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LM43601: Inverting configuration not regulating above 150mA

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Part Number:LM43601

Requirements +5Vin, -15Vout @ 0.3A

Circuit designed from Webench using these specs. When prototyped, it does not regulate well above 150mA. Even at this modest load, inductor gets hot but -15V is present. Above 150mA, regulation is lost and droops to around -8V. Also this regulator would not start up into a very light load (20mA) without a 22n capacitor connected to the SS pin.


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