MP5098GDT-P

MP5098 12V/5V, Low IQ, Dual-Channel E-Fuse with Current Monitoring and Low On Resistance DESCRIPTION FEATURES The MP5098 is a 12V/5V, low quiescent current (IQ), low on resistance (RDS(ON)), dual-channel efuse protection device with current monitoring. It protects output circuitry from input transients, as well as protects input circuitry from output shorts and transients. • • • At start-up, the inrush current is limited by limiting the output slew rate. The slew rate is controlled via the SS pin capacitor (CSS). The maximum load current (ILOAD_MAX) at the output is current-limited. The magnitude of the current limit (ILIMIIT) is fixed internally. Full protection features include output overvoltage protection (OVP), over-current protection (OCP), short-circuit protection (SCP), and thermal shutdown. The output voltage (VOUT) is limited by output OVP. Each rail’s output current (IOUT) can be monitored via a resistor connected between the IMON1 and IMON2 pins. The MP5098 is available in a space-saving TQFN-10 (2mmx3mm) package. • • • • • • • • • • 12V/5V Integrated Dual E-Fuse Dual-Channel Current Limiting 24V/100ms Maximum Surge Input Voltage (VIN) Tolerance for 12V Bus and 5V Bus 40mΩ Low On Resistance (RDS(ON)) Low Quiescent Current (IQ): o 210µA IQ for 12V Bus o 190µA IQ for 15V Bus Configurable Soft-Start Time (tSS) Fixed Trip/Hold Current Limit (ILIMIIT): o Fixed 4A Trip ILIMIIT for 12V Bus o Fixed 2.5A Hold ILIMIIT for 12V Bus o Fixed 3A Trip ILIMIIT for 5V Bus o Fixed 1.3A Hold ILIMIIT for 5V Bus 15V Over-Voltage Protection (OVP) Threshold for 12V VIN Channel 5.7V OVP Threshold for 5V VIN Channel Over-Current Protection (OCP) with Hiccup Mode Short-Circuit Protection (SCP) Thermal Shutdown (Latch-Off Protection) Available in a TQFN-10 (2mmx3mm) Package APPLICATIONS • • • Hard-Disk Drives (HDDs) Solid-State Drives (SSDs) Hot Swap Applications All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 1 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL APPLICATION VIN1 = 10.8V to 13.2V VOUT1 = VIN1 VOUT1 VIN1 CIN1 10µF CSS1 100nF VIN2 = 4.5V to 5.5V COUT1 10µF SS1 VOUT2 = VIN2 COUT1 10µF MP5098 CIN2 10µF CSS2 100nF VOUT2 VIN2 SS2 IMON1 R1 20k ON OFF EN IMON2 R2 20k GND MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING ORDERING INFORMATION Part Number* MP5098GDT Package TQFN-10 (2mm×3mm) Top Marking See Below MSL Rating 1 * For Tape & Reel, add suffix -Z (e.g. MP5098GDT-Z). TOP MARKING BLB: Product code of MP5098GDT Y: Year code WW: Week code LLL: Lot number PACKAGE REFERENCE TOP VIEW VIN1 VOUT1 10 9 EN 1 8 SS1 IMON1 2 7 SS2 GND 3 6 4 IMON2 5 VIN2 VOUT2 TQFN-10 (2mmx3mm) MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 3 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING PIN FUNCTIONS Pin # Name 1 EN 2 IMON1 3 GND 4 VIN2 5 VOUT2 6 IMON2 7 SS2 8 SS1 9 VOUT1 10 VIN1 Description Channel 1 and channel 2 enable. The EN pin is a digital input that turns the regulator on and off. Float EN or pull EN low to turn the regulator on; pull EN high to turn it off. Channel 1 current monitoring. Connect a resistor between the IMON1 and GND pins to set the current monitor gain. System ground. Channel 2 supply voltage. Channel 2’s typical input voltage (VIN) is 5V. Use a ceramic decoupling capacitor to decouple the VIN2 pin. Connect VIN2 using a wide PCB trace. Channel 2 output terminal. Channel 2 current monitoring. Connect a resistor between the IMON2 and GND pins to set the current monitor gain. Channel 2 soft start. Connect a capacitor between the SS2 and GND pins to set channel 2’s soft-start time (tSS). Channel 1 soft start. Connect a capacitor between the SS1 and GND pins to set channel 1’s tSS. Channel 1 output terminal. Channel 1 supply voltage. Channel 2’s typical input voltage (VIN) is 12V. Use a ceramic decoupling capacitor to decouple the VIN1 pin. Connect VIN1 using a wide PCB trace. θJA θJC ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance VIN1, VOUT1 .................................... -0.3V to +22V Input positive transient (CH1 = 100ms) ........24V VIN2, VOUT2 .................................... -0.3V to +15V Input positive transient (CH2 = 100ms) ........24V All other pins .................................. -0.3V to +5V Junction temperature ............... -40°C to +150°C Lead temperature .................................... 