R2J20602NP Integrated Driver – MOS FET (DrMOS) REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Description The R2J20602NP multi-chip module incorporates a high-side MOS FET, low-side MOS FET, and MOS-FET driver in a single QFN package. The on and off timing of the power MOS FET is optimized by the built-in driver, making this device suitable for large-current buck converters. The chip also incorporates a high-side bootstrap Schottky barrier diode (SBD), eliminating the need for an external SBD for this purpose. Integrating a driver and both high-side and low-side power MOS FETs, the new device is also compliant with the package standard “Integrated Driver – MOS FET (DrMOS)” proposed by Intel Corporation. Features • • • • • • • • • • • • Built-in power MOS FET suitable for applications with 12 V input and low output voltage Built-in driver circuit which matches the power MOS FET Built-in tri-state input function which can support a number of PWM controllers VIN operating-voltage range: 16 V max High-frequency operation (above 1 MHz) possible Large average output current (Max. 40 A) Achieve low power dissipation (About 4.4 W at 1 MHz, 25 A) Controllable driver: Remote on/off Built-in Schottky diode for bootstrapping Low-side drive voltage can be independently set Small package: QFN56 (8 mm × 8 mm × 0.95 mm) Terminal Pb-free Outline VCIN BOOT GH 1 VIN 14 15 56 Driver Tab High-side MOS Tab Reg5V DISBL# VSWH MOS FET Driver Low-side MOS Tab PWM 43 CGND VLDRV GL PGND 28 42 29 (Bottom view) QFN56 package 8 mm × 8 mm REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 1 of 14 R2J20602NP Block Diagram VCIN Reg5V UVL BOOT GH Driver chip SBD 5 V Gen. DISBL# VIN 2 µA High-side MOS FET CGND Level shifter VSWH VCIN PWM Input logic (TTL level) (3 state in) Overlap protection Low-side MOS FET PGND CGND VLDRV Notes: 1. Truth table for the DISBL# pin. DISBL# Input “L” “Open” “H” Driver Chip Status Shutdown (GL, GH = “L”) Shutdown (GL, GH = “L”) Enable (GL, GH = “Active”) 2. Output signal from the UVL block "H" For activation UVL Output Logic Level For shutdown "L" VL REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 2 of 14 VH VCIN GL R2J20602NP VIN VIN VIN VIN VIN VIN VIN GH CGND BOOT VCIN VLDRV NC CGND Pin Arrangement 14 13 12 11 10 9 8 7 6 5 4 3 2 1 VIN 15 56 PWM VIN 16 55 DISBL# VIN 17 54 Reg5V VIN 18 53 NC VIN 19 52 GL VIN 20 51 CGND VSWH 21 50 VSWH PGND 22 49 VSWH PGND 23 48 VSWH PGND 24 47 VSWH PGND 25 46 VSWH PGND 26 45 VSWH PGND 27 44 VSWH PGND 28 43 VSWH CGND VIN 32 33 34 35 36 37 38 39 PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND 40 41 42 VSWH 31 VSWH 30 VSWH 29 PGND VSWH (Top view) Note: All die-pads (three pads in total) should be soldered to PCB. Pin Description Pin Name CGND NC VLDRV Pin No. 1, 6, 51, Tab 2, 53 3 Description Control signal ground No connect Low side gate supply voltage VCIN BOOT GH VIN VSWH 4 5 7 8 to 20, Tab 21, 40 to 50, Tab Control input voltage (+12 V input) Bootstrap voltage pin High side gate signal Input voltage Phase output/Switch output PGND GL Reg5V DISBL# PWM 22 to 39 52 54 55 56 Power ground Low side gate signal +5 V logic power supply output Signal disable PWM drive logic input REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 3 of 14 Remarks Should be connected to PGND externally For 5 V to 12 V gate drive voltage for Low side gate driver Driver Vcc input To be supplied +5 V through internal SBD Pin for Monitor Pin for Monitor Disabled when DISBL# is “L” R2J20602NP Absolute Maximum Ratings (Ta = 25°C) Item Power dissipation Symbol Pt(25) Pt(110) Iout VIN (DC) VIN (AC) VCIN (DC) VCIN (AC) VLDRV (DC) VLDRV (AC) VSWH (DC) VSWH (AC) VBOOT (DC) VBOOT (AC) Vdisble Vpwm Reg5V current Ireg5V Rating 25 8 40 –0.3 to +16 20 –0.3 to +16 20 –0.3 to +16 20 16 20 22 25 –0.3 to VCIN –0.3 to +5.5 –0.3 to +0.3 –10 to +0.1 Operating junction temperature Storage temperature Tj-opr Tstg –40 to +150 –55 to +150 Average output current Input voltage Supply voltage Low side driver voltage Switch node voltage BOOT voltage DISBL# voltage PWM voltage Notes: 1. 