IRDC3710-QFN International Rectifier, IRDC3710-QFN Datasheet
IRDC3710-QFN
Specifications of IRDC3710-QFN
Related parts for IRDC3710-QFN
IRDC3710-QFN Summary of contents
Page 1
... SupIRBuck TM USER GUIDE FOR IRDC3710-QFN EVALUATION BOARD DESCRIPTION The IR3710M is a single phase sync-buck PWM controller IC optimized for efficiency in high performance portable electronics. The switching modulator uses constant ON-time control. Constant ON-time emulation provides the highest light load efficiency required for all applications. ...
Page 2
... VOUT+ and VOUT-. The connection diagram is shown in Fig. 1 and inputs and outputs of the board are listed in Table I. IRDC3710-QFN has three input connectors, one for gate drive supply (PVcc),one for biasing (Vcc) and the third one as input voltage (Vin). Separate supplies should be applied to these inputs. PVcc input should be a well regulated 4 ...
Page 3
... Enable PGood Vcc = +3.3V PVcc = +5.0V GROUND Figure 1: Connection diagram of IRDC3710-QFN evaluation Vin +12V in board IRDC3710-QFN V out +1.1V out 3 ...
Page 4
... Figure 2: PCB layout, top layer Figure 3: PCB layout, bottom layer IRDC3710-QFN 4 ...
Page 5
... Figure 4: Board layout, mid-layer I Figure 5: Board layout, mid-layer II IRDC3710-QFN 5 ...
Page 6
... IRDC3710-QFN 6 ...
Page 7
... Thick-film,0603,1/10 W,1% 1.96K Thick-film,0603,1/10W,1% 0 Thick-film,0603,1/10 W,5% N/S 1.65K Thick-film,0603,1/10W,1% Switch, 2-Pos. Switch, DIP, 2-Pos., SPDT IR3710, IR3710MPbF Controller,PQFN,3x3mm IRDC3710-QFN Manufacturer1 Manufacturer Part Number Murata Electronics GRM188R61E105KA12D North America Murata Electronics GRM185R60J225KE26D North America Taiyo Yuden TMK212BJ105KG-T Taiyo-Yuden TMK325BJ106MN-T Panasonic EEE-FK1E331P ...
Page 8
... Ch3-CPO(2V/Div) Figure 7: Charge Pump Off at Iout = 0.5A Ch1-Phase Voltage (10V/Div) Figure 9: Load Step (5A to 15A) Transient at 12Vin Ch2-Vout(50mV/div) Time: 10uS/Div) Ch2-Vout(50mV/Div) IRDC3710-QFN Ch1-Phase Voltage(10V/Div) Ch2-Vout(50mV/div) Ch3-CPO(2V/Div) Time: 2uS/Div) Figure 8: Charge Pump On at Iout =5A Ch1-Phase Voltage (10V/Div) Figure 10: Load Step (5A to 15A) Transient at 19Vin ...
Page 9
... Vin=12V, PVcc=5.0V, Vcc=3.3V,Vo=1.1V, Io=0- 20A, Room Temperature, No Air Flow Ch1-Phase Voltage (10V/Div) Figure 11: DCM/CCM transition from 1. 12Vin Ch1-Phase Voltage (10V/Div) Ch3-EN(2V/Div) Figure 13: Startup/Shutdown 12Vin at 0.5A Ch2-Vout(50mV/Div) Ch1-Phase Voltage (10V/Div) Ch2-Vout(500mV/Div) Ch1-Phase Voltage (10V/Div) Ch4-PGood(2V/Div) Ch3-EN(2V/Div) IRDC3710-QFN Ch2-Vout(50mV/Div) Figure 12: DCM/CCM transition from 1. 19Vin Ch2-Vout(500mV/Div) Ch4-PGood(2V/Div) Figure 14: Startup/Shutdown 12Vin at 5.0A 9 ...
Page 10
... Figure 16: Typical Efficiency and Power Loss at Vin=8V and 19V Iout(A) Eff 12V Input CP ON Eff 12V input CP OFF Power Loss 12V Input CP ON Power Loss 12V Input CP OFF Eff 8V Input CP ON Iout(A) Power Loss 8V Input CP ON IRDC3710-QFN 5 4.5 4 3.5 3 2.5 2 1 ...
Page 11
... Vin=12V, PVcc=5.0V, Vcc=3.3V, Vo=1.1V, Io=0- 20A, , Room Temperature, No Air Flow 1.1060 1.1040 1.1020 1.1000 1.0980 1.0960 1.0940 1.0920 1.0900 0 Figure 17: Typical Output Voltage Regulation Q1: 73.2°C, Q2:83.2°C, IC-64.2°C,Inductor: 53.5°C, PCB: 53.3°C Figure 18:Thermal Image @12Vin, 20A, With CP On 12V Input 8V Input Iout(A) IRDC3710-QFN 19V Input ...
Page 12
... Vin=12V, PVcc=5.0V, Vcc=3.3V, Vo=1.1V, Io=0- 20A, , Room Temperature, No Air Flow Q1: 82.5°C, Q2:94.8°C, IC-69.7°C,Inductor: 58.1°C, PCB: 56.4°C Figure 19: Thermal Image @19Vin, 20A, With CP On Q1:83.2°C,Q2:91.2°C, IC-68.7°C, Inductor: 57.1°C, PCB: 55.9°C Figure 20: Thermal Image @12Vin, 20A, With CP Off IRDC3710-QFN 12 ...
Page 13
... PACKAGE INFORMATION IRDC3710-QFN 13 ...