260°C Continuous Power Dissipation (TA = 25°C) (2)(4) TQFN-10 (2mmx3mm) ...............................3.1W TQFN-10 (2mmx3mm) EV5098-D-00A (4) ................... 40 ....... 4 .... °C/W JESD51-7 (5) ........................... 70 ....... 5 .... °C/W ESD Ratings Human body model (HBM) ......................2000V Charged device model (CDM)..................1750V Recommended Operating Conditions (3) CH1 continuous voltage ............. 10.8V to 13.8V CH2 continuous voltage ................. 4.6V to 5.5V Operating junction temp (TJ) .... -40°C to +125°C MP5098 Rev. 1.0 11/2/2021 Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX) - TA) / θJA. Exceeding the maximum allowable power dissipation can produce an excessive die temperature, which may cause the regulator to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on the EV5098-D-00A, 2-layer PCB, 54mmx46mm. 5) The value of θJA given in this table is only valid for comparison with other packages and cannot be used for design purposes. These values were calculated in accordance with JESD51-7, and simulated on a specified JEDEC board. They do not represent the performance obtained in an actual application. MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 4 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING ELECTRICAL CHARACTERISTICS VIN1 = 12V, VIN2 = 5V, COUT1 = COUT2 = 10µF, TJ = -40°C to +125°C (6), typical values are tested at TJ = 25°C, unless otherwise noted. Parameter Supply Current Symbol Condition Min Typ Max Units IQ_CH1 V EN is low 210 μA IQ_CH2 V EN is low 190 μA ISD_CH1 V EN is high 15 μA ISD_CH2 V EN is high 10 μA Quiescent current Shutdown current Power MOSFET RDS(ON)_CH1 On resistance RDS(ON)_CH2 TJ = 25°C TJ = 125°C TJ = 25°C TJ = 125°C From V tEN_DELAY_CH1 Start-up delay EN 40 40 EN 100mA, with 1A load resistor, SS2 is floating Under-Voltage Lockout (UVLO) Protection and Over-Voltage Protection (OVP) VUVLO_RISING _CH1 VUVLO_ RISING _CH2 Output OVP response time (7) V 4.25 4.35 4.45 V VUVLO_ FALLING Current Limit (ILIMIIT) ILIMIIT during normal operation Constant-current limit during normal operation ILIMIIT response time (7) Secondary ILIMIIT (7) VOVP_CH1 VOVP_CH2 tOVP_CH2 ILIMIT _CH1 ILIMIT_CH2 ILIMIT_CC_CH1 (7) ILIMIT_CC_CH2 (7) tCL_CH1 tCL_CH2 ILIMIT_SEC_CC_ CH1 ILIMIT_SEC_CC_ CH2 MP5098 Rev. 1.0 11/2/2021 μs 10.4 CH1 tOVP_CH1 220 10 _CH2 Output OVP threshold μs 9.6 VUVLO_FALLING_ UVLO falling threshold 220 is low to IOUT2 rises up to tEN_DELAY_CH2 UVLO rising threshold mΩ mΩ mΩ mΩ is low to IOUT1 rises up to 100mA, with 1A load resistor, SS1 is floating From V 50 65 50 65 13.8 5.5 COUT1 = 10µF with 30Ω load resistor, VIN1 = 12V to 18V/10µs COUT2 = 10µF with 10Ω load resistor, VIN2 = 5V to 7V/10µs -10% -10% 9.1 V 2.65 V 15 5.7 16 5.9 V V 2 μs 2 μs 4 3 2.5 1.3 15 15 +10% +10% A A A A μs μs 8 A 8 A MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 5 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING ELECTRICAL CHARACTERISTICS (continued) VIN1 = 12V, VIN2 = 5V, COUT1 = COUT2 = 10µF, TJ = -40°C to +125°C TJ = 25°C, unless otherwise noted. Parameter Symbol tON_HICCUP Hiccup mode on time tOFF_HICCUP Hiccup mode off time Current Monitoring (IMON1/IMON2) GIMON1 Current-sense gain GIMON2 IOFFSET_CH1 Current-sense offset IOFFSET_CH2 Current monitor voltage VIMON range (7) Enable (EN) Control EN falling threshold EN hysteresis EN pull down Condition VEN_FALLING (6) , typical values are tested at Min 0.45 0.8 Typ 2 200 32 34 2 2.3 0 0.95 1.15 Max Units ms ms 3.5 3.8 µA/A µA/A µA µA 2.5 V 1.35 V VEN_HYS 800 mV REN_PD 0.77 MΩ resistance Soft Start (SS) Soft-start current Thermal Shutdown Thermal shutdown (7) ISS_CH1 ISS_CH2 TSD 4 4 5.5 5.5 155 7 7 μA μA °C Notes: 6) Guaranteed by over-temperature correlation. Not tested in production. 