2. 3. 4. 5. 6. Units W W A V °C °C V V V V V V V mA Pt(25) represents a PCB temperature of 25°C, and Pt(110) represents 110°C. Rated voltages are relative to voltages on the CGND and PGND pins. For rated current, (+) indicates inflow to the chip and (–) indicates outflow. This rating is when UVL (Under Voltage Lock out) is ineffective (normal operation mode). This rating is when UVL (Under Voltage Lock out) is effective (lock out mode). The specification values indicated “AC” are limited within 100 ns. Safe Operating Area 45 Condition VOUT = 1.3 V VIN = 12 V VLDRV = 5 V VCIN = 12 V L = 0.45 µH fPWM = 1 MHz Average Output Current (A) 40 35 30 25 20 15 10 5 0 0 20 40 60 80 100 PCB Temperature (°C) REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 4 of 14 120 140 160 Note 1 1 2 2, 6 2 2, 6 2 2, 6 2 2, 6 2 2, 6 2 2, 4 2, 5 3 R2J20602NP Electrical Characteristics (Ta = 25°C, VCIN = 12 V, VLDRV = 5 V, VSWH = 0 V, unless otherwise specified) Supply PWM Input 5V Regulator DISBL# Input Note: Item VCIN start threshold VCIN shutdown threshold UVLO hysteresis VCIN bias current Symbol VH VL dUVL ICIN Min 7.0 6.6 — 10.5 Typ 7.4 7.0 0.4 *1 14.0 Max 7.8 7.4 — 18.5 Units V V V mA VLDRV bias current ILDRV 35.5 44.0 52.5 mA PWM rising threshold PWM falling threshold PWM input resistance VH-PWM VL-PWM RIN-PWM 3.7 0.9 12.5 4.0 1.2 25 4.3 1.5 37.5 V V kΩ VH – VL fPWM = 1 MHz, ton-PWM = 125 ns fPWM = 1 MHz, ton-PWM = 125 ns 4V–1V IPWM (VPWM = 4 V) – IPWM (VPWM = 1 V) Tri-state shutdown window Shutdown hold-off time Output voltage Line regulation VIN-SD tHOLD-OFF Vreg Vreg-line VL-PWM — 4.95 –10 — 240 *1 5.2 0 VH-PWM — 5.45 10 V ns V mV Load regulation Disable threshold Vreg-load VDISBL –10 0.9 0 1.2 10 1.5 mV V Enable threshold VENBL Input current IDISBL 1.9 0.5 2.4 2.0 2.9 5.0 V µA 1. Reference values for design. Not 100% tested in production. REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 5 of 14 Test Conditions VCIN = 12 V to 16 V Ireg = 0 to 10 mA DISBL# = 1 V R2J20602NP Typical Application +12 V +5 V to 12 V +12 V VCIN VLDRV BOOT DISBL# VIN VSWH Reg5V R2J20602NP PGND PWM CGND GH GL VCIN VLDRV BOOT DISBL# VIN Reg5V VSWH R2J20602NP PWM PWM1 PWM control circuit PGND CGND GH GL PWM2 +1.3 V PWM3 PWM4 VCIN VLDRV BOOT DISBL# VIN Reg5V VSWH R2J20602NP PWM PGND CGND GH GL VCIN VLDRV BOOT DISBL# VIN Reg5V VSWH R2J20602NP PGND PWM CGND REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 6 of 14 GH GL Signal Power GND GND R2J20602NP Test Circuit VB VLDRV VCIN A A A IIN ILDRV V VIN ICIN VCIN VLDRV BOOT DISBL# VIN Reg5V VSWH R2J20602NP 5 V pulse PGND PWM CGND GH Electric load IO GL Averaging Average Output Voltage V VO circuit Note: PIN = IIN × VIN + ILDRV × VLDRV + ICIN × VCIN POUT = IO × VO Efficiency = POUT / PIN PLOSS(DrMOS) = PIN – POUT Ta = 27°C REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 7 of 14 R2J20602NP Typical Data Power Loss vs. Input Voltage 1.3 VIN = 12 V VCIN = 12 V VLDRV = 5 V VOUT = 1.3 V fPWM = 1 MHz L = 0.45 µH 0 5 10 Normalized Power Loss @ VIN = 12 V Power Loss (W) Power Loss vs. Output Current 12 11 10 9 8 7 6 5 4 3 2 1 0 15 20 25 30 35 VCIN = 12 V VLDRV = 5 V VOUT = 1.3 V 1.2 fPWM = 1 MHz L = 0.45 µH Iout = 25 A 1.1 1.0 0.9 0.8 40 5 6 7 Output Current (A) Input Voltage (V) Power