SLVUC28 August 2022 TPS544C26

2 Performance Characteristics

Table 2-1 provides a summary of the TPS544C26EVM performance characteristics. The TPS544C26EVM is designed and tested for V_IN = 8 V to 16 V. Characteristics are given for an input voltage of V_IN = 12 V and output voltage of 1.1 V, unless otherwise specified. The ambient temperature is room temperature (20°C to 25°C) for all measurements, unless otherwise noted.

Table 2-1 TPS544C26EVM Performance Characteristics Summary

SPECIFICATION	TEST CONDITIONS	MIN	TYP	MAX	UNIT
V_IN voltage range		8	12	16	V
PVIN input current	PVIN = 12 V, internal VCC/VDRV, I_O = 0 A, Pulse-skip mode		15		mA
VCC/VDRV input current	External 5-V bias, f_SW = 800 kHz, PVIN = 12 V, I_O = 35 A		38		mA
Output voltage setpoint	Set by VBOOT in (C1h) TEMP_MAX bits <3:0>		1.1		V
Output current range	V_IN = 8 V to 16 V	0		35	A
Output ripple voltage	f_SW = 800 kHz, I_O = 35 A		12		mVPP
Output rise time	Set by (61h) TON_RISE		1		ms
Current limit	Set by (46h) IOUT_OC_FAULT_LIMIT		35		A
Switching frequency (f_SW)	Set by (33h) FREQUENCY_SWITCH	600	800	1200	kHz
Efficiency	V_IN = 12 V, external 5-V Bias, f_SW = 800 kHz, I_O = 35 A		87		%
IC case temperature	V_IN = 12 V, external 5-V bias, f_SW = 1.2 MHz, I_O = 35 A, 15-minute dwell time		101		°C

Figure 2-1 Efficiency, FCCM, Internal LDO

Figure 2-3 Efficiency, FCCM, External 5-V Bias

Figure 2-5 Efficiency, DCM. Internal LDO

Figure 2-7 Efficiency, DCM, External 5-V Bias

Figure 2-9 Load Regulation, FCCM, Internal LDO

Figure 2-11 Load Regulation, DCM, Internal VCC LDO

Figure 2-13 ENABLE Start-Up Waveform

Figure 2-15 Output Voltage Ripple, 600-kHz FCCM, 35-A Load

Figure 2-17 Output Voltage Ripple, FCCM, No Load

Figure 2-19 Output Voltage Ripple, DCM, 500-mA Load

Figure 2-21 Thermal Characteristics, 600-kHz FCCM, Internal LDO, 35-A Load

Figure 2-23 Thermal Characteristics, 800-kHz FCCM, Internal LDO, 35-A Load

Figure 2-25 Thermal Characteristics, 1.2-MHz FCCM, Internal LDO, 35-A Load

Figure 2-2 Power Dissipation, FCCM, Internal LDO

Figure 2-4 Power Dissipation, FCCM, External 5-V Bias

Figure 2-6 Power Dissipation, DCM, Internal LDO

Figure 2-8 Power Dissipation, DCM, External 5-V Bias

Figure 2-10 Load Regulation, FCCM, External 5-V Bias

Figure 2-12 Load Regulation, DCM, External 5-V Bias

Figure 2-14 ENABLE Shutdown Waveform

Figure 2-16 Output Voltage Ripple, 800-kHz FCCM, 35-A Load

Figure 2-18 Output Voltage Ripple, DCM, No Load

Figure 2-20 Output Voltage Ripple, DCM, 1-A Load

Figure 2-22 Thermal Characteristics, 600-kHz FCCM, External 5-V Bias, 35-A Load

Figure 2-24 Thermal Characteristics, 800-kHz FCCM, External 5-V Bias, 35-A Load

Figure 2-26 Thermal Characteristics, 1.2-MHz FCCM, External 5-V Bias, 35-A Load