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ZHCSLX4A October 2020 – December 2020 TPSM41615

PRODUCTION DATA

封裝選項

機械數據 (封裝 | 引腳)

MOV|69
- MPQF595

散熱焊盤機械數據 (封裝 | 引腳)

訂購信息

7.3.1 Setting the Output Voltage

The output voltage adjustment range of the TPSM41615 is 0.6 V to 7.1 V. Setting the output voltage requires first setting the internal reference voltage (V_REF). The internal reference voltage can be set from 0.6 V to 1.1 V using a resistor (R_VSEL) connected from VSEL (pin 28) to AGND (pin 19). Table 7-1 lists reference voltage selections and their corresponding setting resistors. If the required output voltage is the same as the reference voltage, connect the RS+ pin (pin 35) directly to VOUT to set the output voltage as shown in Figure 7-1. Output voltages greater than the reference voltage require an external voltage setting resistor (R_ADJ) between the RS+ pin and VOUT to set the output voltage as shown in Figure 7-2. The value for R_ADJ can be calculated using Equation 1 or simply selected from the recommended values given in Table 7-2. Additionally, Table 7-3 includes the recommended switching frequency (F_SW), the recommended Ramp resistor (R_RAMP), and the minimum output capacitance for several output voltage ranges.

Equation 1.

When setting the output voltage, selecting the highest reference voltage will result in the most accurate output voltage set point. The output voltage will be regulated at the connection point of RS+ or R_ADJ to VOUT. Making the connection near the load improves regulation at the load.

Table 7-1 Setting the Reference Voltage

V_REF (V)	0.6	0.7	0.75	0.8	0.85	0.9	0.95	1.0	1.05	1.1
R_VSEL Value (k?)⁽¹⁾	0	8.66	15.4	23.7	34.8	51.1	78.7	open	121	187

(1) Resistors with ≤ 1% tolerance are recommended.

Table 7-2 Setting the Output Voltage

V_OUT (V)	0.6 - 1.1	1.2	1.5	1.8	2.5	3.3	5.0	6.0	7.0
V_REF (V)⁽¹⁾	0.6 - 1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1
R_ADJ Value (?)⁽¹⁾	short	90.9	365	634	1270	2000	3570	4420	5360

(1) Selecting the highest reference voltage will result in the most accurate output voltage set point.

Figure 7-1 Setting the Output Voltage
(V_OUT = V_REF)

Figure 7-2 Setting the Output Voltage
(V_OUT > V_REF)

Table 7-3 Recommended F_SW, RAMP, and Required C_OUT

PV_IN = 5 V
V_OUT RANGE (V)		RECOMMENDED F_SW (kHz)⁽¹⁾	ALLOWABLE F_SW RANGE (KHZ)	R_RAMP (kΩ)	MINIMUM REQUIRED C_OUT (μF)⁽⁴⁾
MIN	MAX	RECOMMENDED F_SW (kHz)⁽¹⁾	ALLOWABLE F_SW RANGE (KHZ)	R_RAMP (kΩ)	MINIMUM CERAMIC⁽³⁾	ADDITIONAL REQUIRED CAPACITANCE⁽⁵⁾
0.6	< 0.8	400	300 - < 450	78.7	294⁽²⁾	610
		500	450 - < 550	187		490
		600	550 - < 700	187		300
		700	700 - 1000	78.7		280
0.8	< 1.0	400	300 - < 450	78.7	289⁽²⁾	600
		500	450 - < 850	78.7		420
		900	850 - 1000	78.7		240
1.0	< 1.2	500	400 - 1000	187	284⁽²⁾	190
1.2	< 1.5	500	400 - 1000	187	277⁽²⁾	100
1.5	< 1.8	500	400 - 1000	187	266⁽²⁾	90
1.8	< 2.5	500	400 - 1000	187	254⁽²⁾	85
2.5	3.3	500	400 - 1000	78.7	224⁽²⁾	65
PV_IN = 12 V
V_OUT RANGE (V)		RECOMMENDED F_SW (kHz)⁽¹⁾	ALLOWABLE F_SW RANGE (kHz)	R_RAMP (kΩ)	MINIMUM REQUIRED C_OUT (μF)⁽⁴⁾
MIN	MAX	RECOMMENDED F_SW (kHz)⁽¹⁾	ALLOWABLE F_SW RANGE (kHz)	R_RAMP (kΩ)	MINIMUM CERAMIC⁽³⁾	ADDITIONAL REQUIRED CAPACITANCE⁽⁵⁾
0.6	< 1.0	400	350 - < 450	78.7	294⁽²⁾	760
		500	450 - < 550	78.7		430
		600	550 - 750	78.7		250
1.0	< 1.2	400	350 - < 500	78.7	284⁽²⁾	760
		550	500 - < 600	78.7		430
		600	600 - 1000	78.7		250
1.2	< 1.8	400	350 - < 500	78.7	277⁽²⁾	760
		500	500 - < 600	121		185
		600	600 - 1000	121		100
1.8	< 2.5	400	350 - < 500	78.7	254⁽²⁾	600
		500	500 - < 600	187		430
		600	600 - < 850	187		250
		700	850 - 1000	78.7		90
2.5	< 3.3	500	450 - < 650	78.7	224⁽²⁾	450
		700	650 - < 950	187		80
		1000	950 - 1000	121		80
3.3	< 5.0	600	550 - 1000	187	191⁽²⁾	65
5.0	7.1	700	600 - 1000	187	134⁽²⁾	0

(1) The recommended F_SW is shown in bold text. Increasing the frequency can reduce the required output capacitance as well as reduce ripple, however it may also reduce efficiency.

(2) This value of minimum ceramic is the effective amount of 6x 47μF after taking into account DC bias and temperature derating.

(3) The minimum required ceramic output capacitance must account for DC bias and temperature derating.

(4) The Minimum Required output capacitance ensures start-up and stability. Additional output capacitance may be needed to meet transient response requirements.

(5) The Additional Required Capacitance can be either ceramic or low-ESR polymer type. The total required output capacitance must include at least the amount of ceramic type listed in the Minimum Ceramic column.