Loss vs. Switching Frequency Power Loss vs. Output Voltage 1.5 1.3 1.4 VIN = 12 V VCIN = 12 V VLDRV = 5 V fPWM = 1 MHz L = 0.45 µH Iout = 25 A VLDRV = 5 V 1.2 1.1 1.0 0.9 0.8 0.8 VIN = 12 V 1.3 VCIN = 12 V Normalized Power Loss @ fpwm = 1 MHz Normalized Power Loss @ VOUT = 1.3 V 1.4 9 10 11 12 13 14 15 16 8 1.2 VOUT = 1.3 V L = 0.45 µH 1.1 Iout = 25 A 1.0 0.9 0.8 0.7 0.6 1.6 2.4 3.2 4.0 Output Voltage Vout (V) REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 8 of 14 4.8 0.5 250 500 750 1000 1250 Switching Frequency (kHz) 1500 R2J20602NP Typical Data (cont.) Power Loss vs. Output Inductance Power Loss vs. VLDRV 1.20 1.6 1.15 1.5 VCIN = 12 V Normalized Power Loss @ VLDRV = 5 V Normalized Power Loss @ L = 0.45 µH VIN = 12 V 1.10 1.05 1.00 0.95 VIN = 12 V VCIN = 12 V 0.90 VLDRV = 5 V VOUT = 1.3 V 0.85 fPWM = 1 MHz Iout = 25 A VOUT = 1.3 V = 1 MHz f 1.4 LPWM = 0.45 µH Iout = 25 A 1.3 1.2 1.1 1.0 0.9 0.80 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0.8 5 6 7 8 Output Inductance (µH) VLDRV (V) Average ICIN vs. Switching Frequency 30 VIN = 12 V VCIN = 12 V VOUT = 1.3 V 200 L = 0.45 µH Iout = 0 A VIN = 12 V VCIN = 12 V 25 VOUT = 1.3 V L = 0.45 µH Iout = 0 A Average ICIN (mA) Average ILDRV (mA) Average ILDRV vs. Switching Frequency 250 150 100 50 0 250 VLDRV = 5 V VLDRV = 12 V VLDRV = 16 V 500 750 1000 1250 Switching Frequency (kHz) REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 9 of 14 9 10 11 12 13 14 15 16 1500 20 15 10 5 0 250 VLDRV = 5 V VLDRV = 12 V VLDRV = 16 V 500 750 1000 1250 Switching Frequency (kHz) 1500 R2J20602NP Description of Operation The DrMOS multi-chip module incorporates a high-side MOS FET, low-side MOS FET, and MOS-FET driver in a single QFN package. Since the parasitic inductance between each chip is extremely small, the module is highly suitable for use in buck converters to be operated at high frequencies. The control timing between the high-side MOS FET, low-side MOS FET, and driver is optimized so that high efficiency can be obtained at low output-voltage. Driver The driver has two types of power-supply voltage input pin, VCIN and VLDRV. VCIN supplies the operating voltage to the internal logic circuit. The low-side driving voltage is applied to VLDRV, so setting of the gate-driving voltage for the low-side MOS FET is independent of the voltage on VCIN. The VLDRV setting voltage is from 5 V to 16 V. The VCIN pin is connected to the UVL (under-voltage lockout) module, so that the driver is disabled as long as VCIN is 7.4 V or less. On cancellation of UVL, the driver remains enabled until the UVL input is driven to 7.0 V or less. The signal on pin DISBL# also enables or disables the circuit. When UVL disables the circuit, the built-in 5 V regulator does not operate, but when the signal on DISBL# disables the circuit, only output-pulse generation is terminated, and the 5 V regulator is not disabled. VCIN L H H H VLDRV >5V >5V >5V >5V DISBL# ∗ L H Open Reg5V 0 5V 5V 5V Driver State Disable (GL, GH = L) Disable (GL, GH = L) Active Disable (GL, GH = L) Voltages from –0.3 V to VCIN can be applied to the DISBL# pin, so on/off control by a logic IC or the use of a resistor, etc., to pull the DISBL# line up to VCIN are both possible. The built-in 5 V regulator is a series regulator with temperature compensation. The voltage output by this regulator determines the operating voltage of the internal logic and gate-voltage swing for the high-side MOS FET. A ceramic capacitor with a value of 0.1 µF or more must be connected between the CGND plane and the Reg5V pin. The PWM pin is the signal input pin for the driver chip. The input-voltage range is –0.3 V to (Reg5V + 3 