发明名称 |
Reference voltage generator, having a double slope temperature characteristic, for a voltage regulator of an automotive alternator |
摘要 |
A reference voltage generator having a dual slope temperature characteristic, for use in an automotive alternator voltage regulator, comprises a bandgap circuit (R1,R2,R3,R4) which generates a voltage (A) having a thermal drift coefficient of zero and a voltage (B) having a non-zero thermal drift coefficient. These voltages are applied to a voltage divider (R5,R6) and a voltage-follower type of circuit (OPA1). A unidirectional conduction amplifier circuit (OPA2) has an input terminal connected to an intermediate point (C) on the voltage divider. A second voltage divider (R7,R8) is connected between the output terminals of the voltage-follower circuit (D) and the amplifier circuit (E) . An intermediate node (F) of the second voltage divider is coupled to an output terminal (VREF) of the generator.
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申请公布号 |
US5703476(A) |
申请公布日期 |
1997.12.30 |
申请号 |
US19960674321 |
申请日期 |
1996.07.01 |
申请人 |
SGS-THOMSON MICROELECTRONICS, S.R.L. |
发明人 |
MERLO, MAURO;COCETTA, FRANCO;MARCHIOE, FABIO;GRASSO, MASSIMO;MURARI, BRUNO |
分类号 |
G05F1/46;G05F3/22;H02J7/14;(IPC1-7):G05F3/16 |
主分类号 |
G05F1/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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