PI3302-20-LGIZ

ZVS Regulators PI33xx-0x 8 – 36VIN ZVS Buck Regulator Family Product Description Features & Benefits The PI33xx is a family of high-efficiency, wide-input-range DC‑DC ZVS Buck regulators integrating controller, power switches and support components all within a high-density System‑in‑Package (SiP). The integration of a high-performance Zero-Voltage Switching (ZVS) topology, within the PI33xx series, increases pointof-load performance providing best-in-class power efficiency. The PI33xx requires only an external inductor and minimal capacitors to form a complete DC-DC switching-mode Buck Regulator. • High-efficiency ZVS Buck topology Device Output Voltage • Wide input voltage range of 8 – 36V • Very-fast transient response • High-accuracy pre-trimmed output voltage • User-adjustable soft start & tracking • Power-up into pre-biased load (select versions) • Parallel capable with single-wire current sharing IOUT Max • Input Over/Undervoltage Lockout (OVLO/UVLO) Set Range PI3301-01 3.3V 2.3 – 4.1V 15A • Output Overvoltage Protection (OVP) PI3301-00 3.3V 2.3 – 4.1V 10A • Overtemperature Protection (OTP) PI3302-00 5.0V 3.3 – 6.5V 10A • Fast and slow current limits PI3303-00 12V 6.5 – 13.0V 8A • –40 to 125°C operating range (TJ) PI3305-00 15V 10.0 – 16.0V 8A Applications The ZVS architecture also enables high-frequency operation while minimizing switching losses and maximizing efficiency. The high‑switching-frequency operation reduces the size of the external filtering components, improves power density, and enables very fast dynamic response to line and load transients. The PI33xx series sustains high switching frequency all the way up to the rated input voltage without sacrificing efficiency and, with its 20ns minimum on-time, supports large step‑down conversions up to 36VIN. ZVS Regulators Page 1 of 35 • High-Efficiency Systems • High-Voltage Battery Operation Package Information • 10 x 14 x 2.6mm LGA SiP Rev 3.4 07/2022 PI33xx-0x Contents Order Information 3 Absolute Maximum Ratings 3 Output Voltage Trim 28 Functional Block Diagram 4 Soft-Start Adjust and Tracking 29 Pin Description 5 Inductor Pairing 30 Package Pinout 6 Thermal De-Rating 30 PI3301-01-LGIZ (3.3VOUT ) Electrical Characteristics 7 Filter Considerations 30 PI3301-00-LGIZ (3.3VOUT ) Electrical Characteristics 10 Layout Guidelines 31 PI3302-00-LGIZ (5.0VOUT ) Electrical Characteristics 14 Recommended PCB Footprint and Stencil 32 PI3303-00-LGIZ (12.0VOUT ) Electrical Characteristics 18 Package Drawings 33 PI3305-00-LGIZ (15.0VOUT ) Electrical Characteristics 22 Revision History 34 Functional Description 26 Product Warranty 35 ENABLE (EN) 26 Remote Sensing 26 Switching Frequency Synchronization 26 Soft Start 26 Output Voltage Trim 26 Output Current Limit Protection 27 Input Undervoltage Lockout 27 Input Overvoltage Lockout 27 Output Overvoltage Protection 27 Overtemperature Protection 27 Pulse Skip Mode (PSM) 27 Variable Frequency Operation 27 Parallel Operation 27 ZVS Regulators Page 2 of 35 Application Description Rev 3.4 07/2022 28 PI33xx-0x Order Information Output Range IOUT Max Package Transport Media 2.3 – 4.1V 15A 10 x 14mm 123-pin LGA TRAY 3.3V 2.3 – 4.1V 10A 10 x 14mm 123-pin LGA TRAY 5.0V 3.3 – 6.5V 10A 10 x 14mm 123-pin LGA TRAY PI3303-00-LGIZ 12V 6.5 – 13.0V 8A 10 x 14mm 123-pin LGA TRAY PI3305-00-LGIZ 15V 10.0 – 16.0V 8A 10 x 14mm 123-pin LGA TRAY Part Number Set Range PI3301-01-LGIZ 3.3V PI3301-00-LGIZ PI3302-00-LGIZ Absolute Maximum Ratings Name Rating VIN –0.7 to 36V VS1 –0.7 to 36VDC SGND 100mA PWRGD, SYNCO, SYNCI, EN, EAO, ADJ, TRK, ADR1, ADR2, SCL, SDA –0.3 to 5.5V / 5mA VOUT, REM PI3301-xx-LGIZ –1.0 to 18V PI3302-00-LGIZ –1.5 to 21V PI3303-00-LGIZ –3.6 to 25V PI3305-00-LGIZ –4.5 to 25V Storage Temperature –65 to 150°C Operating Junction Temperature –40 to 125°C Soldering Temperature for 20 seconds 245°C ESD Rating 2kV HBM, 1kV CDM Notes: At 25°C ambient temperature. Stresses beyond these limits may cause permanent damage to the device. Operation at these conditions or conditions beyond those listed in the Electrical Specifications table is not guaranteed. All voltage nodes are referenced to PGND unless otherwise noted. Test conditions are per the specifications within the individual product electrical characteristics. ZVS Regulators Page 3 of 35 Rev 3.4 07/2022 PI33xx-0x Functional Block Diagram VIN VS1 VIN Q2 Q1 VOUT R4 REM Power Control R1 VCC + ZVS Control SYNCO SYNCI PWRGD EN PGND Memory Interface 0Ω Rev 3.4 07/2022 ADR1 ZVS Regulators Page 4 of 35 ADR0 SDA SCL SGND Simplified block diagram EAO ADJ 1V R2 TRK VOUT PI33xx-0x Pin Description Pin Name Number SGND Block 1 Signal Ground: Internal logic ground for EA, TRK, SYNCI, SYNCO, ADJ and I2C (options) communication returns. SGND and PGND are star connected within the regulator package. PGND Block 2 Power Ground: VIN and VOUT power returns. VIN Block 3 Input Voltage: and sense for UVLO, OVLO and feed-forward ramp. VOUT Block 5 Output Voltage: and sense for power switches and feed-forward ramp. VS1 Block 4 Switching Node: and ZVS sense for power switches. PWRGD A1 Power Good: High impedance when regulator is operating and VOUT is in regulation. Otherwise pulls to SGND. Also can be used for parallel timing management intended for lead regulator. EAO A2 Error Amp Output: External connection for additional compensation and current sharing. EN A3 Enable Input: Regulator enable control. Asserted high or left floating – regulator enabled; Asserted low, regulator output disabled. Polarity is programmable via I2C interface. REM A5 Remote Sense: High-side connection. Connect to output regulation point. ADJ B1 Adjust Input: An external resistor may be connected between ADJ pin and SGND or VOUT to trim the output voltage up or down. TRK C1 Soft-Start and Track Input: An external capacitor may be connected between TRK pin and SGND to decrease the rate of rise during soft start. NC A4 No Connect: Leave pins floating. VDR K3 VDR can only be used for ADR0 and ADR1 pull-up reference voltage. No other external loading is permitted SYNCO K4 Synchronization Output: Outputs a low signal for ½ of the minimum period for synchronization of other converters. SYNCI K5 Synchronization Input: Synchronize to the falling edge of external clock frequency. SYNCI is a high-impedance digital input node and should always be connected to SGND when not in use. SDA D1 Data Line: Connect to SGND for non-I2C applications. SCL E1 Clock Line: Connect to SGND for non-I2C applications. ADR1 H1 Tri-state Address: No connect for default address selection for I2C applications ADR0 G1 Tri-state Address: No connect for default address selection for I2C applications ZVS Regulators Page 5 of 35 Description Rev 3.4 07/2022 PI33xx-0x Package Pinout A D E G K PGD/ PWRGD ADJ TRK SDA SCL SGND ADR0 ADR1 SGND SGND EAO SGND SGND SGND SGND SGND SGND SGND SGND SGND EN SGND SGND SGND SGND SGND SGND SGND SGND VDR NC SGND SGND PGND PGND PGND PGND PGND SYNCO PGND PGND PGND PGND PGND SYNCI REM VOUT VOUT VOUT VOUT PGND PGND PGND PGND PGND PGND VOUT VOUT VOUT VOUT PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND VS1 VS1 VS1 VS1 VS1 VIN VIN VIN VIN VS1 VS1 VS1 VS1 