Protection BCD.00842_AA Asia-Pacific +86 755 298 85888 TRKF-64D84SR 14 DATE REVISION 2016-06-15 AA CHANGE DETAIL First release. Refer to the errata document for additional information specific to each code release. 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. tech.support@psbel.com