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N-CHANNEL 24V - 0.011 - 50A DPAK STripFETTM III POWER MOSFET
TYPE STB50NH02L
s s s s s s s
STB50NH02L
VDSS 24 V
RDS(on) < 0.0135
ID 50 A
TYPICAL RDS(on) = 0.011 @ 10 V TYPICAL RDS(on) = 0.015 @ 5 V RDS(ON) * Qg INDUSTRY's BENCHMARK CONDUCTION LOSSES REDUCED SWITCHING LOSSES REDUCED LOW THRESHOLD DEVICE SURFACE-MOUNTING D2PAK (TO-263) POWER PACKAGE IN TUBE (NO SUFFIX) OR IN TAPE & REEL (SUFFIX "T4")
3 1
DPAK TO-263 (Suffix "T4")
DESCRIPTION
The STB50NH02L utilizes the latest advanced design rules of ST's proprietary STripFETTM technology. This is suitable fot the most demanding DC-DC converter applications where high efficiency is to be achieved.
INTERNAL SCHEMATIC DIAGRAM
APPLICATIONS s SPECIFICALLY DESIGNED AND OPTIMISED FOR HIGH EFFICIENCY DC/DC CONVERTERS
ABSOLUTE MAXIMUM RATINGS
Symbol Vspike(1) VDS VDGR VGS ID ID IDM(2) Ptot EAS (3) Tstg Tj Parameter Drain-source Voltage Rating Drain-source Voltage (VGS = 0) Drain-gate Voltage (RGS = 20 k) Gate- source Voltage Drain Current (continuous) at TC = 25C Drain Current (continuous) at TC = 100C Drain Current (pulsed) Total Dissipation at TC = 25C Derating Factor Single Pulse Avalanche Energy Storage Temperature Max. Operating Junction Temperature Value 30 24 24 20 50 36 200 60 0.4 200 -55 to 175 Unit V V V V A A A W W/C mJ C
September 2003
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THERMAL DATA
Rthj-case Rthj-amb Tl Thermal Resistance Junction-case Thermal Resistance Junction-ambient Maximum Lead Temperature For Soldering Purpose Max Max 2.5 62.5 300 C/W C/W C
ELECTRICAL CHARACTERISTICS (TCASE = 25 C UNLESS OTHERWISE SPECIFIED) OFF
Symbol V(BR)DSS IDSS IGSS Parameter Drain-source Breakdown Voltage Zero Gate Voltage Drain Current (VGS = 0) Gate-body Leakage Current (VDS = 0) Test Conditions ID = 25 mA, VGS = 0 VDS = 20 V VDS = 20 V VGS = 20 V Min. 24 1 10 100 Typ. Max. Unit V A A nA
TC = 125C
ON (4)
Symbol VGS(th) RDS(on) Parameter Gate Threshold Voltage Static Drain-source On Resistance Test Conditions VDS = VGS VGS = 10 V VGS = 5 V ID = 250 A ID = 25 A ID = 12.5 A Min. 1 Typ. 1.8 0.011 0.015 0.0135 0.025 Max. Unit V
DYNAMIC
Symbol gfs (4) Ciss Coss Crss RG Parameter Forward Transconductance Input Capacitance Output Capacitance Reverse Transfer Capacitance Gate Input Resistance Test Conditions VDS = 10 V ID = 19 A Min. Typ. 19 1070 305 45 1 Max. Unit S pF pF pF
VDS = 15V f = 1 MHz VGS = 0
f=1 MHz Gate DC Bias=0 Test Signal Level =20 mV Open Drain
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ELECTRICAL CHARACTERISTICS (continued) SWITCHING ON
Symbol td(on) tr Qg Qgs Qgd Qoss (5) Parameter Turn-on Delay Time Rise Time Total Gate Charge Gate-Source Charge Gate-Drain Charge Output Charge Test Conditions ID =25 A VDD = 10 V RG = 4.7 VGS = 4.5 V (Resistive Load, Figure 3) 0.44 VDD 10 V ID=50 A VGS=10 V VDS= 16 V VGS= 0 V Min. Typ. 7 62 18 4 2.5 6.5 24 Max. Unit ns ns nC nC nC nC
SWITCHING OFF
Symbol td(off) tf Parameter Turn-off Delay Time Fall Time Test Conditions ID = 25 A VDD = 10 V RG = 4.7, VGS = 10 V (Resistive Load, Figure 3) Min. Typ. 25 12 Max. 16 Unit ns ns
SOURCE DRAIN DIODE
Symbol ISD ISDM VSD (4) trr Qrr IRRM Parameter Source-drain Current Source-drain Current (pulsed) Forward On Voltage Reverse Recovery Time Reverse Recovery Charge Reverse Recovery Current ISD = 25 A VGS = 0 27 22 1.6 Test Conditions Min. Typ. Max. 50 200 1.3 Unit A A V ns nC A
di/dt = 100A/s ISD = 50 A VDD = 18 V Tj = 150C (see test circuit, Figure 5)
(1) Garanted when external Rg=4.7 and tf < tfmax. (2) Pulse width limited by safe operating area (3) Starting Tj = 25 oC, ID = 25A, VDD = 18V
(4) Pulsed: Pulse duration = 300 s, duty cycle 1.5 %. (5) Qoss = Coss* Vin , Coss = Cgd + Cds . See Appendix A
Safe Operating Area
Thermal Impedance
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Output Characteristics Transfer Characteristics
Transconductance
Static Drain-source On Resistance
Gate Charge vs Gate-source Voltage
Capacitance Variations
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Normalized Gate Threshold Voltage vs Temperature Normalized on Resistance vs Temperature
Source-drain Diode Forward Characteristics
Normalized Breakdown Voltage vs Temperature
.