VS1 VIN VIN VIN VIN VS1 VS1 VS1 VS1 VS1 VIN VIN VIN VIN PI34xx-00 Pin Block Name Group of pins SGND B2-4, C2-4, D2-3, E2-3, F1-3, G2-3, H2-3, J1-3, K1-2 PGND A8-10, B8-10, C8-10, D8-10, E4-10, F4-10, G4-10, H4-10, J4-10, K6-10 VIN G12-14, H12-14, J12-14, K12-14 VS1 A12-14, B12-14, C12-14, D12-14, E12-14 VOUT A6-7, B6-7, C6-7, D6-7 ZVS Regulators Page 6 of 35 Rev 3.4 07/2022 PI33xx-0x PI3301-01-LGIZ (3.3VOUT) Electrical Characteristics Unless otherwise specified: –40°C < TJ < 125°C, VIN = 24V, L1 = 155nH [a] Parameter Symbol Conditions Min Typ Max Unit 8 24 36 V Input Specifications Input Voltage VIN_DC [g] Input Current IIN_DC VIN = 24V, TC = 25°C, IOUT =15A Input Current At Output Short (fault condition duty cycle) IIN_Short 2.25 [b] 75 Disabled 2.0 Enabled (no load) 2.5 Input Quiescent Current IQ_VIN Input Voltage Slew Rate VIN_SR [b] VOUT_DC [b] VOUT_DC [c] [g] A mA mA 1 V / μs Output Specifications Output Voltage Total Regulation Output Voltage Trim Range Line Regulation ∆VOUT (∆VIN) At 25°C, 8V < VIN < 36V Load Regulation ∆VOUT (∆IOUT) At 25°C, 0.5A < IOUT < 15A Output Voltage Ripple VOUT_AC IOUT = 5A, COUT = 4 x 100μF, 20MHz BW Continuous Output Current Range IOUT_DC [e] [g] Current Limit IOUT_CL 3.25 3.30 3.36 V 2.3 3.3 4.1 V [d] 0.10 % 0.10 % 37.5 mVP-P 0 15 18.0 A A Protection VIN UVLO Start Threshold VUVLO_START 7.10 7.60 8.00 V VIN UVLO Stop Threshold VUVLO_STOP 6.80 7.25 7.60 V VIN UVLO Hysteresis VUVLO_HYS 0.35 V VIN OVLO Start Threshold VOVLO_START 36.1 37.6 V VIN OVLO Stop Threshold VOVLO_STOP 37.0 38.4 V VIN OVLO Hysteresis VOVLO_HYS 0.8 V VIN UVLO/OVLO Fault Delay Time tf_DLY VIN UVLO/OVLO Response Time tf Output Overvoltage Protection Number of the switching frequency cycles 128 Cycles 1% overdrive 500 ns VOVP Above VOUT 20 % Overtemperature Fault Threshold TOTP [b] Overtemperature Restart Hysteresis TOTP_HYS 130 135 30 [a] 140 °C °C All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33xx evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. [b] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. [c] Output current capability may be limited and other performance may vary from electrical characteristics when switching frequency or V OUT is modified. [d] Refer to Output Ripple plots. [e] Refer to Load Current vs. Ambient Temperature curves. [f] Refer to Switching Frequency vs. Load current curves. [g] Minimum 5V between V – V IN OUT must be maintained or a minimum load of 1mA required. ZVS Regulators Page 7 of 35 Rev 3.4 07/2022 PI33xx-0x PI3301-01-LGIZ (3.3VOUT) Electrical Characteristics (Cont.) Unless otherwise specified: –40°C < TJ < 125°C, VIN = 24V, L1 = 155nH [a] Parameter Symbol Conditions Min Typ Max Unit Timing Switching Frequency Fault Restart Delay fS [f] tFR_DLY 650 kHz 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI SYNCI Threshold VSYNCI Relative to set switching frequency [c] 50 110 2.5 % V Sync Out (SYNCO) SYNCO High VSYNCO_HI Source 1mA 4.5 V SYNCO Low VSYNCO_LO Sink 1mA SYNCO Rise Time tSYNCO_RT 20pF load 10 ns SYNCO Fall Time tSYNCO_FT 20pF load 10 ns 0.5 V Soft Start And Tracking TRK Active Input Range VTRK Internal reference tracking range 0 1.04 VTRK_MAX TRK Disable Threshold VTRK_OV 20 40 62 mV ITRK 70 50 25 μA Charge Current (Soft Start) Discharge Current (Fault) Soft-Start Time 1.2 V TRK Max Output Voltage ITRK_DIS tSS CTRK = 0µF V 6.8 mA 2.2 ms Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (floating, unfaulted) VEN_PU 2 V Enable Pull-Down Voltage (floating, faulted) VEN_PD 0 V Source Current IEN_SO –50 μA Sink Current IEN_SK 50 μA [a] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33xx evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. [b] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. [c] Output current capability may be limited and other performance may vary from electrical characteristics when switching frequency or V OUT is modified. [d] Refer to Output Ripple plots. [e] Refer to Load Current vs. Ambient Temperature curves. [f] Refer to Switching Frequency vs. Load current curves. [g] Minimum 5V between V – V IN OUT must be maintained or a minimum load of 1mA required. ZVS Regulators Page 8 of 35 Rev 3.4 07/2022 PI33xx-0x PI3301-01-LGIZ (3.3VOUT) Electrical Characteristics (Cont.) 100 Efficiency (%) 95 90 85 80 75 70 65 60 55 50 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Load Current (A) VIN = 8V VIN = 12V VIN = 24V VIN = 36V Figure 1 — Efficiency at 25°C Figure 4 — Transient response 7.5A to 15A, at 5A/µs 24VIN to 3.3VOUT, COUT = 8 x 100µF ceramic Figure 2 — Short circuit test Figure 5 — Output ripple 24VIN, 3.3VOUT at 15A COUT = 8 x 100µF ceramic 800 Frequency (kHz) 700 600 500 400 300 200 100 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Load Current (A) VIN = 8V VIN = 12V VIN = 24V Figure 3 — Switching frequency vs. load current ZVS Regulators Page 9 of 35 VIN = 36V Figure 6 — Output ripple 24VIN, 3.3VOUT at 7.5A COUT = 8 x 100µF ceramic Rev 3.4 07/2022 PI33xx-0x PI3301-00-LGIZ (3.3VOUT) Electrical Characteristics Unless otherwise specified: –40°C < TJ < 125°C, VIN = 24V, L1 = 200nH [a] Parameter Symbol Conditions Min Typ Max Unit 8 24 36 V Input Specifications Input Voltage VIN_DC [g] Input Current IIN_DC VIN = 24V, TC = 25°C, IOUT =10A Input Current at Output Short (Fault Condition Duty Cycle) IIN_Short 1.49 [b] A 20 mA Disabled 2.0 mA Enabled (no load) 2.5 mA Input Quiescent Current IQ_VIN Input Voltage Slew Rate VIN_SR [b] VOUT_DC [b] VOUT_DC [c] [g] 1 V/μs Output Specifications Output Voltage Total Regulation Output Voltage Trim Range Line Regulation ∆VOUT (∆VIN) At 25°C, 8V < VIN < 36V Load Regulation ∆VOUT (∆IOUT) At 25°C, 0.5A < IOUT < 10A Output Voltage Ripple VOUT_AC IOUT = 5A, COUT = 4 x 100μF, 20MHz BW Continuous Output Current Range IOUT_DC [e] Current Limit IOUT_CL 3.25 3.30 3.36 V 2.3 3.3 4.1 V [d] 0.10 % 0.10 % 37.5 mVP-P 10 12 A A Protection VIN UVLO Start Threshold VUVLO_START 7.10 7.60 8.00 V VIN UVLO Stop Threshold VUVLO_STOP 6.80 7.25 7.60 V VIN UVLO Hysteresis VUVLO_HYS 0.33 VIN OVLO Start Threshold VOVLO_START 36.1 VIN OVLO Stop Threshold VOVLO_STOP 37.0 VIN OVLO Hysteresis VOVLO_HYS VIN UVLO/OVLO Response Time tf Output Overvoltage Protection VOVP Overtemperature Fault Threshold TOTP Overtemperature Restart Hysteresis TOTP_HYS V V 38.4 V 0.77 V 1% overdrive 500 ns Above VOUT 20 % [a] 130 135 30 140 °C °C All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33xx evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. [b] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. [c] Output current capability may be limited and other performance may vary from electrical characteristics when switching frequency or V OUT is modified. [d] Refer to Output Ripple plots. [e] Refer to load current vs. ambient temperature curves. [f] Refer to switching frequency vs. load current curves. [g] Minimum 5V between V -V IN OUT must be maintained or a minimum load of 1mA required. ZVS Regulators Rev 3.4 Page 10 of 35 07/2022 PI33xx-0x PI3301-00-LGIZ (3.3VOUT) Electrical Characteristics (Cont.) Unless otherwise specified: –40°C < TJ < 125°C, VIN = 24V, L1 = 200nH [a] Parameter Symbol Conditions Min Typ Max Unit Timing Switching Frequency