Datasheet MAX22700D, MAX22700E, MAX22701D, MAX22701E, MAX22702D, MAX22702E (Maxim) - 7
| 制造商 | Maxim |
| 描述 | Ultra-High CMTI Isolated Gate Drivers |
| 页数 / 页 | 30 / 7 — Safety Limits. THERMAL DERATING CURVE. FOR SAFETY POWER LIMITING. FOR … |
| 文件格式/大小 | PDF / 1.2 Mb |
| 文件语言 | 英语 |
Safety Limits. THERMAL DERATING CURVE. FOR SAFETY POWER LIMITING. FOR SAFETY CURRENT LIMITING
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Safety Limits
determine the junction temperature. Thermal imped- Damage to the IC can result in a low-resistance path ance values (θJA and θJC) are available in the Package to ground or to the supply and, without current limiting, Information section of the data sheet and power dissipa- the MAX22700–MAX22702 could dissipate excessive tion calculations are discussed in the Calculating Power amounts of power. Excessive power dissipation can dam- Dissipation section. Calculate the junction temperature age the die and result in damage to the isolation barrier, (TJ) as: potentially causing long-term reliability issues. Table 2 TJ = TA + (PD × θJA) shows the safety limits for the MAX22700–MAX22702. Figure 1 and Figure 2 show the thermal derating curve The maximum safety temperature (TS) for the device is for safety limiting the power and the current of the device. the +150°C maximum junction temperature specified in Ensure that the junction temperature does not exceed the Absolute Maximum Ratings. The power dissipation +150°C. (PD) and junction-to-ambient thermal impedance (θJA)
THERMAL DERATING CURVE THERMAL DERATING CURVE FOR SAFETY POWER LIMITING FOR SAFETY CURRENT LIMITING
1400 fig01 350 fig02 MULTILAYER BOARD MULTILAYER BOARD 1200 300 A) 1000 ) 250 IT (m W 800 IT (m 200 RENT LIM 600 ER LIM 150 400 SAFE CUR 100 SAFE POW 200 50 0 0 0 25 50 75 100 125 150 175 200 0 25 50 75 100 125 150 175 200 AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) Figure 1. Thermal Derating Curve for Safety Power Limiting Figure 2. Thermal Derating Curve for Safety Current Limiting
Table 2. Safety Limiting Values for the MAX22700–MAX22702 PARAMETER SYMBOL TEST CONDITIONS MAX UNIT
Safety Operating Current on TJ = 150°C, TA = 25°C, IN = Low, VDDB = 36V 32 mA B-Side Pins IOUT OUT = VDDB, OUT = Low during thermal shutdown VDDB = 20V 57 mA Safety Current on Any Pins (No Damage to Isolation Barrier) IS TJ = 150°C, TA = 25°C 300 mA Total Safety Power Dissipation PS TJ = 150°C, TA = 25°C 1173 mW Maximum Safety Temperature TS 150 °C www.maximintegrated.com Maxim Integrated │ 7
Safety Limits
determine the junction temperature. Thermal imped- Damage to the IC can result in a low-resistance path ance values (θJA and θJC) are available in the Package to ground or to the supply and, without current limiting, Information section of the data sheet and power dissipa- the MAX22700–MAX22702 could dissipate excessive tion calculations are discussed in the Calculating Power amounts of power. Excessive power dissipation can dam- Dissipation section. Calculate the junction temperature age the die and result in damage to the isolation barrier, (TJ) as: potentially causing long-term reliability issues. Table 2 TJ = TA + (PD × θJA) shows the safety limits for the MAX22700–MAX22702. Figure 1 and Figure 2 show the thermal derating curve The maximum safety temperature (TS) for the device is for safety limiting the power and the current of the device. the +150°C maximum junction temperature specified in Ensure that the junction temperature does not exceed the Absolute Maximum Ratings. The power dissipation +150°C. (PD) and junction-to-ambient thermal impedance (θJA)
THERMAL DERATING CURVE THERMAL DERATING CURVE FOR SAFETY POWER LIMITING FOR SAFETY CURRENT LIMITING
1400 fig01 350 fig02 MULTILAYER BOARD MULTILAYER BOARD 1200 300 A) 1000 ) 250 IT (m W 800 IT (m 200 RENT LIM 600 ER LIM 150 400 SAFE CUR 100 SAFE POW 200 50 0 0 0 25 50 75 100 125 150 175 200 0 25 50 75 100 125 150 175 200 AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) Figure 1. Thermal Derating Curve for Safety Power Limiting Figure 2. Thermal Derating Curve for Safety Current Limiting
Table 2. Safety Limiting Values for the MAX22700–MAX22702 PARAMETER SYMBOL TEST CONDITIONS MAX UNIT
Safety Operating Current on TJ = 150°C, TA = 25°C, IN = Low, VDDB = 36V 32 mA B-Side Pins IOUT OUT = VDDB, OUT = Low during thermal shutdown VDDB = 20V 57 mA Safety Current on Any Pins (No Damage to Isolation Barrier) IS TJ = 150°C, TA = 25°C 300 mA Total Safety Power Dissipation PS TJ = 150°C, TA = 25°C 1173 mW Maximum Safety Temperature TS 150 °C www.maximintegrated.com Maxim Integrated │ 7