.
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Fig. 1: Unclamped Inductive Load Test Circuit Fig. 2: Unclamped Inductive Waveform
Fig. 3: Switching Times Test Circuits For Resistive Load
Fig. 4: Gate Charge test Circuit
Fig. 5: Test Circuit For Inductive Load Switching And Diode Recovery Times
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STB50NH02L D2PAK MECHANICAL DATA
DIM. A A1 A2 B B2 C C2 D D1 E E1 G L L2 L3 M R V2 0 4.88 15 1.27 1.4 2.4 0.4 4 0 10 8.5 5.28 15.85 1.4 1.75 3.2 0.192 0.591 0.050 0.055 0.094 0.015 4 mm. MIN. 4.4 2.49 0.03 0.7 1.14 0.45 1.21 8.95 8 10.4 0.394 0.334 0.208 0.624 0.055 0.069 0.126 TYP. MAX. 4.6 2.69 0.23 0.93 1.7 0.6 1.36 9.35 MIN. 0.173 0.098 0.001 0.028 0.045 0.018 0.048 0.352 0.315 0.409 inch. TYP. TYP. 0.181
0.106
0.009 0.037 0.067 0.024 0.054 0.368
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D2PAK FOOTPRINT
TUBE SHIPMENT (no suffix)*
TAPE AND REEL SHIPMENT (suffix "T4")*
REEL MECHANICAL DATA
DIM. A B C D G N T 1.5 12.8 20.2 24.4 100 30.4 BASE QTY 1000 26.4 13.2 mm MIN. MAX. 330 0.059 0.504 0.795 0.960 3.937 1.197 BULK QTY 1000 1.039 0.520 MIN. inch MAX. 12.992
TAPE MECHANICAL DATA
DIM. A0 B0 D D1 E F K0 P0 P1 P2 R T W mm MIN. 10.5 15.7 1.5 1.59 1.65 11.4 4.8 3.9 11.9 1.9 50 0.25 23.7 0.35 24.3 MAX. 10.7 15.9 1.6 1.61 1.85 11.6 5.0 4.1 12.1 2.1 MIN. 0.413 0.618 0.059 0.062 0.065 0.449 0.189 0.153 0.468 0075 1.574 .0.0098 0.933 0.0137 0.956 inch MAX. 0.421 0.626 0.063 0.063 0.073 0.456 0.197 0.161 0.476 0.082
* on sales type
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APPENDIX A Buck Converter: Power Losses Estimation
SW1
SW2
The power losses associated with the FETs in a Synchronous Buck converter can be estimated using the equations shown in the table below. The formulas give a good approximation, for the sake of performan comparison, of how different pairs of devices ce affect the converter efficiency. However a very important parameter, the working temperature, is not considered. The real device behavior is really dependent on how the heat generated inside the devices is emoved to allow for a safer working junction r temperature. The low side (SW2) device requires: * * * * * Very low RDS(on) to reduce conduction losses Small Qgls to reduce the gate charge losses Small Coss to reduce losses due to output capacitance Small Qrr to reduce losses on SW1 during its turn-on The Cgd/Cgs ratio lower than Vth/Vgg ratio especially with low drain to source voltage to avoid the cross conduction phenomenon;
The high side (SW1) device requires: * Small Rg and Ls to allow higher gate current peak an to limit the voltage d feedback on the gate * Small Qg to have a faster commutation and to reduce gate charge losses * Low RDS(on) to reduce the conduction losses.
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High Side Switch (SW1)
Low Side Switch (SW2)
Pconduction
R DS(on)SW1 * I 2 * d L
R DS(on)SW2 * I 2 * (1 - d ) L
Pswitching
Vin * (Q gsth(SW1) + Q gd(SW1) ) * f *
IL Ig
Zero Voltage Switching
Pdiode
Recovery
Not Applicable
1
Vin * Q rr(SW2) * f
Conduction
Not Applicable
Vf(SW2) * I L * t deadtime * f Q gls(SW2) * Vgg * f
Pgate(Q G )
Q g(SW1) * Vgg * f
PQoss
Vin * Q oss(SW1) * f 2
Vin * Q oss(SW2) * f 2
Parameter d Qgsth Qgls Pconduction Pswitching Pdiode Pgate PQoss
Meaning Duty-cycle Post threshold gate charge Third quadrant gate charge On state losses On-off transition losses Conduction and reverse recovery diode losses Gate drive losses Output capacitance losses
1
Dissipated by SW1 during turn-on
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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is registered trademark of STMicroelectronics (R) 2003 STMicroelectronics - All Rights Reserved All other names are the property of their respective owners. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com
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