Fault Restart Delay fS [f] tFR_DLY 650 kHz 30 ms Sync In (SYNCI) Synchronization Frequency Range ∆fSYNCI SYNCI Threshold VSYNCI 2.5 V SYNCI Input Impedance ZSYNCI 100 kΩ Relative to set switching frequency [c] 50 110 % Sync Out (SYNCO) SYNCO High VSYNCO_HI Source 1mA 4.5 V SYNCO Low VSYNCO_LO Sink 1mA SYNCO Rise Time tSYNCO_RT 20pF load 10 ns SYNCO Fall Time tSYNCO_FT 20pF load 10 ns 0.5 V Soft Start And Tracking TRK Active Input Range VTRK Internal reference tracking range 0 TRK Max Output Voltage TRK Disable Threshold Charge Current (Soft-Start) Discharge Current (Fault) Soft-Start Time 1.04 1.2 V V VTRK_OV 20 40 62 mV ITRK 70 50 25 μA ITRK_DIS VTRK = 0.5V 6.8 mA tSS CTRK = 0µF 2.2 ms Enable High Threshold VEN_HI 0.9 1 1.1 V Low Threshold VEN_LO 0.7 0.8 0.9 V Threshold Hysteresis VEN_HYS 100 200 300 mV Enable Pull-Up Voltage (Floating) VEN_PU With positive logic EN polarity 2 V Enable Pull-Down Voltage (Floating) VEN_PD With negative logic EN polarity 0 V Source Current IEN_SO With positive logic EN polarity 50 μA Sink Current IEN_SK With negative logic EN polarity 50 μA [a] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33xx evaluation board with 3x4” dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value. [b] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control. [c] Output current capability may be limited and other performance may vary from electrical characteristics when switching frequency or V OUT is modified. [d] Refer to Output Ripple plots. [e] Refer to load current vs. ambient temperature curves. [f] Refer to switching frequency vs. load current curves. [g] Minimum 5V between V -V IN OUT must be maintained or a minimum load of 1mA required. ZVS Regulators Rev 3.4 Page 11 of 35 07/2022 PI33xx-0x PI3301-00-LGIZ (3.3VOUT) Electrical Characteristics (Cont.) 100 95 Efficiency 90 85 80 75 70 65 60 55 50 0 1 2 3 4 5 6 7 8 9 10 Load Curent (A) VIN = 12V VIN = 24V VIN = 36V Figure 7 — Efficiency at 25°C Figure 10 — Transient response 2A to 7A, at 5A/µs Figure 8 — Short circuit test Figure 11 — Output ripple 24VIN, 3.3VOUT at 10A 700 Frequency (kHz) 600 500 400 300 200 100 0 1 2 3 4 5 6 7 8 9 10 Load Curent (A) VIN = 12V VIN = 24V Figure 9 — Switching frequency vs. load current VIN = 36V Figure 12 — Output ripple 24VIN, 3.3VOUT at 5A ZVS Regulators Rev 3.4 Page 12 of 35 07/2022 PI33xx-0x PI3301-00-LGIZ (3.3VOUT) Electrical Characteristics (Cont.) 12 Load Current (A) 10 8 6 4 2 0 50 75 125 100 Ambient Temperature (°C) VIN = 8V VIN = 24V VIN = 36V Figure 13 — Load current vs. ambient temperature, 0LFM Load Current (A) 12 10 8 6 4 2 0 50 75 125 100 Ambient Temperature (°C) VIN = 8V VIN = 24V VIN = 36V Figure 14 — Load current vs. ambient temperature, 200LFM 12 Load Current (A) 10 8 6 4 2 0 50 75 125 100 Ambient Temperature (°C) VIN = 8V VIN = 24V VIN = 36V Figure 15 — Load current vs. ambient temperature, 400LFM ZVS Regulators Rev 3.4 Page 13 of 35 07/2022 PI33xx-0x PI3302-00-LGIZ (5.0VOUT) Electrical Characteristics Unless otherwise specified: –40°C < TJ < 125°C, VIN = 24V, L1 = 200nH [a] Parameter Symbol Conditions Min Typ Max Unit 8 24 36 V Input Specifications Input Voltage VIN_DC [g] Input Current IIN_DC VIN = 24V, TC = 25°C, IOUT =10A Input Current at Output Short (Fault Condition Duty Cycle) IIN_Short 2.23 [b] A 20 mA Disabled 2.0 mA Enabled (no load) 2.5 mA Input Quiescent Current IQ_VIN Input Voltage Slew Rate VIN_SR [b] VOUT_DC [b] VOUT_DC [c] [g] 1 V/μs 5.07 V 6.5 V Output Specifications Output Voltage Total Regulation Output Voltage Trim Range 4.93 5.00 3.3 Line Regulation ∆VOUT (∆VIN) At 25°C, 8V