7) Guaranteed by engineering sample characterization. MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 6 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL CHARACTERISTICS VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. 250 240 230 220 210 200 190 180 170 160 Quiescent Current vs. Input Voltage 12V e-fuse QUIESCENT CURRENT (µA) QUIESCENT CURRENT (µA) Quiescent Current vs. Input Voltage 240 5V e-fuse 220 200 180 160 140 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 INPUT VOLTAGE (V) 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5 INPUT VOLTAGE (V) Shutdown Current vs. Input Voltage 24 12V e-fuse 22 20 18 16 14 12 10 8 6 4 2 0 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 INPUT VOLTAGE (V) SHUTDOWN CURRENT (µA) SHUTDOWN CURRENT (µA) Shutdown Current vs. Input Voltage 20 5V e-fuse 18 16 14 12 10 8 6 4 2 0 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5 INPUT VOLTAGE (V) Soft-Start Time vs. Soft-Start Capacitance 180 Soft-Start Time vs. Soft-Start Capacitance 12V e-fuse 180 160 140 SOFT-START TIME (ms) SOFT-START TIME (ms) 160 5V e-fuse 120 100 80 60 40 20 0 0 100 200 300 400 500 600 700 800 900 1000 SOFT-START CAPACITANCE (nF) 140 120 100 80 60 40 20 0 0 100 200 300 400 500 600 700 800 900 1000 SOFT-START CAPACITANCE (nF) MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 7 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL CHARACTERISTICS (continued) VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. 10.8 10.6 10.4 10.2 10 9.8 9.6 9.4 9.2 9 8.8 8.6 8.4 8.2 VIN UVLO Threshold vs. Temperature 12V e-fuse UVLO Rising UVLO Falling VIN UVLO THRESHOLD (V) VIN UVLO THRESHOLD (V) VIN UVLO Threshold vs. Temperature -40 -25 -10 5 20 35 50 65 80 95 110125 TEMPERATURE ( C) 5V e-fuse 5 4.8 4.6 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 UVLO Rising UVLO Falling -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE ( C) 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 EN UVLO Threshold vs. Temperature 5V e-fuse 12V e-fuse UVLO Rising UVLO Falling -40 -25 -10 5 EN UVLO THRESHOLD (V) EN UVLO THRESHOLD (V) EN UVLO Threshold vs. Temperature 20 35 50 65 80 95 110 125 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Current Limit vs. Input Voltage Current Limit vs. Input Voltage CURRENT LIMIT (A) CURRENT LIMIT (A) 12V e-fuse 7 6 5 4 3 2 1 0 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 INPUT VOLTAGE (V) MP5098 Rev. 1.0 11/2/2021 UVLO Falling -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE ( C) TEMPERATURE ( C) 8 UVLO Rising 3.5 3.4 3.3 3.2 3.1 3 2.9 2.8 2.7 2.6 2.5 5V e-fuse 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5 INPUT VOLTAGE (V) MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 8 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL CHARACTERISTICS (continued) VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. Current Limit vs. Temperature Current Limit vs. Temperature 12V e-fuse 4 4.5 4 3.5 3 5V e-fuse 3.5 CURRENT LIMIT (A) CURRENT LIMIT (A) 5 3 2.5 2 1.5 1 2.5 0.5 0 2 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE ( C) -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE ( C) IMON Voltage vs. Ouput Current IMON Voltage vs. Ouput Current 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 IMON VOLTAGE (V) IMON VOLTAGE (V) RIMON1 = 20kΩ, 12V e-fuse 0 MP5098 Rev. 1.0 11/2/2021 0.5 1 1.5 2 2.5 OUTPUT CURRENT (A) 3 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 RIMON2 = 20kΩ, 5V e-fuse 0 0.5 1 1.5 2 OUTPUT CURRENT (A) MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2.5 9 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL PERFORMANCE CHARACTERISTICS VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. CH1/CH2 Start-Up through EN CH1/CH2 Start-Up through EN IOUT1 = IOUT2 = 0A IOUT1 = 3A, IOUT2 = 2A REF1: VEN REF1: VEN CH2: VOUT1 CH2: VOUT1 CH1: VOUT2 CH1: VOUT2 CH3: IOUT1 CH3: IOUT1 CH4: IOUT2 CH4: IOUT2 CH1/CH2 Shutdown through EN CH1/CH2 Shutdown through EN IOUT1 = IOUT2 = 0A IOUT1 = 3A, IOUT2 = 2A REF1: VEN REF1: VEN CH2: VOUT1 CH2: VOUT1 CH1: VOUT2 CH1: VOUT2 CH3: IOUT1 CH3: IOUT1 CH4: IOUT2 CH4: IOUT2 Start-Up through VIN1 Shutdown through VIN1 12V e-fuse, no load 12V e-fuse, no load CH1: VOUT1 CH1: VOUT1 CH2: VIN1 CH2: VIN1 CH3: VIMON1 CH3: VIMON1 CH4: IOUT1 CH4: IOUT1 MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 10 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. Start-Up through VIN1 Shutdown through VIN1 12V e-fuse, 3A load 12V e-fuse, 3A load CH1: VOUT1 CH1: VOUT1 CH2: VIN1 CH2: VIN1 CH3: VIMON1 CH3: VIMON1 CH4: IOUT1 CH4: IOUT1 Start-Up through VIN2 Shutdown through VIN2 5V e-fuse, no load 5V e-fuse, no load CH1: VOUT2 CH1: VOUT2 CH2: VIN2 CH2: VIN2 CH3: VIMON2 CH3: VIMON2 CH4: IOUT2 CH4: IOUT2 Start-Up through VIN2 Shutdown through VIN2 5V e-fuse, 2A load 5V e-fuse, 2A load CH1: VOUT2 CH1: VOUT2 CH2: VIN2 CH2: VIN2 CH3: VIMON2 CH3: VIMON2 CH4: IOUT2 CH4: IOUT2 MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 11 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. Start-Up through EN Shutdown through EN 12V e-fuse, no load 12V e-fuse, no load CH1: VOUT1 CH1: VOUT1 CH2: VEN CH2: VEN CH3: VIMON1 CH3: VMON1 CH4: IOUT1 CH4: IOUT1 Start-Up through EN Shutdown through EN 12V e-fuse, 3A load 12V e-fuse, 3A load CH1: VOUT1 CH1: VOUT1 CH2: VEN CH2: VEN CH3: VIMON1 CH3: VIMON1 CH4: IOUT1 CH4: IOUT1 Start-Up through EN Shutdown through EN 5V e-fuse, no load 5V e-fuse, no load CH1: VOUT2 CH1: VOUT2 CH2: VEN CH2: VEN CH3: VIMON2 CH3: VIMON2 CH4: IOUT2 CH4: IOUT2 MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 12 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. Start-Up through EN Shutdown through EN 5V e-fuse, 2A load 5V e-fuse, 2A load CH1: VOUT2 CH1: VOUT2 CH2: VEN CH2: VEN CH3: VIMON2 CH3: VIMON2 CH4: IOUT2 CH4: IOUT2 Current Limit Current Limit 12V e-fuse, IOUT increases slowly 5V e-fuse, IOUT increases slowly CH1: VOUT1 CH1: VOUT2 CH2: VEN CH2: VEN CH3: VIMON1 CH3: VIMON2 CH4: IOUT1 CH4: IOUT2 SCP Entry SCP Entry 12V e-fuse 5V e-fuse CH1: VOUT1 CH1: VOUT2 CH2: VEN CH2: VEN CH3: VIMON1 CH3: VIMON2 CH4: IOUT1 CH4: IOUT2 MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 13 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN1 = 12V, VIN2 = 5V, TA = 25°C, unless otherwise noted. SCP Recovery SCP Recovery 12V e-fuse 5V e-fuse CH1: VOUT1 CH1: VOUT2 CH2: VEN CH2: VEN CH3: VIMON1 CH3: VIMON2 CH4: IOUT1 CH4: IOUT2 Output OVP Output OVP 12V e-fuse, VIN1 = 12V to 18V 5V e-fuse, VIN2 = 5V to 7V CH1: VOUT1 CH2: VIN1 CH1: VOUT2 CH2: VIN2 CH3: VMON1 CH3: VMON2 CH4: IOUT1 CH4: IOUT2 MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 14 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING FUNCTIONAL BLOCK DIAGRAM VIN1 Charge Pump LDO 1 Current Sense VDD1 VOUT1 Soft-Start Control Fast-Off Comparator Current-Limit Amplifier ISS1 IOCP_CH1 ISCP_CH1 SS1 VOUT1 VUVLO_CH1 EN VOUT2 IMON1 Control Block VUVLO_CH2 IMON2 tSENSE tOTP ISCP_CH2 IOCP_CH2 ReverseBlocking Control SS2 ISS2 Current-Limit Amplifier Fast-Off Comparator Soft-Start Control VOUT2 VDD2 LDO 2 Charge Pump GND Current Sense ReverseBlocking FET VIN2 Figure 1: Functional Block Diagram MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 15 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING OPERATION The MP5098 is a 12V/5V, dual-channel e-fuse with current limiting. It is designed to limit the inrush current to the load