V). When the PWM input is high, the gate of the high-side MOS FET (GH) is high and the gate of the low-side MOS FET (GL) is low. PWM L H GH L H GL H L REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 10 of 14 R2J20602NP The PWM input is TTL level and has hysteresis. When the PWM input signal is abnormal, e.g., when the signal route from the control IC is abnormal, the tri-state function turns off the high- and low-side MOS FETs. This function operates when the PWM input signal stays in the input hysteresis window for 240 ns (typ.). After the tri-state mode has been entered and GH and GL have become low, a PWM input voltage of 4.0 V or more is required to make the circuit return to normal operation. 240 ns(tHOLD-OFF) PWM 240 ns(tHOLD-OFF) 4.0 V 1.2 V GH GL 240 ns(tHOLD-OFF) PWM 240 ns(tHOLD-OFF) 4.0 V 1.2 V GH GL Figure 1 For the high-side driver, the BOOT pin is the power-supply voltage pin and voltage VSWH provides a standard for operation of the high-side driving circuit. Consequently, the difference between the voltage on the BOOT and VSWH pins becomes the gate swing for the high-side MOS FET. Connect a bootstrap capacitor between the BOOT pin and the VSWH pin. Since the Schottky barrier diode (SBD) is connected between the BOOT and Reg5V pins, this bootstrap capacitor is charged up to 5 V. When the high-side MOS FET is turned on, voltage VSWH becomes equal to VIN, so VBOOT is boosted to VSWH + 5 V. The GH and GL pins are the gate-monitor pins for each MOS FET. MOS FETs The MOS FETs incorporated in R2J20602NP are highly suitable for synchronous-rectification buck conversion. For the high-side MOS FET, the drain is connected to the VIN pin and the source is connected to the VSWH pin. For the low-side MOS FET, the drain is connected to the VSWH pin and the source is connected to the PGND pin. REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 11 of 14 R2J20602NP PCB Layout Example Figure 2 shows an example of a PCB layout for the R2J20602NP in application. The several ceramic capacitors (e.g. 10 µF) close to VIN and PGND can be expected to decrease switching noise and improve efficiency. In that case, all sections of the GND pattern must be connected with other PCB layers via low impedances. Moreover, the wide VSWH pattern can be expected to have the effect of dissipating heat from the low-side MOS FET. When R2J20602NP is mounted on small circuit boards, such as those for point-of-load (POL) applications, heating of the device can be alleviated by adding thermal via-holes under the VIN and VSWH pads. 10 µF Vin 10 µF 10 µF GND 10 µF GND BOOT 1 µF VCIN 1 µF VSWH Reg. 5 V VLDRV PWM 1 µF DISBL# GND 0.1 µF To inductor GND To BOOT Via hole Figure 2 R2J20602NP PCB Layout Example (Top View) REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 12 of 14 R2J20602NP Footprint Example (Unit: mm) 4.30 3.60 3.10 0.45 0.90 0.3 3.10 56 Figure 3 Footprint Example REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 13 of 14 4.30 3.60 3.10 0.5 0.85 0.50 3.10 1 R2J20602NP Package Dimensions JEITA Package Code P-HVQFN56-8x8-0.50 RENESAS Code PVQN0056KA-A Previous Code — MASS[Typ.] 0.2g HD D 42 29 29 43 28 28 3.0 0.0 E HE e 43 42 0.3 1.0 0. 4 Reference Symbol 14 1 56 14 ZD A1 A c1 c 3.0 Index mark 15 y REJ03G1480-0300 Rev.3.00 Jun 30, 2008 Page 14 of 14 1 b b1 3.0 15 0.0 0.4 1.0 56 ZE Lp C 3.0 Dimension in Millimeters Min Nom Max D 7.95 8.00 8.05 E 7.95 8.00 8.05 A2 A 0.95 A1 0.005 b 0.20 0.25 0.30 b1 0.23 e 0.50 Lp 0.40 0.50 0.60 x y 0.05 y1 t HD 8.10 8.20 8.30 HE 8.10 8.20 8.30 ZD 0.75 ZE 0.75 c 0.17 0.22 0.27 c1 0.20 Sales Strategic Planning Div. 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