while a circuit card is inserted into a live backplane power source. This limits the backplane’s voltage drop and the dV/dt to the load. The MP5098 offers an integrated solution that can monitor the input voltage (VIN), output voltage (VOUT), output current (IOUT), and die temperature. This eliminates the need for an external currentsense resistor, power MOSFET, and thermalsensing device. Under-Voltage Lockout (UVLO) Protection Channel 1 can be used in the 12V system, and channel 2 can be used in the 5V system. High energy transients can occur during normal operation or hot swap. These transients are determined by the wire’s parasitic inductance and resistance, as well as the VCC capacitor (CVCC). If a power-clamped TVS diode is not used, then the e-fuse should be able to withstand the transient voltage. The MP5098 integrates a high-voltage MOSFET and a highvoltage circuit at VCC to guarantee safe operation. If VIN drops below the under-voltage lockout (UVLO) threshold, then the output is disabled. Once VIN exceeds the UVLO threshold, the output is enabled. Soft Start (SS) Connect a capacitor to the SS pin to set the soft-start time (tSS). tSS is a function of the softstart capacitor (CSS). A constant-current source charges CSS, and the SS voltage (VSS) ramps up. VOUT ramps up at a similar slew rate to VSS. tSS can be calculated with Equation (1): t DV / DT (ms ) = 1V  C SS (nF ) ISS (1) Where tDV/DT is tSS between 0% and 100% of VOUT, and ISS is the soft-start current. Output Over-Voltage Protection (OVP) The MP5098 provides output over-voltage protection (OVP) to protect the downstream load from surge voltages at the input. An accurate, fast comparator monitors VOUT. If VOUT MP5098 Rev. 1.0 11/2/2021 exceeds the OVP threshold, then the gate voltage (VGATE) of the internal MOSFETs is pulled down. VGATE is regulated at a certain value to keep VOUT clamped at the OVP threshold. Fast loop response speed (typically 2µs) reduces the over-voltage (OV) overshoot. Over-Current Protection (OCP) If an over-current (OC) fault occurs (e.g. the load exceeds the current limit [ILIMIT_CHx] or a short occurs), then over-current protection (OCP) is triggered and the part enters constantcurrent mode. If the OC condition remains after 150µs, then the part enters hiccup mode and shuts down. After a 200ms off time (tOFF), the part starts up again. The MP5098 repeats this operation until the OC condition has been removed. Channel 1’s current limit (ILIMIT_CH1) is set at 4A internally, and its constant-current limit (ILIMIT_CC_CH1) is set at 2.5A. Channel 2’s current limit (ILIMIT_CH2) is set at 3A internally, and its constant-current limit (ILIMIT_CC_CH2) is set at 1.3A. Current Monitoring The MP5098 provides current monitoring for both channel 1 and channel 2. The IMONx pin generates a current proportional to channel 1 and channel 2’s load current (ILOAD_CHx). Connect a resistor to IMONx to generate the current monitor voltage (VIMONx). The effective VIMONx range is between 0V and 2.5V to guarantee that the sensing results are linear. VIMONx can be calculated with Equation (2): VIMONx(mV) = GIMONx x IOUT(A) x RIMONx(kΩ) + IOSSFET_CHx x RIMONx(kΩ) (2) Where GIMON_CHx is the current-sense gain, RIMON_CHx is the current-sense resistor, and IOFFSET_CHx is the current-sense offset. Short Circuit Protection (SCP) If the ILOAD_CHx increases rapidly due to a short circuit, the current may exceed ILIMIT_CHx before the control loop can respond. If the current reaches the secondary ILIMIIT level (8A), then short-circuit protection (SCP) is triggered and the fast turn-off circuit turn offs the MOSFET (see Figure 1 on page 15). This limits the peak current through the MOSFET to maintain VIN. The total short-circuit response time is less than MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 16 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING 1µs. Once the e-fuse turns off, the part starts up after a delay (200ms). If the short still remains, then VGATE is regulated to maintain the current at its ILIMIIT level, and the part enters hiccup mode after a 200ms off time (tOFF). The MP5098 repeats this operation until the short circuit has been removed. Enable EN is a digital control pin that enables and disabled the current-limit MOSFET. Pull EN low MP5098 Rev. 1.0 11/2/2021 or float EN to turn the current-limit MOSFET on; pull EN high to turn it off. An internal 770kΩ resistor connected between EN and GND allows EN to float to start up the device. Thermal Shutdown Thermal shutdown monitors the silicon die temperature to prevent the chip from operating at exceedingly high temperatures. If the temperature exceeds 155°C, then the part shuts down. MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 17 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING APPLICATION INFORMATION Setting the Soft-Start Time (tSS) The soft-start time (tSS) is a function of the softstart capacitor (CSS). tSS can be calculated with Equation (3): t DV / DT (ms ) = 1V  C SS (nF ) ISS (3) Where tDV/DT is tSS between 0% and 100% of VOUT. Design Example Table 1 shows a design example following the application guidelines for the specifications. Table 1: Design Example VIN1 VOUT1 VIN2 VOUT2 12V 12V 5V 5V Figure 3 on page 19 shows the detailed application schematic. The typical performance and waveforms are shown in the Typical Characteristics section on page 7 and the Typical Performance Characteristics section on page 10. For more device applications, refer to the related evaluation board datasheet. PCB Layout Guidelines Efficient PCB layout is critical for stable operation. For best results, refer to Figure 2 and follow the guidelines below: 1. Place the high-current paths (VIN and VOUT) close to the device using short, direct, and wide traces. 2. Place the input capacitors as close to the VIN and GND pins as possible. 3. To improve thermal performance, connect the VIN pad to the large VIN plane, and the VOUT pad to the large VOUT plane. 4. Place CSS as close to SS pin as possible. GND VOUT2 VOUT1 VIN1 VIN2 GND Figure 2: Recommended PCB Layout MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 18 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING TYPICAL APPLICATION CIRCUIT VIN1 = 10.8V to 13.2V VOUT1 = VIN1 VOUT1 VIN1 CIN1 10µF CSS1 100nF VIN2 = 4.5V to 5.5V COUT1 10µF SS1 VOUT2 = VIN2 COUT1 10µF MP5098 CIN2 10µF CSS2 100nF VOUT2 VIN2 SS2 IMON1 R1 20k ON OFF EN IMON2 R2 20k GND Figure 3: Typical Application Circuit MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 19 PACKAGE OUTLINE DRAWING FOR 10L FCTQFN (2X3MM) MP5098MF-PO-D-0462 – 12V/5V, DUAL-CHANNEL E-FUSE revision 2.0WITH CURRENT MONITORING PACKAGE INFORMATION TQFN-10 (2mmx3mm) PIN 1 ID MARKING PIN 1 ID 0.10X45º TYP PIN 1 ID INDEX AREA BOTTOM VIEW TOP VIEW SIDE VIEW 0.10X45º NOTE: 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) LEAD COPLANARITIES SHALL BE 0.08 MILLIMETERS MAX. 3) JEDEC REFERENCE IS MO-220. 4) DRAWING IS NOT TO SCALE. RECOMMENDED LAND PATTERN MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 20 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING CARRIER INFORMATION Pin1 1 1 ABCD 1 1 ABCD ABCD ABCD Feed Direction Part Number MP5098GDT-Z MP5098 Rev. 1.0 11/2/2021 Package Description TQFN-10 (2mmx3mm) Quantity/ Reel Quantity/ Tube Quantity/ Tray Reel Diameter 5000 N/A N/A 13in Carrier Carrier Tape Width Tape Pitch 12mm MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 8mm 21 MP5098 – 12V/5V, DUAL-CHANNEL E-FUSE WITH CURRENT MONITORING REVISION HISTORY Revision # Revision Date 1.0 11/02/2021 Description Pages Updated Initial Release - Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP5098 Rev. 1.0 11/2/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 22